9851 2558 01 Production Drilling1.pdf

Atlas Copco

Production Drilling in Underground Mining

Printed matter no. 9851 2558 01

Production Drilling in Underground Mining 2008

First edition 2008 www.atlascopco.com

We always take a hard view on costs

Working with Atlas Copco means working with highly productive rock drilling solutions. It also means sharing a common cost-cutting challenge. Like you, we are always looking for new and effective ways to squeeze your production costs – but never at the expense of quality, safety or the environment. Mining and construction is a tough and competitive business. Fortunately, our view on cutting costs is just as hard. Get your free copy of Success Stories at www.atlascopco.com/rock

Committed to your superior productivity. Atlas Copco Rock Drills AB Fax: +46 8 670 7393 www.atlascopco.com

Contents Foreword

Product specifications

    2 Foreword by Mikael Ramström,

  65 Modular program with maximum flexibility   67 Tophammer drill rig specifications   78 Hydraulic rock drill specifications   79 Tophammer drilling equipment 100 ITH drill rig specifications 104 ITH rotation units 105 ITH drilling equipment 107 Rod Handling System (RHS) 108 Hydraulic feeds 109 Drill rig options 110 Secoroc grinding 118 Rock drill specifications 119 Complementary equipment 124 Lubrication 125 Service workshops 126 Conversion table

Product Line Manager, Underground Drilling Equipment Atlas Copco Rock Drills AB

Talking technically    3 Percussive rock drilling    9 In-The-Hole (ITH) vs tophammer drilling in underground mining   13 Drilling long straight holes   19 Automated long hole drilling   27 Faster Simba rigs set the pace   33 Increased productivity with ITH drilling   37 Tuning up your drilling system   39 Computer based training for rock drilling tools   41 The economic case for routine bit grinding

Case studies   45 Exploring the potential of El Aguilar   47 Increasing drilling rates at Ridgeway   49 Sub level caving for chromite at Ferbasa   53 First Cabletec cable bolting rig in South America   55 Innovative mining at Garpenberg   61 Automated longhole drilling with Simba at LKAB

Front cover: Simba M7 C production drilling rig at the Garpenberg mine, Sweden.

Produced by Atlas Copco Rock Drills AB, SE-701 91 Örebro, Sweden, tel +46 19 670 70 00, fax 019-670 73 93. Publisher: Ulf Linder, [email protected] Production Manager: Anna Dahlman Herrgård, [email protected] Editor: Mike Smith, [email protected] Senior Adviser: Hans Fernberg, [email protected] Contributors: Alf Stenqvist, Björn Samuelsson, Bo Persson, Fredrik Öberg, Hans Fernberg, Leif Larsson, Patrik Ericsson, all [email protected]. Craig Griffiths, [email protected] Håkan Schunnesson, [email protected], Kyran Casteel, [email protected]. Digital copies of all Atlas Copco reference editions can be ordered from the publisher, address above, or online at www.atlascopco.com/rock. Reproduction of individual articles only by agreement with the publisher. Edited by Mike Smith, tunnelbuilder ltd, United Kingdom. Designed and typeset by ahrt, Örebro, Sweden. Printed by Prinfo Welins Tryckeri, Sweden. Legal notice © Copyright 2008, Atlas Copco Rock Drills AB, Örebro, Sweden. All product names in this publication are trademarks of Atlas Copco. Any unauthorized use or copying of the contents or any part thereof is prohibited. This applies in particular to trademarks, model denominations, part numbers and drawings. Information in this publication is provided “as is”. Atlas Copco Rock Drills AB disclaims any representation or warranties of any kind including without limitation warranties of merchantability or fitness for a particular purpose, non-infringement or content. In no event will Atlas Copco Rock Drills AB be liable to any party or any damages for any use of this publication. The contents, including illustrations and photos, in this publication may describe or show equipment with optional extras. It may also contain references to products or services that are not available in your country. This publication, as well as specifications and equipment, is subject to change without notice. Consult your Atlas Copco Customer Center for specific information.

Production Drilling in Underground Mining

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Foreword Welcome to our first reference edition focusing on production drilling. This book is derived from our series entitled Underground Mining Equipment following the recent dramatic growth in the importance and sophistication of production drilling. With the rise in demand for most minerals, mining companies are having to respond with rapid increases in safe production, both to satisfy their customers and to maximize profits after a prolonged period of price stagnation. Atlas Copco, as a world leader in the manufacture and supply of mining equipment, is meeting the challenge with the Simba series of highly efficient drill rigs to suit various underground production situations. These rigs incorporate the latest RCS computerization techniques and their modular design allows customers to specify the drill unit, feed length, rockdrill, and optional equipment to suit a variety of drill patterns. A whole range of compatible tophammer and Secoroc ITH equipment is available, including shanks, drill string and bits. We even produce the grinding equipment necessary to get the best out of each bit! The underground drilling environment is made safer thanks to our Boltec, Cabletec and Scaletec rigs, all of which are helping increase the utilization of our Simba rigs. Continuous innovation ensures that Simba rigs stay ahead, with drill bit changers, laser rig alignment and positioning units adding utilization, while computerized drill plans, strata logging and onboard communications systems fine tune drilling quality. As a result, Simba rigs can be equipped to drill continuously through meal breaks and shift changes, reporting every move to the office!

The trend to faster drilling is accompanied by higher productivity, while improved accuracy with less hole deviation means the hole bottom is closer to the preplanned coordinates, leading to better ore recovery and less waste dilution. For room-and-pillar and similar lateral mining techniques we produce a range of Boomer rigs, while for smaller operations where compressed air may be the only available power, we still produce our handheld pusher rock drills. When designing, manufacturing, selling and servicing Atlas Copco equipment, we rely on our long heritage to produce high-productivity machines that achieve the best return on customer investment. Our worldwide presence through offices in over 130 countries ensures that we are close to our customers, sharing their problems and understanding their methods and applications. Their inputs are crucial to our engineers, whose job is to continuously develop our products and systems in order to maintain our market leadership. In this book we describe our underground production drilling products, their applications, and their specifications. We hope this will stimulate technical interchange between underground miners, managers and consultants, universities, and our own sales and marketing organization, resulting in better communication and collaboration. Above all, we wish to make it easier for our customers to select the right equipment for their particular application, for more efficient production and a safer environment, so that we continue to be the supplier of first choice.

Mikael Ramström Product Line Manager Underground Drilling Equipment Atlas Copco Rock Drills AB [email protected]

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Percussive rock drilling A century of drilling and development

s

Over the last 100 years or so there have been rapid and impressive increases in efficiency and productivity in tophammer drilling. Technical development started from hitting a steel manually by a sledgehammer, through pneumatic handheld drills and rig-mounted multiple drills, to today’s highfrequency hydraulic drills with optional automatic control utilizing state-of-the-art technology to achieve top efficiency.

Principles In percussive tophammer drilling, energy is transmitted from the rock drill via the shank adapter, drill steel and drill bit to the rock, where it is used for crushing. A pneumatic or hydraulic rock drill generates the energy required to break the rock. A pressure is applied on drive area a or b (in Figure 2), which drives the impact piston forwards and backwards.

5200 m/s

+ –

2 x piston length

Figure 1: Stress level in shock wave.

The impact piston of a hydraulic rock drill strikes the shank adapter typically 50-60 times per second, a frequency of 50-60 Hz, although there are examples of rock drills with much higher frequency like the COP 3038, which operates at 102 Hz. The entire system of rock drill, drill steel, bit, and rock contact must harmonize for maximum drilling economy

Stress waves Theoretically, the stress wave has a rectangular shape, and a length of twice that of the piston. The stress amplitude depends on the speed of the piston at the moment of impact, and on the relationship between the cross-sectional area of the piston and that of the drill steel. It takes about 0.004 second for a stress

Figure 2: Principle of tophammer drilling.

machine housing impact piston

drive area a

shank adapter

damping piston

drive area b

drill rod coupling sleeve

drill bit rock

flushing hole rotation splines

Production Drilling in Underground Mining

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wave amplitude, is obtained with the long slender piston working at high pressure.

Piston 1 – 0,8 MPa

Efficiency and losses Piston 2 – 12 MPa

Piston 3 – 20 MPa

3 2 1 Shock-wave amplitude

Figure 3: Stress levels generated by different pistons of same weight.

wave to reach the rock using a 20 m long drill steel. The total stresses that the wave contains are indicated in Figure 1. To calculate the output power obtained s

Reflecting wave

+ –

Primary wave

Figure 4: Nature of drill string ‘recoil’ or reflecting wave.

from a rock drill, the wave energy content is multiplied by the impact frequency of the piston, and is usually stated in kilowatts (kW). Two rock drills having the same nominal power rating might have quite different properties. Rock drill design engineers seek to find the best combinations of various parameters, such as the piston geometry, the impact rate and the frequency for the application in mind. 4

The shock waves that are generated by hydraulic and pneumatic rock drills are significantly different in shape. Drill rods used with hydraulic rock drills will normally show substantially longer service life, compared with pneumatic rock drills, because of the higher peak stress level obtained with the latter’s piston. The reason is the larger cross-section needed on the impact piston when operating at the lower pressures (6-8 bar) of pneumatic systems compared to the 150-250 bar of hydraulic systems. The more slender the piston shape, the lower the stress level (see Figure 3). In addition, a higher impact pressure, a longer stroke length, and less piston weight give a higher impact velocity and a higher drill steel stress. Another consideration is that, for any given percussion pressure, the stress in the drill steel will be higher with reduced crosssection of the drill rods. Figure 3 compares the stress level generated by three different pistons having the same weight, but different shapes and working at different pressures. The lowest stress, or shock

The wave loses some 5-7% of its energy for every additional coupling, as it travels along the drill string. This loss is partly due to the difference in cross-sectional area between the rod and coupling sleeve, and partly due to imperfect contact between the rod faces. The poorer the contact, the greater the energy loss. When the shock wave reaches the bit, the buttons are forced against the rock, thereby crushing it. The efficiency at the bit never reaches 100%, because some of the energy is reflected as recoils or reflecting waves (see Figure 4). The recoils can be of tensile or compressive type. With a sharp bit, or when there generally is a shock wave with a too high energy content, or when there is poor rock contact, we get tensile wave reflections. The poorer the contact between the bit and the rock, the less is the bit ­efficiency. With a worn bit, or when we have a shock wave with too low energy content, we get compression wave recoils. Both recoil types cause damage to the drill steel and rock drill, but the damage can be reduced with an ­efficient damper arrangement (see Figure 11, page 7).

Percussion pressure It is only when drilling in sufficiently hard rock that the maximum achievable energy per blow can be utilized. In soft rock, the percussion pressure, and thus the energy per blow, will have to be lowered to reduce the recoils. To get the longest possible service life from shank adapters and rods, it is important to ensure that the working pressure (and impact energy) is matched to the rock conditions and the drill string at all times (see Figure 5).

Feed force Drill feed maintains the drill bit in close contact with the rock to get benefit from the shock waves. However, the bit must

Production Drilling in Underground Mining

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Percussion pressure

Soft rock

Hard rock

Figure 5: Percussion pressure is lowered in softer rock to reduce reflected energy. Feeding

Low percussion pressure

High percussion pressure

Figure 8: Working relationship between bit diameter (x-axis) and speed of rotation for a given drill. Figure 6: Feed force must be matched to percussion pressure.

If the impact pressure (and power) is increased, the required feed force will be increased (see Figure 6).

Rotation

Figure 7: Relationship between impact frequency and drill bit rotation.

still be able to rotate. The feed force must always be matched to the percussion pressure. To do this, the feed force is increased until the joints are well tightened (but still easy to loosen) at a good penetration rate. Further increase will cause deviation and shorter ­service life of the drill steel due to problems with uncoupling the rods from a high tightening torque. In the case of poor feed, the penetration rate will drop, and probably the rotation torque will not be high enough to tighten the couplings, which will run ‘open’. The service life of the drill steel will thus be shortened.

The purpose of rotation is to turn the drill bit to a suitable new position for the next blow, giving the bit a correct indexation. Using button bits, the periphery is turned about 10 mm between blows. Consequently, the rotation rate needs to be increased using higher impact frequency and reduced bit diameter (see Figures 7 and 8). If the actual rotation is not smooth for a fixed impact frequency, shank adapter life will be reduced. When using insert bits instead of button bits, the recommended rotation rate is 10-20% higher.

Flushing Drill cuttings are removed from the hole bottom to the surface by water flushing or air blowing, or a combination (water mist). As the power output from rock drills increases, giving increased penetration rate, efficient flushing becomes more important. The flushing capacity must be increased with larger bits and larger difference between the bit and rod size diameters The required flushing speed will depend on:

Production Drilling in Underground Mining

• specific gravity and particle size – the larger or heavier the particles, the higher the flushing speed that is required; • particle shape – spherical particles require more speed than flaky, leaf shaped particles. A rule-of-thumb is that the flushing speed in the hole should be a minimum of 0.5 m/s for water flushing and 10 m/s for air flushing (or water mist). The flushing medium is normally water for underground drilling.

Setting parameters The drilling parameters for percussion pressure, feed force, and rotation must harmonize, in order to optimize drilling economy. In practice, the driller sets the percussion pressure to get an acceptable, but not excessive penetration rate, and then sets the rotational speed with regard to the percussive frequency and bit diameter. When drilling starts, the feed is adjusted to get even and smooth ­r otation. If this is not achieved, the percussion and feed pressure can be progressively reduced. Smooth and even rotation will result in good ­penetration and long component ­service lives. Lost energy, representing low efficiency, will result in excess heat generation. 5

Talking Technically

Soft/Medium hard rock

Hard rock

10,000 psi 70 MPa

Very hard rock

30,000 psi

50,000 psi

210 MPa

350 MPa

70,000 psi 480 MPa

Figure 9: A range of rock types and hardnesses, which can be tackled by rock drills successfully.

The temperature of the adapter sleeve can be checked to ensure that the drilling parameters are correctly set. Immediately after drilling, the temperature should be approximately 45 degrees C when drilling with water flushing and about 60 degrees C for air flushing. Atlas Copco provides

a temperature gauge: part number P/N 9850 8715 00. Loose couplings will cause drilling problems, but they can be tightened during drilling by increasing the friction of the bit against the hole bottom. This can be done by increasing the feed, increasing or decreasing the rotation rate, or by changing the bit.

Additional factors in longhole drilling There are some special parameters that have to be borne in mind for longhole drilling. Water entry: The entry of water into a rock drill and the hydraulic

Figure 10: Comparison of properties for the two stroke lengths in the COP 2550UX rock drill.

Impact Impact Power (kW) Pressure (bar)

220

21

210

20

200

19

190

18

180

17

170

4

160

15

150

14

140

13

130

12

120

11

110

10

100

500

8

Stroke length 2

450 5 E

400

P f

P= Impact power E= Impact energy f = Frequency

350

Stroke 2

E=

E

1 3

16

Feed Force Stroke length 3

22

6

Stroke 3

r

230

we

23

Po

240

550

e

24

gy

250

su r

25

Percussion Data COP 2550UX

En er

260

Pr es

26

Impact Energy (J)

300

Equal Impact Energy 250

2 38

40

7 45

50

A changed stroke length and impact pressure can maintain the impact energy but increse the frequency and the impact power.

200 54 Frequency (Hz)

The chart shows indata for impact pressure 180 bar with stroke length 3 (intersection 1). The frequency is read to 40 Hz (2), the impact power at this frequency is 16,8 kW (3) and the impact energy is 420 J (4). By changing to stroke length 2 and maintain the impact energy 420J (5) the impact pressure needs to be set to 238 bar (6). The frequency achieved is 53 Hz (7) and the new impact power is 22,2 kW (8).

6

Production Drilling in Underground Mining

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2 1

Constant oil flow

1 8

3

5 “floating” position

7

4

6

Figure 11: Hydraulic double damper.

system may, especially when in combination with drill cuttings, lead to premature wear and failure of rock drill and hydraulic system components. Consequently there will be high running costs and downtime. This risk can be limited by using a drill collar assembled on the shank adapter when drilling upwards. Worn out flushing seals must be changed immediately. The new COP 2550UX rock drill has extra seals to cope with high flushing pressure and prevent water ingress, especially in drilling upholes. Water from the ‘tell-tale’ hole at the front of Atlas Copco drills gives a signal to the operator when the seals are worn out. Dirt entry: Dirt in combination with water will cause heavy wear and reduce the service life of components. All Atlas Copco rock drills sold on underground drill rigs have pressurized mating surfaces, which means that the lubrication air pressure, generally 2-3 bar, is applied to the mating surfaces and cavities for the tie rods, preventing dirt entry. Heavy drill strings: A heavy drill string may cause problems, especially when drilling long holes downwards with tube drill strings such as TDS 76 and TDS 87. The high contact pressure at the bit leads to high rotation torques, which may lead to problems with uncoupling the threads and high wear on the driver in the rock drill. With an extractor device, uncoupling the tubes

can be eased, even if the drill string is not stuck. With a hanging drill string, the extractor helps the percussion in ­‘rattling loose’ the drill string.

Adapting impact power to rock and bits The concept of impact power can be confusing, since a combination of high energy and low frequency can give equally large power as for low energy and high frequency. Two rock drills having the same nominal power rating might therefore have quite different properties. Simplified, impact energy requirement derives from rock properties and the hole dimension. Increased ­frequency, and the power, then gives a higher penetration rate. Atlas Copco’s COP 1838HE drill is especially developed for long hole drilling with a bit diameter 76-89 mm. The impact piston has two different stroke lengths, giving ‘two rock drills in one’. COP 2550UX is a new 25 kW rock drill for T51 drill steel with a bit diameter 76–115 mm. It also has two stroke positions, and is supplied with a powerful hydraulic extractor to save time and drill steel. Figure 10 shows the impact power as a function of the impact rate for stroke lengths 2 and 3. The corresponding impact pressure at each graph point is shown in black. There is also a comparison of the same impact energy for the

Production Drilling in Underground Mining

two strokes. For soft rock or small bits a lower impact energy and a higher frequency is preferable because each blow contains enough impact energy to crush the rock and, therefore, the penetration rate increases the higher the frequency. Stroke length 2 in Figure 10 is thus more suitable because, for a certain (low) energy, it gives the highest frequency. For hard rock or large bits high impact energy is required to crush the rock. With the COP 2550UX, both strokes 2 and 3 give high impact energies if the pressure is raised. Stroke length 3 has a lower frequency and is thus most suitable if the input power is limited. If not, stroke 2 can be used. This means also that a rock drill does not necessarily have to be run at its rated impact power to perform optimally. The impact energy required for the actual bitrock combination is much less than the maximum impact energy. A change between stroke lengths but at the same impact pressure does not normally require any change in feed force. It is therefore advisable to choose a rock drill with as much impact energy as needed to crush the rock, but not excessively high, and the frequency set as high as possible to get the best penetration rate. Obviously a rock drill cannot be tuned to deliver the ‘ideal’ shock wave energy to crush the rock throughout the drilling operation. The bit gets worn and so the ideal energy amount increases, but it’s possible to set the parameters to a good compromise.

Hydraulic dual damper Atlas Copco’s more recently developed hydraulic rock drills like COP 1838-series and COP 4050MUX have a dual-damping system. This is an effective device for giving a good ‘­suspension’ of the drill string just as it absorbs compression recoil energy. Older models like COP 1238ME have a hydraulic single-stage damping system, which is less effective and lacks the energy-absorbing feature, but still is better than drilling without damper. The dual-damping system provides good contact between the bit and rock to increase penetration rate, and give a good tightening torque on 7

Talking Technically

impact piston (on the right) has hit the shank adapter and started a return stroke away from it. The extractor piston has been hit by the shank adapter through the collar on the middle of the shank. The extractor piston ‘bounces’ on the hydraulic fluid (red) and hits the shank adapter again, but in the right direction to free a stuck steel, as ­indicated by the ‘feed force’ arrow.

12a

Feed system In order to obtain controlled rotation torque for good, but not excessive, coupling tightening, Atlas Copco uses its RPCF (Rotation Pressure Controlled Feed) feature in the drill control system. If the rotation pressure (and torque) increases, the feed force is reduced, and vice-versa, in a controlled way. If the rotation pressure gets excessively high, the feed is reversed (anti-jamming) in order not to get stuck. The drilling equipment performs best when the feed is applied in a controlled and smooth way. A hydraulic cylinder feed gives a smoother operation than a chain driven feed.

12b

Set parameters Figures 12a and 12b: Operation of a hydraulic extractor.

coupling threads. It also increases shank adapter and drill steel service lives. Referring to Figure 11, the basic reflex damper system consists of a damping piston (1), accumulator (2) and shank adapter (3). The impact piston is (4). When the reflected shock wave knocks the damper piston backwards (to the right), the pressure rapidly rises in the chamber (5) as the check valve (6) is closed. This forces oil in chamber (5) to be released to the oil reservoir (7) over the edge (8). This absorbs the energy by means of heat. At the same time, the accumulator (2) is charged, to provide a fast movement of the damper piston back to establishing contact again with the shank adapter (3). A good way of checking that a correct feed force is applied is to monitor the damper pressure. When drilling horizontally it should be kept constant at a certain level depending on the rock drill model, the drill steel and bit. 8

When drilling upwards, the damper pressure will increase due to the increased weight of the drill string, and the opposite when drilling downwards. Atlas Copco longhole drill rigs have a control system feature called DPCI (Damper Pressure Controlled Impact), which senses the damper pressure and maintains set impact pressures depending on the damper pressure.

Hydraulic extractor A major contributor to overall productivity and economy in longhole drilling is Atlas Copco’s device, the hydraulic extractor, which is optional on all Atlas Copco hydraulic rock drills for longhole drilling. The extractor is comparable to a sliding hammer and it eliminates jamming in the hole, but can also be used to ease loosening of joints during longhole drilling downwards. In Figure 12a, the

All final settings must take place at the face, where the effect of parameter changes can be assessed properly. Atlas Copco gives thorough general instructions on how to set the initial rock drill parameters at every start up of a new rig. By using the Atlas Copco-developed drilling simulation program Diarot, one can predict drilling performance and give settings recom­menda­tions in order to optimize drilling for the conditions. Again, all final settings must take place on site in any case.

Hydraulic rock drill suitability See the separate machine specifications in the final section of this reference edition as regards the suitable conditions for each drill model.

Fredrik Öberg

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In-The-Hole (ITH) vs tophammer drilling in underground mining Pneumatic and hydraulic Until the late 1960s, pneumatic tophammer drilling, employing around 6 bar pressure, was the logical choice for the full variety of holes needed in an underground mine. Raiseborers employing rotary drilling were introduced to supercede conventional manual stoper drilling using ladders and timber platforms, or the Alimak method. By boosting mine air pressure up from 6-7 bar to 10-11 bar, down the hole (DTH) hammer drilling became feasible, and was used mainly for holes requiring high accuracy, such as for drainage, cables and long hole winzes and raises. For production drilling in open stoping, the down the hole drill became popular, especially in Canada. It could be used for drilling in all directions, including up holes, and the term DTH, as used in surface applications, was dropped in favour of the more descriptive ITH for underground work. Pneumatic tophammer drills were progressively replaced by more-efficient hydraulic rock drills, and the pneumatic pressure was increased in stages up to 25-28 bar for the new generation of ITH hammers.

Figure 1: Simba M6 C production drill rig with ITH. Figure 2: Influence of bedding and foliation on drilling.

In case α is greater than 15° the hole deflects perpendicularly to foliation (bedding).

Tophammer drilling The main drawback with tophammer drilling is the in-hole deviation that limits the practical hole length. As the magnitude of deviation is exponential to the hole length, tophammer holes are normally restricted to around 30 m. Penetrating structured rock with strong foliation and bedding properties can cause deviations of up to 5-10% (see Figure 2). As a result, many mines avoid drilling holes deeper than 20 m, unless guide rods are added directly behind the bit, or drill tubes are used. In these cases, the deviation can be expected to decrease Production Drilling in Underground Mining

9

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to 3-5%. Figure 3 illustrates the problem with tophammer drilling patterns in a typical sub level stoping application. The problem is, in fact, three-dimensional, and can produce excessive burden and toe spacing, resulting in misfires or poor ­fragmentation.

Typical influence of bedding on long hole tophammer drilling in sublevel open stoping, max hole length 30 m

ITH drilling The penetration rate of ITH rock drills is almost proportional to the applied air pressure, so an increase to 28 bar will almost treble the net penetration achieved using 10.5 bar. As water mist drilling is necessary underground for dust suppression, there is a net penetration loss of some 20% compared to dry drilling on the surface.

Positive features of ITH • Straight holes – normally the in-hole Ore boundaries Designed hole direction Actual hole direction Critical area for fragmentation

Figure 3: Typical influence of bedding on long hole tophammer drilling in sublevel open stoping, maximum hole length 30 m. Radial hole drilling

Parallel hole drilling 2.0

6.50

2.50

15.00 m

15.00 m 50°

45° 3.70

1.500

1.50 3.70

Undercut drilling using tophammer at El Soldado, Chile Radial hole drilling

Parallel hole drilling

30°

C 3.5

3.5

E 50 to 75 m

CORTE

Shaft

B

A

50 to 75 m

B A´

E 45.0°

C´

45.0°

Section

Plan drilling level

Production drilling pattern using ITH at El Soldado, Chile

Figure 4: Tophammer and ITH drilling patterns.

10

deviation is maintained within +/-0.5% (max +/-1%). This means that hole lengths up to 75 m are commonly used in large mines, such as El Soldado and Mount Isa, with negligible hole deviation. Such hole accuracy can result in substantial savings in the development of drilling drifts, as the sublevels can be spaced further apart. A prerequisite is that the orebodies have adequate size and regular ore/waste boundaries. Less hole deviation means controlled fragmentation of blasted material, resulting in less drawpoint hang-ups, less secondary breaking, less blockages of ore passes and chutes, and better overall economy of materials handling. The usage of ITH drilling challenges the mine planner to a new dimension of stope design and geometry. As actual versus designed hole pattern and location coincides well, the ore/waste ratio can be better controlled. Figure 4 shows the drill ­pattern used at El Soldado, where 64 mm tophammer drilling is used for establishing the trough undercuts, combined with 165 mm ITH drilling for downhole bench drilling from the sub level above. In order to get best usage of the larger holes, the layout of this level resembles a surface bench used at quarries and open pits.

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• Longhole raises can be better developed, with higher precision.

• Less risk of getting stuck in fractured and faulted rock conditions.

• Low noise level at the worksite, as the

hammer is working inside the hole, close to the bit. • Simplicity of operation, service and maintenance means that high availability of equipment can be expected. Nevertheless, to obtain high utilization, a certain scope of mining is required. A single rig has a capacity of about 60,000-80,000 drilled m/year, depending on conditions, assuming 2 or 3 shifts/day, so yield per rig can easily exceed 1 million m3, provided that drill sites are available and this order of production is required. As the hammer is always in direct contact with the bit, no percussive energy is lost in joints. Hence, the net penetration rate does not drop as the hole gets deeper. For tophammer drilling, around 5 % of the percussive energy is lost at every additional rod joint.

Drawbacks with ITH • 6-25 bar compressed air pipes have

to be installed on the drilling level, to provide the required pressure boost.

Crown pillar

4.5 m 8-15 m Typical cabl e bolting ∅ 51 mm drill bit

Production drillin g ∅ 74 mm drill bit

Drawpoint level

Figure 5: Tophammer Simba is used for both cable bolts and production drilling at Zinkgruvan, Sweden.

Conventional tophammer T45/51

Figure 6: Influence of drilling methods on deviation.

• High air volume consumption • ITH drills larger holes of 90-254 mm. The normal range is 110  -178 mm, compared with tophammers at 51-102 mm. As more explosives are used per metre of hole, the cracks after detonation propagate further away from the hole. As a rule of thumb, for every additional 25 mm of hole diameter, the cracks migrate one more metre. As a result, drawpoint brows and sidewalls in pillars might be overblasted and cracked. • Irregular, narrow orebodies cannot take advantage of the longer and larger diameter holes. • As tophammer drilling constitutes the only alternative choice for development of drifts, crosscuts, ramps, rock reinforcement and miscellaneous infrastructure, an additional drilling method is being introduced with ITH. Figure 5 shows a tophammer Simba used for both cable bolts and production holes. • Uphole drilling is avoided as much as possible, except in sublevel caving

Production Drilling in Underground Mining

applications, due to the large amount of wet drill cuttings descending to the working site. Installed rock reinforcement might also be subjected to damage.

Summary There is no simple answer as to which drilling method is preferable. There are advantages and disadvantages with both methods. One governing issue is how much in-hole deviation can be accepted for successful blasting results. Regarding hole deviation related to misalignment and collaring errors, new Atlas Copco drill rigs for both tophammer and ITH drilling are robustly designed and equipped to keep deviation problems to a minimum. Figure 6 shows differences in hole deviation with the different methods.

Hans Fernberg

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Simba L6 C drilling upholes.

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Drilling long straight holes Avoiding hole deviation To achieve good fragmentation during blasting, it is important that the drill holes follow the designed direction along their entire length. Two obvious causes of hole deviation, how­ever, are poor hole alignment and imprecise collaring, although in principle these can be avoided by good working practice on the part of the drill rig operator. A third, and less easy factor to overcome is in-hole deviation, usually owing to the geological conditions of the rock mass being drilled. Consider, for example, a hole that is being drilled in rock comprised of a soft and hard layer separated along a plane that is not at right angles to the drilling direction. Depending on the angle of approach to the plane of separation, hole deviation will arise as a result of the bit either sliding along the harder material, or, alternatively, penetrating the softer material faster. Only if the rig operator knows at what depth this plane of separation lies, can he take appropriate action, such as reducing the percussion and feed pressure of the rock drill when passing from soft to hard or hard to soft rock.

Drilling according to plan To achieve the required fragmentation as indicated by the pre-calculated blasting results, it is a prerequisite that the blast holes are drilled according to the drill plan. This means that the holes must be collared in exactly the right position, and then drilled in the correct direction and to the exact depth indicated in the drill plan. Precision in collaring and hole alignment can be achieved with proper surveying and mark-ups of the drill pattern grid, coupled with a drill angle indicator mounted on the drill feed, and a hole depth instrument. It is also essential to have a good view of the collaring procedure from the operator’s cabin. Various causes of

Collaring misalignment Collaring offset

Planned hole

In-hole deviation

Incorrect depth

Due to collar error

Figure 1: Various causes of hole deviation.

hole deviation are shown in Figure 1. The most influential factor in achieving accurate drill holes is in-hole deviation during drilling, which is usually a result of the particular geological characteristics of the rock mass, such as the grain size, and the degree of fracturing and foliation. The adverse effect of bedding and foliation on in-hole deviation can be clearly seen in Figure 2 where the drill holes have tended to deviate in directions at right angles to the jointing within the rock mass. It is also noticeable that the longer the drill holes, the more accentuated is the deviation. It is often claimed that the amount of deviation is proportional to the depth squared. Experience shows that the approach angle of the drill bit towards the bedding planes is crucial, and there appears

Production Drilling in Underground Mining

to be a tendency for the drill bit to penetrate the rock in a direction that is parallel to the bedding plane when the angle of approach is less than 15 degrees. In contrast, drilling through homogenous rock, such as isotropic granite with minor fracturing, results in little or no inhole ­deviation.

Drill string bending Aside from geological conditions of the rock mass, other perhaps less obvious in-hole factors can have a marked influence on hole deviation, such as hammer specifications and condition, and the bit and drill string design and condition (Figure 3). During the drilling operation, the friction generated between the drill bit and the rock induces a torque in the 13

Direction of foliation/bedding

Talking Technically

Figure 2: Hole deviation shown in a wall of varied, jointed rock types.

drill string above a certain drill rotation rate. The larger the drill string diameter and the greater the rotation rate, the higher is the torque necessary, and thus feed force, to keep the drill string joints sufficiently well tightened. At a particular point along the hole, the drill string will buckle, so that rather than being straight in the hole it is supported by the hole wall close to the midpoint between rock drill and the hole bottom. For a COP 1838ME rock drill, with a drill string diameter of 38 mm and a feed force of 6,400 N at a percussive pressure of 200 bar, this bending length is approximately 11 m. In practice, bending occurs at a somewhat shorter interval since the drill string is never perfectly straight at the commencement of drilling. When the drill string has been extended to twice the theoretical ­bending length, it will buckle once more, so that 14

it is now supported at two points along the hole. At three times the theoretical bending length, the drill string will once again buckle, and so on with increasing hole depth. Assuming the same combination of drill string, impact force and rotation rate, rock drills with ‘floating dampers’, such as the COP 1800-series, COP 2550 and the COP 4050 rock drills require less feed force to keep the drill string joints well tightened than those rock drills incorporating ‘fixed dampers’, such as the COP 1032 and COP 1238 units. Those rock drills with an axial bearing between the drill string and the machine require the greatest feed force to maintain joint tightness.

Drill bits and regrinding Also influencing hole deviation is the geometry of the drill bit face and its

condition, particularly with respect to regrinding. From an accuracy point of view, a flat front bit or a drop centre (concave) front bit (Figure 5) results in a straighter hole than a drill bit with a convex front. It must also be remembered that to obtain the best hole accuracy with all drill bits, they must be reground so that their faces are restored to their original shape in terms of both the buttons and the steel, even if this is more time consuming than simply ‘polishing’ the buttons and not removing any of the steel between the buttons. In this regard, dropcentre drill bits are, once again, preferable to their convex counterparts since the concave shape needs only to be reground such that the profile of the central buttons is restored to its original pattern without adversely affecting hole straightness, even when the concave face eventu­a lly wears flat through normal ­operation. If the drill bit face is plane all the way out to its periphery, the bending moment in the drill string will be proportional to the product of the feed force and the hole diameter, while the lateral displacement of the drill string will be limited by the diameters of the drill bit and the drill string. Thus, if the drill bit is correctly and frequently reground, the feed force will be ­directed to the periphery of the drill bit so that the whole cutting face is in contact with the base of the hole, even if the drill string buckles. With poor and infrequent regrinding, however, the drill bit may ‘wiggle’ on the hole-bottom owing to the uneven ­distribution of the feed force, and will sooner or later result in hole ­deviation.

Drill string considerations Other things being equal, the larger the diameter of the drill string, the straighter the drill hole that will be achieved, since the drill string diameter has more of an influence on the bending length than the feed force (Figure 6). In addition, a larger diameter drill string increases the safety margin against ‘wiggling’ (i.e. the ratio between the maximum bending moment of the drill string and the bending moment at which bending occurs) so that less careful regrinding can be ­tolerated before ‘wiggling’ sets in. This does not mean,

Production Drilling in Underground Mining

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however, that larger string dia-meters should be deployed in preference to less careful grinding. Since drill tubes have larger diam­eters than drill rods, they result in greater hole straightness. A complete drill string of tubes is often necessary in downward production drilling underground in order to achieve sufficient flushing capacity. An attractive alternative is the adoption of a guide tube connected to the drill bit, which, owing to its larger diameter, reduces the possible amplitude of drill bit ‘wiggle’ compared with rods. Also, as the possible angle of ‘wiggling’ decreases with increasing length of the guide tube, the guide tube incorporated into the drill bit should be as long as possible. Unlike a drill string comprised solely of tubes, where the stress waves are transmitted via ‘shoulder impact’, stress waves in a drill string incorporating a guide tube are transmitted down the rods to the guide tube via ‘bottom impact’. Thus the guide tube does not suffer from premature female thread failure. Even though a guide tube will always result in a marginal decrease in drilling rate (depending only on the cross sectional area increase relative to the rods in the rest of the drill string, rather than the drill tube length), the improved hole straightness achieved is normally of greater value to the mining engineer. Another way to minimize ‘wiggling’ is to use Retrac bits (Figures 7 and 8). Characterized by a bit skirt with the same outer diameter as the bit head, in effect a very short guide tube with maximum possible diameter, Retrac bits have been developed primarily to improve retraction of the drill string in difficult rock ­conditions where the tendency for jamming frequently occurs. Debris from the hole is flushed through slots machined along the bit, and the rear end of the skirt has a cutting edge between every slot. Since the Retrac bit cannot ‘wiggle’ as much as a standard bit with a skirt that is significantly smaller than the bit head, hole straightness is, once again, improved. However, the use of long guide tubes will normally result in straighter holes than those drilled using Retrac bits.

Out-of-the-hole factors

Operator-related factors

In-hole factors

Set-up errors

Drilling parameters

Rock conditions

• Wrong set up position • Wrong set up angle

• Feed force • Rotation • Flushing

• Grain size • Fractures • Foliation

Equipment related factors • Hammer parameters and condition • Bit and drill string design condition • Cradle guides • Drill steel support

Figure 3: The drill rig operator can eliminate, in principle, many of the factors influencing hole deviation. Less easy to overcome, however, are the geological conditions of the rock mass being drilled and equipment-related influences.

If a drill string is buckled, then the buckled section may rotate, whereby the bit will work over all of the hole bottom. In this case, there should be no hole deviation, even if the bit is only in contact with the rock at one or two points at the periphery. It is more likely, however, that the buckled section will not rotate, which means that the drill string will be ­subjected to rotational bending. The bending moment in the drill string ­corresponds to the maximum nominal bending stress in the drill string, which is measured some distance from the threaded ends of a rod. However, stressconcentration factors in areas close to the threaded ends result in stresses in these regions that are significantly higher

than the nominal bending stress. For example, the rotational bending stress in a drill string incorporating 38 mm diameter rods with a feed force of 6,400 N and a hole diameter of 89 mm is approximately 15 MPa, equivalent to around 5% of the stress wave amplitude generated by the piston. In this case, therefore, either the impact velocity of the piston must be reduced so that the stress wave amplitude is 5% smaller, or the hole may be drilled at a 5% higher impact velocity (corresponding to 5% higher frequency, around 15% higher impact power and, hence, a 15% higher rate of drilling) provided that the drill string length is less than the theoretical bending length. In practice, the operator cannot be expected to reduce the percussion pressure simply because the pre-determined

Figure 4: Button bit with flat front.

Figure 5: Button bit with drop centre front.

Importance of rotation

Production Drilling in Underground Mining

15

Talking Technically

Long hole precision drilling

T 38

In-hole deviation as function of hole length

speedrod

G T45

speedrod T45

(Derived from investigations at LKAB, Kiruna)

T DS

ui d e

rod

be 6 4 tu

Deviation 1.50 m

1.00 m

0.50 m

15

20

25

30

35

40 m Hole depth

Drill Strings relating to Diagram T38 speedrod® T38 speedrod®/ Standard bit T45 speedrod®/T45 Guide rod/ (old design)/Retrac Bit TDS 64 tube/TDS 64 tube/Guide Bit

Figure 6: Larger diameter drill strings result in less In-hole deviation as a function of hole depth.

bending length of the drill string has been exceeded. On the contrary, the operator requires increased percussion pressure to counteract the decreasing drilling rate owing to increasing bit wear. Therefore, the operator must determine

percussion pressure according to the particular circumstances, so the drill rig may be operated at higher percussion pressures for those holes where the hole depth does not exceed the bending length. Alternatively, if the hole depth

Figure 7: Bit with Retrac skirt. Drop centre front and ballistic buttons.

Figure 8: Bit with Retrac skirt. Drop centre front and spherical buttons.

exceeds the theoretical bending length, the percussion pressure must be regulated so that the drill string is not subjected to rotational bending at those points where it is buckled. Drill string rotation also gives rise to another complicating factor with respect to hole straightness in terms of the phenomenon of ‘whirling’. Similar to the ‘critical rotation rate’ for rotating machines, ‘whirling’ gives rise to a smaller bending length than for a drill string that is not rotating, and mathematically can be shown to be approximately 80% of theoretical bending length of a stationary drill string.

Non-vertical holes The bending length referred to thus far relates only to vertical holes. For slanted holes, the weight of the drill string gives rise to bending, so that the drill string is never straight, and, as with rotational influences, results in a shortening of the theoretical bending length as the hole becomes more horizontal. In benching and production drilling underground, the holes are almost vertical however, and the effect of drill hole angle is normally negli­gible in these applications. 16

Production Drilling in Underground Mining

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Other factors Although relatively uncommon, an­other phenomenon is worth mentioning with respect to in-hole deviation. During drilling, the piston subjects the drill string to a pulsed axial stress, the periodic load of which may theoretically initiate resonance vibration, resulting in plastic deformation of the drill string close to the joints. This phenomenon is very rare, how­ever, owing to the fact that the boundary condition between the bit and the rock is never constant. Also, as soon as the drill string length is greater than the theoretical bending length, it will be supported by the hole wall at one or more points along its length, thereby inhibiting resonance vibration.

Remedies From a practical point of view, there are various ways and means to ­m inimize hole deviation owing to the factors outlined above:

• A stiff drill string, and small clear-

•

•

•

•

ance between the hole and the drill string components, will result in straighter holes. For tophammer drilling, Atlas Copco provides TDS tubes that can be added behind the drill bit to improve the flushing and reduce the risk of the drill string becoming stuck. Even more accurate than tophammer drilling are ITH, COPROD and rotary drilling, all of which result in less deviation than with tophammer drills. Less deviation can be achieved through a combination of reduced feed force and increased rotational speed. Shorter holes allow the rig operator to better control the extent of hole deviation.

Summary Clearly it is impossible to completely eliminate hole deviation, but with the right choice of equipment and by utilizing

Figure 9: Bit with standard skirt and drop centre front.

this equipment in the optimum manner, the drill rig operator can influence hole deviation in a positive way.

Patrik Ericsson

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Production Drilling in Underground Mining

17

Talking Technically

Simba M4 C drilling upholes.

18

Production Drilling in Underground Mining

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Automated longhole drilling Redefining drilling standards Since the 1990s, Atlas Copco has been researching innovative ways of applying the rapid advances in computer technology to the specific needs of the mining and construction industries. The result is a generation of fully computerized drill rigs with much improved productivity, accuracy and serviceability.    Designed with precision drilling, high productivity and swift availability in mind, the M and L ranges of Simba production drill rigs are equipped with the Atlas Copco Rig Control System (RCS), which is flexible and easily expandable. Significantly, the technology provides for varying degrees of rig automation and, ultimately, the possibility of fully automated and remotely monitored drilling.    These drill rigs are of modularized design in both hardware and software, so their functionality is upgradeable step by step. Options such as Advanced Boom Control (ABC) Regular, ABC Total, Drill Plan Handling, Full Drill Data Handling (FDDH) and communication products are available to facilitate quality drilling. Atlas Copco has applied the same new automation technology for all drilling equipment such as Boomer drill rigs, Boltec rock bolting rigs, raise borers, the Cabletec cable bolting rig, the Scaletec scaling rig and ROC surface crawler rigs as well as underground loaders and trucks.

Rig Control System RCS, which is a CAN-bus based system using standard PC-computer technology, has facilitated a quantum leap forward with respect to logging capabilities, serviceability and drilling accuracy of drill rigs. CAN-bus systems use a single cable that interconnects a series of electronic components and allowing them to communicate with each other. The electronic modules are all developed solely for the rigs, and are ruggedized and protected from external magnetic

The RCS-based production drilling rigs provide excellent operator's environment and improved drilling performance.

and electric influences. For production drilling rigs, the flexibility of the system is highly utilized, and can be adapted and configured for all different types of applications. Customers can start at a low level of automation and, as their requirements change, can upgrade the functions. New functionality can be added, without major rebuilding of the rigs. The current generation of drill rigs is designed for high productivity, accurate drilling, and a comfortable working environment for the operator.

Evolution of RCS The Atlas Copco direct control system DCS is designed for basic drill rigs. DCS provides the operator with basic manual functionality, such as manual boom positioning, and manual drilling and rod handling. Although common on small Boomer drill rigs, the system is only available for the Simba 157 and Simba 1257 production drilling rigs.

Production Drilling in Underground Mining

The EDS electrical direct control system is an extension of the DCS control system, utilizing electrically controlled hydraulic valves instead of, or in conjunction with, conventional hydraulic valves. The system is common on small and medium size Simba drill rigs. The RCS succeeded the Electrical Control System (ECS) in 2001, when the latter became obsolete. RCS is intended for all kinds of automation in both basic and more advanced rigs. All Atlas Copco computerized rigs are equipped with RCS technology, which activates hydraulic valves around the rig by an electrical signal from a PC rather than a switch or a lever on the operator's panel. Not only does this provide for advanced automation, proportional-type valve control, and incorporation of timers and parameter-based rock drilling control, but it also allows the system to be upgraded by installing new software at the worksite. The simplicity of the system means that the driller does not have to be an 19

Talking Technically

Advantages

Disadvantages

DCS - Basic and robust

- Automation not possible - Line-of-sight remote control not   possible

EDS - Basic and robust - Remote control panel - line of   sight (LOS)

- Automation not possible - Less control functions for   the drilling process

RCS - Full automation possible - Designed for built-in optional   functionality - Can be upgraded in the field - Easy to maintain and adjust - Simple hydraulic and   electrical system - Low maintenance cost - Easy to operate, with good   man-machine interface - Less hose metres

- Depending on automation level   the RCS may require a more   extensive training programme

electrical engineer or an IT technician to operate, maintain or even upgrade a rig, yet still benefits from electronic and computer technology in increasing productivity and decreasing drilling costs.

Levels of automation

Points for and against various control options.

Different levels of automation can be achieved for major drill rig operations.

Advantages Operation - Drill rig operation   Man-machine interface

ABC Basic ABC Regular ABC Total







Drill rig set up - Angle indication - Manual drill positioning - Automatic drill positioning - Automatic anchoring

  n/a n/a

   n/a

   

Rod handling - Manual rod handling system - Automatic rod handling system

 n/a

 

 

Drill control - Hole length indication - Advanced drill control - Automatic drill control (one-hole-auto) - Breakthrough automatic stop - Detection of worn out drill bit - Automatic fan drilling

  n/a n/a  n/a

     n/a

     

Logging functionality - Statistic logging - Maintenance logging - Drill quality logging - Measure While Drilling (MWD)

   

   

   

System monitoring - Basic system monitoring - Rock drill surveillance system - Smart oil leakage shutdown access

  

  

  

Rig communication and data exchange - Basic communication - Mine text massage system - Rig Remote Access (RRA)

  

  

  

n/a





PC software - Ore Manager

 Equipped as standard;  Optional; n/a not available option

20

With the RCS platform established, Atlas Copco has been able to engineer a wide variety of new automated functions for all of its RCS drill rigs aimed at lowering costs while increasing performance. The Simba M and L ranges of longhole drill rigs can be engineered to three different levels of automation: ABC Basic, ABC Regular and ABC Total. Included in all Simba RCS systems is a standard level of automation, ABC Basic. It consists of computer controlled boom and feed movement allowing accurate proportional movement. Also included are: system monitoring and fault diagnostics; data loading procedure; angle indication of feed position; hole length indication; basic logging; manual drill unit positioning; and manual rod handling functions. There are two optional levels of ABC, namely Regular and Total. ABC Regular provides a medium level of automation, assisting the operator to accurately position, align and drill holes to the required depth, and to gather drilling data for office analysis. For a Simba drill rig, ABC Regular includes the ABC basic functionality plus: automatic rod handling and one-hole automatic drilling; boom position feedback on operator’s display; logging of drilled hole on PC-card which can be analyzed in the office, using the Ore Manager software. Options to ABC regular cover navigation to mine coordinate system; bit changer for tophammer drill rigs; drill plan handling without full fan automation, but with automatic positioning help. ABC Total enables a complete fan to be drilled automatically, converting the operator’s role to that of supervising the drill rig. For production drilling applications, a single operator can handle several rigs by just starting the autonomous drilling of the complete fan, and then move over to the next drill rig. ABC Total for a Simba drill rig includes the ABC Regular functionality plus: automatic fan drilling

Production Drilling in Underground Mining

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from pre-selected drill plan; manual sequence and position teach-in to prepare for a fully automatically drilled fan; automatic drilling, with manual positioning, automatic collaring and drilling; hole to hole move strategy; hole sequence programming; and computer guided positioning of boom and feed according to a pre-selected fan plan.

Drill rig operation Common to all automation levels is the man-machine interface (MMI), which provides the operator with a simple and logical graphical display of different functions for drilling control, such as the rig angle, current drilling parameters, rig monitoring and fault detection. The interface incorporates an Atlas Copco display and control panel unit mounted either in the cabin/canopy on the drill rig or on a remote trolley linked to the rig by a CAN-bus cable. Logical control makes the system easy to learn and, importantly, on-screen gauge displays eliminate the requirement for hydraulic hoses to be linked to the control panel or fed into the cabin.

Drill rig setup A hole alignment accuracy of within ±0.1 degree is attainable with the Simba L and M rigs as electronic sensors provide graphical information on the operator's display regarding the drill's rotation angle and tilt angle, or fan inclination. The operator can configure the direction of rotation and locate the zero points according to the mine’s drill plan. Collaring angles for each hole can be logged and stored if the drill-quality logging option is installed. Manual drill unit positioning is fitted as standard on all the Simba M and L drill rigs, whereby the drilling unit and feed extension are manually operated from the control panel. Proportionally controlled valves help the operator to quickly establish the required feed direction using the joysticks while preprogrammed drill unit rotation end stops prevent accidental damage to any hoses. To speed up feed positioning in cases where the drill plan handling option is used there is an additional function called Automatic Angle Adjustment (AAA).

The RPCF keeps the rod joints tight.

By simply holding down a button on the control lever the feed will be positioned in a fast and accurate way according to positions defined on the drill plan. Further automation during rig setup can be achieved at the ABC Total level with the automatic control of the drill rig stingers and feed extension during anchoring and de-anchoring.

Rod Handling System To satisfy current drilling demands, a Rod Handling System (RHS) is included on Simba rigs. Depending on the selected drill string, the RHS allows the operator to use either Speedrods or TDS tubes. TDS tubes improve hole straightness and flushing speed whilst minimizing the risk of the rods becoming stuck in the hole. The RHS, which incorporates pre-programmed interlocks to prevent the rock drill and rod handling arms from hitting each other, can be operated manually with the position lever and buttons on the operator's panel. By automating the rod handling sequence, which is included in ABC Regular and ABC Total, more drill metres per shift can consistently be achieved, most notably as a result of drilling during breaks and shift changeovers. Operators need only to key in the required depth to initiate automatic collaring and drilling of a hole, including automatic addition of rods during the drilling sequence and removal when drilling reaches the pre-determined depth. To simplify drill bit changes in mid-hole, the system will automatically feed rods into the hole

Production Drilling in Underground Mining

after the bit change and continue drilling to the required depth in one sequence.

Drill control Drilling to a precise hole-length is preferable to estimating the number of rods necessary to complete a hole. All three automation levels offer an indication of hole length on the operator's graphical display panel, together with penetration rate. This latter information can be particularly helpful in fine tuning the system or when testing different drill bits, and in giving a better understanding of what is actually happening in the hole. Advanced rock drill control is now made possible using RCS, with the RCS platform providing smoother control of the drilling operation, minimizing drill steel stress and improving the penetration rate. These benefits are achieved through control algorithms incorporated into the system. To maintain maximum penetration rates in different ground conditions, as well as in different drilling directions, the Rotation Pressure Controlled Feed (RPCF) algorithm adjusts the drill feed-pressure depending upon the measured rotation pressure. As well as improving the penetration rate, this maximizes the life of the shank adapter, tubes/rods and drill bits by ensuring that the tube/rods joints are tightened with a constant torque throughout the whole length. This can also make rod removal easier as it is unlikely that the joints will be too tight. The Dampening 21

Talking Technically

Drill rig monitoring and diagnostics. Abnormal operational events recorded and stored in the Event Log (a, above), coupled with colour coding and descriptions of various cables and modules (b, above right) make fault finding (c, left) easier and faster.

Pressure Control Impact (DPCI) algorithm, meanwhile, ensures that the drill bit has good contact with the rock during high percussion periods by adjusting the percussion pressure according to the measured damping pressure. This protects the rock drill from striking in open air or with full power in loose rock formations. Finally, an anti-jamming function reverses the feed of the rock drill when excessive rotation pressure alerts the system to a jam, and re-initiates the collaring sequence for the hole. Automated drill control, on the other hand, enables a hole to be drilled to a pre-determined depth in an automatic sequence that includes automatic collaring for the first rod. The collaring length can also be adjusted via the operator's display and control panel to suit varying rock conditions. Together, these features result in much smoother collaring than can be achieved by manual drill control 22

and, importantly, help to minimize hole deviations. Several other automated drill functions can be incorporated to the Simba M and L rigs. Breakthrough Automatic Stop (ABC Total and optional on ABC Regular) terminates drilling when the bit enters a lower level, thereby preventing the potential costly loss of the drill string. Automatic detection of worn-out drill bits can alert the operator when the drill bits have exceeded preset values and need replacing. This is done by measuring the drilling sequence time.

System monitoring and logging functionality As with all the other drilling operations, various levels of automation can be achieved for system monitoring, data logging and downloading functions. The Simba M and L rigs are equipped

at all automation levels with a basic system of monitoring vital rig parameters. Added protection to the drill can be provided by the rock drill lubrication surveillance system, which terminates drilling if the rock drill lubrication air pressure and/or lubrication oil level and pressure fall due to insufficient levels. Maintenance logging, a tool that draws the operator's attention to any uncharacteristic rig performance, is included in all levels of automation. Should key rig or rock drill operating parameters, such as hydraulic oil temperature and level, percussion pressure or rotation pressure exceed pre-set thresholds, the control function will identify the condition. In these instances, rig and rock drill parameters will then be monitored and logged according to pre-set sampling times. By downloading and evaluating the data, technicians can identify drilling problems owing to abuse, poor preventative maintenance or extreme drilling conditions. Accidental loss of hydraulic oil can be detrimental, both in terms of cost for the mine and the environment. Protection against such leakages is available through the smart oil leakage shutdown system, whereby the rig is shut down and the operator alerted with an onscreen message, if the control system detects a hydraulic oil leakage exceeding preset values. The Simba M and L rigs are also equipped to log basic statistical data such as percussion hours, which can be downloaded onto a PC card by the operator. This tool is useful for service scheduling. Percussion hours for each individual

Production Drilling in Underground Mining

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Direct menus on the display allow required information to be found quickly, including (bottom right clockwise) drilling parameters, angle indication, settings and drill plan.

rock drill used on the rig can also be logged separately. It is vital to accurately position holes for the charging and blasting process and the drill quality logging function provides feedback to the planning personnel on what was drilled, when and where. The Simba M and L rigs equipped with this tool can log hole angle and depth as well as position data, which can be downloaded and used later to be compared with the actual drill plan.

IREDES In order to facilitate use of different equipment from different producers in the same organization, Atlas Copco, together with other major machine manufacturers, mining and construction companies and third party suppliers, has established a

standard for data exchange between rock excavation equipment and users’ computer systems. This International Rock Excavation Data Exchange Standard, or IREDES, is the common language in data exchange for mining and tunnelling. Ore Manager, which is IREDES compatible, can also be used to analyze the outcome of a drilling sequence in order to optimize the subsequent charge and blast sequences. By defining one common format or language for handling data, the mining industry can introduce new technology without being dependent upon one supplier for intelligent mining automation systems. Indeed, third-party companies are enabled to provide add-on IREDESconformant parts to a range of customers at reasonable prices.

Production Drilling in Underground Mining

Such standardized systems also mean that end-users' costs can be kept to a minimum, since data transfer does not require more expensive, tailor-made interfaces. Such cost considerations are particularly important for those companies and projects where automation could make the development of smallscale operations more viable. Original equipment manufacturers will also benefit from the development of standardized systems since valuable resources that would otherwise be tied up with interface customization could be freed up to concentrate on other technology developments.

Rig communication The communication link between the operator and the rig is a basic function 23

Talking Technically

PC-card for transferring of drill plans and log information to and from the drill rig.

that enables the operator to keep track of the drill rig status or drill production data for maintenance and production monitoring purposes. Such a basic data exchange function is included in all Simba rig control systems, whereby the operators can download/upload data/ programmes from/to the rig control system using a PC-card. Very simple to use, the data is stored as .txt files, which can be accessed on any standard PC. As an option, a mine text message system can be incorporated in the Simba M and L rigs allowing the operator to receive status and alarm messages transmitted from the drill rig over the mine's local radio network. These warning messages can be customized to a specific mine site and can include status, warning, error and alarm messages. This function, or the similar data online function, is essential when operating the drill rig in ABC Regular or ABC Total automation modes as it allows the operator to respond to planned and unplanned events on the rig, even when it is unattended. Used to its full potential, this system of one-way messaging from the rig to portable radios and computers makes it possible for a single operator to oversee the operation of multiple drill rigs, while dedicated service request messages can be transmitted directly to the service technician. 24

Another possible feature is the Remote Desktop, which enables access to the drilling menus from a remote location.

Automation options All Simba drill rigs can be equipped with a series of major automation options, such as: Measure While Drilling, Drill Plan Handling, Drill Plan Adaptation, Mine Navigation, Full Drill Data Handling, Rig Remote Access and Ore Manager. Measure While Drilling (MWD) function logs a number of parameters while drilling to provide quality input for analysis of the rock properties. Hole depth, penetration rate, damper pressure, feed pressure, percussion pressure, rotation pressure and air/water pressure are recorded at intervals during drilling and the information, coupled with hole deviation measurements, will indicate ore boundaries and assist in the charging and blasting process. By optimizing the rock fragmentation in this way, costs for the whole rock excavation process can be reduced. Drill Plan Handling (DPH) includes features such as importing drill plans that contain planned drill holes; exporting quality logs that contain the drill result; graphical view of the planned

and drilled holes; automatic angle adjustment to the closest hole in the drill plan; automatic adjustment of the hole start points, so they fit the working area of the rig; basic navigation, manually entering the difference of the rig’s ideal position and the actual position, and/or drill bit to point out marked reference points in the drift. Drill Plan Adaptation (DPA) is an option to Drill Plan Handling that allows the operator to adjust the collaring point of the holes, keeping the hole bottoms in the same position. Using this option, the operator can avoid obstacles and installations, and carry out collaring in cracked zones. Mine Navigation (MN) is an option to drill plan handling that gives more possible navigation methods. The drill plans can be planned in the overall mine coordinate system. Full Drill Data Handling (FDDH) is always included in ABC Total and is an option to ABC Regular. FDDH includes features such as: importing drill plans that contain planned drill holes; exporting quality logs that contain the drill result; graphical view of the planned and drilled holes; automatic angle adjustment to the closest hole in the drill plan; automatic adjustment of the hole start points, so they fit the working area of the rig; basic navigation, manually entering the difference of the rig’s ideal position and the actual position, and/or drill bit to point out marked reference points in the drift. FDDH also includes Measure While Drilling (MWD). The Rig Remote Access (RRA) option integrates the drill rig to the customer’s site computer network. This enables functionality such as work order handling, log data transfer, and remote troubleshooting. Using RRA, drill plans can be uploaded to the drill rig, or log files downloaded to the controller’s PC via a LAN/WLAN connection. Drill rig status can be observed on-line using a standard web browser on a remote PC. Since machine monitoring is carried out through the mine site data network, there is no extra requirement for a machine specific data communication system or network. This reduces the level of cost and support necessary as local, on-site IT technicians can undertake rig communication and network support.

Production Drilling in Underground Mining

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Further cost reductions are possible through: rationalization opportunities, even at smaller mine sites; cost-effective integration into existing network systems owing to standard communication protocols; more efficient production and rig maintenance planning owing to automated information exchange between central office and the rig; and increased rig availability as a result of online expert trouble shooting assistance from Atlas Copco, provided the mine data network has Internet connectivity or modem connection on site. Ore Manager (OM) can generate a PC-compatible drill plan, which has to be available when you should operate a drill rig at the ABC Total level of automation. Ore Manager is a Windowsbased support software for the drilling operation in mining projects. OM runs on a regular office PC. It is primarily used for the creation, organization and administration of drill fans for Simba drill rigs equipped with the optional ABC Regular or ABC Total functions. OM also has functionalities for retrieving and analysing quality logs and MWD data. OM provides a quick and easy way to check a drill fan and to compare the drilling result with the planned fan. The result is collected from the quality log.

CAD integration A more elaborate method of handling drill fans and planning of production drilling is to integrate the Simba drill rigs with the CAD/planning system at the mine site. This means that there is no need for manual handling or design of fan plans in the mine. The fan plans are designed in the CAD system according to known or anticipated ore boundaries. In a CAD system the mine design exists in a 3-D model. The ring design package of the CAD system generates a fan plan for the Simba and exports it in IREDES format. The fan plan is transferred into the Simba via the mine network or by means of a PC card. The operator of the Simba accepts the fan plan, navigates the drill rig, drills the fan, and saves the quality log file back to the CAD system. At the moment, integration exists between Simba RCS and Surpac, Vulcan

Rig Remote Access offers supervision or control of a drill rig.

and Mine 2-4D systems, and more are to come.

Drilling economy The new generation of computerized drill rigs offers a very precise adaptation of the drilling parameters to actual rock conditions, resulting in better drilling economy. Correct adjustment to the actual rock conditions ensures precise collaring, straight holes without deviation, and extended lifetime of drill string components. The driller’s experience counts, but RCS assists him to do a good job. Modern drilling in mines is associated with very precise requirements, in order to get the best fragmentation and not to unnecessarily dilute the ore. To ensure efficiency in the mining process the Atlas Copco Simba production drill rig can be used to drill just in the ore and avoid drilling, charging and blasting areas with pure waste. A well-designed fan plan adapted to the actual ore deposits, correct drill rig navigation, accurate drilling, precise explosives loading, and correctly timed blasting all ensure a good production result. The Simba with RCS assists the miner to fulfil these requirements and to control the grade of the ore. Since introducing the Simba M and L Atlas Copco has delivered a great number of Simba production drill rigs of 7 different configurations of computerized production drilling equipment. The modular concept of mechanical,

Production Drilling in Underground Mining

hydraulic, electronic, and software components introduced with the new generation rigs has made this possible. Atlas Copco strategy with RCS is to develop a complete programme of electronically controlled drill rig products for the mining and construction businesses and to introduce automation options for all applications. For operators, the learning time is short, and beginners and experienced drillers alike are capable of production drilling after a couple of days of training. To use new technology like CAD integration requires some training in new areas, such as navigation, and understanding of the mine design drawings.

Conclusions Precision drilling, high productivity and swift availability are the criteria for low cost and successful longhole production drilling. With the RCS technology, Atlas Copco gives the driller the opportunity to undertake longhole drilling with faster and more reliable control of the entire operation, while improving drill string life and reducing costs per drill metre. As all mines are, above all, chasing costs, the range of high precision drill rigs gives the mine planners and stope designers opportunities to better optimize the mining process and thereby save costs and increase productivity.

Patrik Ericsson

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Simba M6 C-ITH drilling downholes.

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Faster Simba rigs set the pace Great opportunities The ultimate objective for all miners is to reduce the cost per tonne of ore produced, and this goes hand in hand with the ­o verall effort to introduce more efficient mining methods and equipment. The Simba range of high precision production drill rigs represents a concept that makes the drill rig productive and easy to operate. Fast and exact positioning and collaring, sturdy construction and small hole deviation, fast rodhandling, reliable automatic functions, good exploitation of rock drill power, simple and quick servicing and high transport speed make the Simba M– and L– models Atlas Copco's most efficient generation. But perhaps the real cost saving potential for mine management lies in the new opportunities to better follow the ore boundaries, to reduce the drilling density and to reduce development by spacing the drill drifts and sublevels further apart. Simba production drill rigs incorporate a solution for every drilling application.

Advanced technology Atlas Copco launched the M and L series in September, 2001 to replace the previous generation of Simba drill rigs. Designed with precision drilling, high productivity and swift availability in mind, the Simba production drill rigs are engineered around the Rig Control System RCS platform, a flexible and easily expandable control system that has already been used to great effect in the Boomer range of face drilling rigs. Significantly, the technology provides for varying degrees of rig automation and, ultimately, the possibility of fully automated and remotely monitored drilling. Thanks to this advanced, and easy to learn, computer-based technology, the M and L series Simba rigs can be integrated into the total planning of the mining operation, with a level of

The Simba M and L series production drill rigs incorporate nine different drill units, three feed lengths, six rock drills and an extensive options programme.

monitoring and detailed control that hitherto has not been possible. Further potential for increased productivity can be achieved through improved precision and better control, which allow the operator to drill longer and larger holes, with greater spacing and burden.

Production Drilling in Underground Mining

Simba range Precision drilling, high productivity and good availability are fundamental requirements for low cost and successful production drilling. Designed with these criteria in mind, the range of Simba M 27

Talking Technically

Dimensions in mm

1150 900

Stingerextension

o

R

30

29

70

1200 (900) Feed extension

1500 (PH)

RD = Ring drilling PH = Parallel holes

30 o

(R

4915

D)

1825

380o

150 7440

Stingerextension 2000

Type M3

Simba type M3 drilling configurations 3000 (PH)

Dimensionsion mm

Stingerextension

750

1500

o

30

750

29

(R D) H)

380o

1825

90 (P

H)

4915 4600

70

R 27

30 o

(P 150 0

R

1200 (900) Feed extension

1150 900

RD = Ring drilling PH = Parallel holes

150 7440

Type M4

Stingerextension 2000

Simba type M4 drilling configurations.

and L series production drill rigs incorporate a solution for every drilling application. The complete range features the following models: M3 C, L3 C, M4 C, M6 C, L6 C and M7 C. The models M3 C, M4 C, M6 C are also available for in-the-hole hammer drilling (ITH). The range is broadened by the availability of an array of options such as rod handling systems, extractor units for the rock drills, air/water-mist flushing, additional stingers, water reel, BAS Breakthrough Automatic Stop, MWD Measure While Drilling and upgrades of the level of automation to ABC Regular and ABC Total. The COP 1838 rock drill is fitted as standard across all the new M series and is suitable for hole diameters of 51-89 mm or 89 COP HEX for 76-89 mm diameter holes. The two L series models, meanwhile, are equipped with the powerful COP 4050 rock drill for drillhole diameters ranging from 89-127 mm. Consequently, these larger rigs are equipped with a larger power pack than the M series (2 x 75 kW rather than 2 x 55 kW) to match the requirements of the much larger rock drill. All 28

the machines can also be equipped with RHS rod handling system for mechanized drilling. For ITH capability, COP 34, 44, 54 and 64 hammers can be supplied for hole diameters of 95-178 mm. All Simba production drill rigs are based on the sturdy modular designed articu­lated M-carrier, and are powered by a Deutz low-emission diesel engine (Stage III/Tier III). Rated at 112 kW, this particular engine provides for longer life, lower maintenance and operational costs, and, above all, fast ­t ramming speeds of up to 15 km/h. This makes the Simbas particularly effective when negotiating steep ramps or inclines. Other features include high ground clearance, four-wheel traction, and articulated steering for easy manoeuvring, while an optional silenced FOPS-approved cabin, with panoramic view, affords an improved working environment for the operator. Five different positioning systems are available through various combinations of the pendulum, the slide table and, in the case of the M3 C and M4 C models, an optional turntable. All of the new Simbas offer 360 degree ring

drilling, and can drill parallel holes up to 3 m apart, making the machines ideal for longhole drilling applications, such as in sublevel stoping and sublevel caving. All tophammer rock drills for the Simba rigs are equipped with a dual damping system, which means that more impact energy can be exploited without increasing wear in the ­d rill steel – in other words, higher production for the same, or a lower, cost. To further enhance longhole drilling productivity and cost efficiency, particularly in difficult rock conditions, an extractor unit is available as an option for the COP 1838, COP 2250 and COP 4050 rock drills. This unique back hammering device serves two main purposes: • To practically eliminate jamming and the subsequent loss of drill strings stuck in holes; and • to assist in the uncoupling of ­d rill string joints. The back hammering action is a reversed percussive effect equal to around 20% of the conventional drilling impact energy. This reduces the rod handling time between holes by eliminating jammed joints, as well as reducing wear on gripper jaws, the shank and the drill. A jammed drill string can also potentially represent a significant replacement cost for a mining operation or contractor. Once again, the incorporation of the extractor can m ­ inimize such costs through its ability to actively back hammer on the jammed string to remove the obstacle. The improved drill unit, with up to four stingers on the drill feed, provides a solid set up. The aluminium feed incorporates two hydraulic stingers mounted directly on the feed beam as standard, and can be equipped with a further two for ‘rock solid’ positioning in particularly difficult conditions. This provides improved stability in the set-up of the  feed, which is extremely important in collaring and drilling straight holes. With the help of the stingers the drilling unit is supported during the drilling process. The stingers absorb the side forces during collaring and remove the stress created by the feed force. The combined drill steel support/guide can also be

Production Drilling in Underground Mining

Talking Technically

easily adapted for different combinations of drill steel and drill tube. The double-bottom feed beam easily withstands the high stresses involved when drilling, while the double action hydraulic cylinder, with its direct coupling to the cradle, gives smoother and steadier movement of the rock drill. Thanks to the replaceable wear pads and easily adjustable cradle, centring of the rock drill can be maintained without difficulty.

Extendable intelligence The heart, or perhaps more accurately, the brain, of the new machines is the RCS platform, which not only allows the rig operator to drill faster and with much greater precision, but also simplifies the drilling functions and ­trouble shooting. The RCS allows for extendable intelligence, provides a good operator interface, and has the potential to be linked up to mine planning software. The system affords three levels of automation – Basic, Regular and Total. At the ABC Basic level of automation, all drilling operations are manually controlled from the operator’s panel and its large display screen. To enhance the quality of the drilling, functions for angle of drilling and hole depth measurement are incorporated as standard, along with statistics logging and event logging to help in preventative maintenance. Incorporating all the functions of ABC Basic, the ABC Regular level of automation allows the operator to initiate automated single hole drilling. Extended logging capability and drill plan handling are available as options. Ultimately, the drill rig can be fully automated if equipped to the ABC Total level, with the operator using the control and display panels only to set up and initiate automated sequences such as automated multi-hole drilling. As a result, only one, or a team of a few operators at most, is required to operate and supervise several drill rigs. Monitored and controlled from the operator’s panel, each drilling function is handled by dedicated, locally positioned modules that are interconnected through a CAN-bus network. The RCS

The advanced hydraulics system has enabled Atlas Copco to reduce the total hose length by around 30%, which dramatically improves the operator’s line-of-sight, as fewer hydraulic hoses are linked to the control panel or fed into the cabin.

has enabled Atlas Copco to reduce the total hose length on the Simba production drill rigs by around 30%, which provides for higher machine availability owing to fewer hose failures. Furthermore, the introduction of RCS has simplified cabling significantly, and the system is programmed for selfdiagnosis, making trouble shooting much easier. Together, the combination of the RCS and the proportional hydraulics provides greater drill precision and smoother positioning, particularly during hole collaring. Hydraulic oil leakage is also kept to a minimum, for example due to hose failure, by automatic shutdown of the hydraulic pumps. By also enabling smoother control of the drilling operation, the RCS platform helps to minimize drill steel stress

Production Drilling in Underground Mining

and to improve the penetration rate. To optimize penetration rates in different ground conditions, as well as in different drilling directions, the control system constantly monitors changes in the rock conditions, and adjusts the drill feed pressure, depending upon the measured rotation pressure, to further increase the penetration rate without risking the life of the drill. If rotation resistance becomes excessive, an anti-jamming function is activated, and the collaring sequence for a new hole is initiated. As well as improving the penetration rate, the RCS maximizes the life of the shank adapter, tubes and drill bits by ensuring that the tube joints are tightened with a constant torque throughout the whole length. At the Zinkgruvan lead 29

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Stinger extension Stinger extension 1150 900 o

30

Feed extension Feed extension 1200 (900) 1200 (900) 45 o 45 o

45 o

o4 o 45 5

380o

380o

2780

5650 5000 5650 5000

45

o

150

150 8520

2780

D) (R 80 48 R D) (R 80 48

30

R

o

(RD6)0 (RD) R 2760R 27

1150 900

3000 (PH) Dimensions 3000 (PH) Dimensions in mm in mm

RD = Ring drilling RD = Ring drilling PH = Parallel holes PH = Parallel holes

8520 Stinger eStinger xtensionextension 2000 2000

TypeType M6 M6 Simba type M6 drilling configurations.

and zinc mine in Sweden, for example, drill tube life has increased from the 1,200-1,300 m being achieved with the mine’s earlier rigs, to more than 1,800 m with its Simba M4 C. Significantly, the RCS system is capable of accepting new software, which can be easily extended. Another important feature is its easy integration into other systems.

was introduced on the Boomers some three years before the launch of the new generation Simbas. Spare parts and consumables for the Simba rigs are, for the most part, the same, so technicians familiar with the other RCS rigs should have no difficulty in finding their way around the new Simba drill rigs. Indeed, the same modular design concept, as in other RCS rigs, provides a better serviceability. Being able to use standard equipment and systems is a great advantage to maintenance operations, and much effort has gone into making each module easily accessible for maintenance.

Modular overlap The RCS Simba production drill rigs incorporate features and components found on the Atlas Copco RCS rigs. These include the RCS platform, which

Components that require regular service are especially easy to get to, and the Simba production drill rigs have been designed so that they can be readily dismantled into their main components, for ease of lowering into narrow shafts. Such development of standardized equipment and systems has important implications for both the mine and the manufacturer. The mine is no longer dependent on tailor-made, or special, solutions for its drilling requirements, while the overlap between the product families has enabled Atlas Copco to reduce the assembly lead times at its factory.

All of the new Simbas offer 360 degree ring drilling and can drill parallel holes up to 3 m apart, making the machines ideal for longhole drilling applications such as in sublevel stoping and sublevel caving.

700

850 Stinger extension 1200 (900) Feed extension

0

16 00

5 11

6140

Dimensions in mm

o

7850

10

90o 45

o

25o

Parallell holes with 0o boom-lift 35o boom-swing Coverage area 1100x4690 mm Dimensions with 45o boom-lift 25o boom-swing Dimensions with 0o boom-lift 35o boom-swing

35o

900

360o

150

Type M7

30

3900

1600

2000 Stinger extension

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Zinkgruvan experience The first of the new generation Simba drill rigs was delivered in September, 2001 to the underground Zinkgruvan lead and zinc mine, just a few hours drive from Atlas Copco’s drill rig manufacturing facility at Örebro, in Sweden. Historically, the mine actually encompassed three separate operations, but, more recently, access tunnels have been driven to link the entire operation together. Whilst this has meant improved equipment utilization, the tramming distances for such equipment is now much longer. Production is currently being ramped up from around 850,000 t/y in

2002, to some 900,000 t/y, using ­sublevel open stoping and longhole open stoping with paste fill. The latter method was introduced to eliminate the need for post-mining of pillar remnants, and because of poor rock conditions. The mine has identified four major improvements with its Simba M4 C compared with the rig’s predecessors: • The new rotation unit provides much better precision, especially beneficial when drilling opening slots. • The four stingers afford a more stable feed setup, giving good precision in hole alignment, collaring and during drilling.

• Hydraulic oil spillage is almost totally eliminated, owing to a 30% reduction in hoses and a smart oil leakage shutdown system. • The easy-to-learn CAN-bus system, which simplifies trouble shooting. In November, 2002 Zinkgruvan took delivery of its second Simba M-series machine, an M7 C that will be deployed primarily for drilling 54 mm-diameter cablebolt holes. Around 50,000 m/y of cablebolting is carried out at the mine. The rig will also be required to fill in as a production unit, drilling 76 mmdiameter holes.

Patrik Ericsson

With an entirely new frame, nine different drill units, three feed lengths, six rock drills and an extensive options programme, Atlas Copco can offer the right Simba for every application.

Simba modular program with maximum flexibility Type 4 Positioning: Rotation, 380° Tilt forwards, 30° Tilt backwards, 30° Side movement, ±1.5 m with sliding table Extra side movement, ±0.75 m with pendulum arm

Type 3 Positioning: Rotation, 380° Tilt forwards, 30° Tilt backwards, 30° Side movement, ±1.5 m with sliding table

Type M COP 34,44,54,64 COP 1838ME/MEX

Type L

COP 1838HE/HEX COP 2550UX COP 4050MUX

Type M3/L3 Type 6 Positioning: Rotation, 380° Tilt forwards, 45° Tilt backwards, 30° Sideways, ±1.5 m

Type M4

Canopy Telescopic and FOPSapproved

Extra: Turn table ±20° Cabin with panoramic view and FOPS-approved Engine module

Rear module

Type 7 Positioning: Reach, 3.5 - 5.1 m Rotation, 360° Boom up, 45° Boom down, 15° Sideways, ±35° Forwards, 90° Backwards, 10°

Type M6/L6

Front module

Type M7

A HOLMBERG 2007

Alternative pendulum arm with 90° turned feedholder

Power pack

© Atlas Copco 2003

Production Drilling in Underground Mining

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Simba M7 C.

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Increased productivity with ITH drilling

ITH growing in popularity The ITH drilling method is growing in popularity, with increases in all application segments, including blasthole, water well, foundation, oil & gas, cooling systems and drilling for heat exchange pumps.    ITH competes favourably with rotary drilling in open pit mines, mainly thanks to increased productivity and flexibility. Open pit mining has adopted smaller holes where rotary drilling has either been replaced by ITH, or where ITH has been introduced to create a better finish to the pit wall, as the method is also perfect for pre-­splitting and smooth blasting, which avoids back-cracking.    ITH drilling offers increased productivity, and is favoured by contractors for production drilling. In larger quarries, the optimum hole size is 110-140 mm. With today’s demands for strict hole control for safe blasting in populated areas, ITH drilling is a popular choice among quarry operators.

deep hole drilling capacity, with constant penetration and no energy losses in joints; and efficient energy transmission, with the piston striking directly on the bit. The COP 34-84 series of hammers was introduced from 1992, and immediately became the benchmark for productivity within ITH drilling. Over the years, the increase in average drilling pressure, from 17 bar to a current market standard of 25 bar, has improved hammer performance, and productivity has increased proportionally to air pressure. The introduction of the Atlas Copco ROC L8 and L6 ser ies of highperformance, high-pressure ITH rigs

Cutaway section of Secoroc COP 64 Gold.

gave another boost to the sales of hammers. The flexibility, productivity and manoeuvr­a­bility of these rigs, when equipped with a COP hammer, makes them the most productive ­combination on the market today.

COP 64 Gold The increase in drilling pressure also had some negative impact on the­internal components of the ITH hammer, as the increased stress promoted the New Secoroc hammer and bit ready for action on an Atlas Copco drill rig.

Quality holes In the hole range 100-254 mm, ITH drilling is the dominant drilling method today. The main features of ITH drilling in this hole range are: excellent hole straightness within 1.5% deviation without guiding equipment; good hole cleaning, with plenty of air for hole cleaning from the hammer; good hole quality, with smooth and even hole walls for easy charging of explosives; Production Drilling in Underground Mining

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risk of premature failures. So, in 1998, Atlas Copco Secoroc decided on a longterm ­strategy to improve reliability, while retaining the benchmark status of the COP 64 ITH hammer. Stage One of this strategy was the development of the second generation six-inch hammer, COP 64.2, introduced in October, 2000, which incorporated newly-designed steel disc spring and lower buffer. Performance was vastly improved, thanks to a drastic reduction in the number of internal failures. It was also possible to rebuild the hammer without diminishing its performance, making it even more attractive. Stage Two was the introduction of the third generation COP 64 hammer, COP 64 Gold, which was unveiled in August, 2001. This version offers sustained performance and improved longevity of the external parts. The COP 64.2 resolved internal component reliability, while the COP 64 Gold has experienced a dramatic drop in the number of cylinder failures. COP 64 Gold also boasts improved sustainable efficiency, maintaining an average of 96% of original performance throughout its service life, which is a further improvement on COP 64.2. Durability improvements, thanks to the higher tensile strength of the new steel grade, are especially noticeable when the cylinder approaches minimum thickness limits. COP 64 Gold enjoys a greater durability margin than its predecessor. With the introduction of COP 64 Gold, hammer life will increase s­ ubstantially. Less internal and ­external wear, together with a reduced minimum cylinder wear limit, are key contributing factors. The hammer is virtually main­ tenance-free, with no need for an econ­ omy kit in most applications. Ultimately,



COP 64.2 steel COP 64 Gold steel Improvement

Yield point ReL(Mpa) Breaking strength Rm(Mpa) Hardness (HRc)

700 1000 32

1400 1950 42

100% 95% 31%

Table 1 reveals not only that the yield point for the new steel grade is twice as high, but also that breaking strength has been almost doubled.

Table 1 Comparison of COP 64.2 and COP 64 Gold steel.

this means customers can look forward to increased drill rig availability. The sum total of these improvements shows COP 64 Gold to have more than 50% greater service life, in abrasive rock conditions, than its ­predecessor. The customer benefits from lower cost/metre drilled, thanks to less downtime and greater abrasion ­resistance, and 30-50% longer life of external parts. Higher availability results from less breakage in the threads of top sub and chuck-ends of the cylinder, and there are fewer stoppages for service and maintenance. Improved penetration rate and higher efficiency are a result of reduced friction of the piston, and a greater life cycle penetration rate is the overall reward. To sum up, the customer can drill more holes per hammer than p­ reviously.

Applications COP 64 Gold is a high-pressure hammer, where performance is related to air pressure. A lower limit of 12 bar for deep hole applications is a good rule of thumb. The hammer is designed for the same types of application as COP 64.2, with special focus on high-pressure applications. In abrasive formations, performance will be up to 50% better than COP 64.2, in what is an ideal application for COP 64 Gold.

In soft unconsolidated rock drilling, the 12-spline chuck concept and the improved durability make COP 64 Gold the perfect hammer. High pressure yields higher productivity, and drilling pressures of 28-30 bar are not unusual. The COP 64 Gold hammer concept offers customers a tool to meet the most exacting requirements.

Hammer cylinder The new cylinder has been redesigned in a number of important ways. COP 64 Gold boasts a cylinder made of low alloy wrought and toughened steel, a new grade with a higher combined Molybdenum and Vanadium content (4.8%) than its predecessor. The result is greater impact strength and higher wear and temperature resistance. All in all, this means greater resistance to breakage, impact, temperature and wear for the new hammer cylinder. Thanks to the new steel grade, cylinder properties have been greatly improved. Wear has been reduced, both internally and externally. Cuttings and moving parts no longer cause the problems they once did. In effect, the service life of the cylinder has been extended con­siderably. The new steel grade possesses greater tensile strength, which means the minimum wear limit can be decreased from an overall cylinder diameter of 132 mm, to 130 mm.

Secoroc COP 64 Gold.

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Production Drilling in Underground Mining

Talking Technically

Total improvement Due to wear resistance Due to wear limit change Due to less cylinder failure

Increase in service life of COP 64 Gold, which has a 50% longer life than its predecesssor.

The result is a hammer that maintains performance far longer than its predecessor, while being, in effect, maintenance-free. Longitudinal milled slots have replaced the circular undercut found in COP 64.2. The piston now enjoys 100% guidance throughout its stroke, as op­posed to the older undercut that let it partially move freely at the end of the downward stroke. Thanks to these slots, wear on the porting edges of the cylinder undercuts and piston has been eliminated. That means air leakage is down to a minimum, and so are noise levels!

The polygon-shaped piston provides a ten-point guide system, while retaining excellent force on the bit. It is sturdier than its forerunner, fitting hand-in-glove with the milled slots to provide superior guidance and airflow all the way through the hammer. The QL 60-style chuck, together with a 12-spline bit, add up to a stronger bit shank. This is especially useful in soft and unconsolidated rock conditions, where bits tend to move axially in and out in the chuck during drilling. This may lead to greater ­f riction between chuck and splines, causing premature spline wear. Furthermore, the increase

in the number of splines, from eight to twelve, leads to greater surface contact between bit and chuck, lessening stress on the splines. The high demand for COP 64 Gold hammers, particularly in applications where performance and reliability are major considerations, has led Atlas Copco Secoroc to add the COP 54 Gold to this increasingly successful range.

Leif Larsson and Patrik Ericsson

Results of comparative tests with COP 64.2 and COP 64 Gold. The COP 64 Gold drilled 50% further.

16 000 14 000 Drill metres

12 000 10 000 New Material Old Material

8 000 6 000 4 000 2 000 0 146 145 144 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128

Cylinder OD (mm)

Production Drilling in Underground Mining

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Simba M6 C-ITH.

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Tuning up your drilling system Optimum combination of factors Choosing the right rock drilling tools and adjusting all the settings in the drilling system can boost performance and cut costs, but it’s not always easy. To discover the optimal combination, a customer can compare test results step by step – or use rock drilling simulation such as Atlas Copco’s Diarot package.

Complex parameters A rock drilling system is complex and many parameters decide its performance. Taking into account the rock characteristics, these parameters include: • bit diameter, design and button type; • type of flushing media used; • drill rod type and geometry; • piston mass and geometry; • the frequency and velocity of the rock drill impact piston; • rotation speed; • feed force. To get the most out of a drilling system, all these factors must work in harmony. The system should also match the overall excavation method. This means that fragmentation for loading and crushing is another ­consideration.

The bit that counts A combination of drill bit, drill rods, shank adapter, rock drill and drill rig determine the performance of the rock drilling system, and this is an area in which Atlas Copco has considerable knowledge. Here we want to focus on the drill string, i.e. the drill bit, rods and shank adapter. Three parameters should be considered when choosing a drill bit. They are: • Penetration rate • Hole straightness • Service life In 95% of all percussive rock drilling, a button bit is selected to drill

Figure 1: Ballistic buttons (left) and spherical buttons: The ballistic buttons are generally considered the best choice for most rock drilling applications.

the hole to a given diameter. The bit’s ability to penetrate the rock efficiently depends on how well the contact between the surface of the buttons and rock is established, their buttons’ shape and number, the bit’s flushing characteristics and the brittleness, or drillability, of the rock. Tests have shown that the relatively smaller contact surface and the larger protrusion of the ballistic button help to break the rock more efficiently giving higher penetration rate than the spherical button (see Figures 1 and 2). Figure 2: How the buttons bite: Under the same impact energy the ballistic button will penetrate deeper into the rock, since it has a smaller contact area (footprint) than the spherical button.

Production Drilling in Underground Mining

This efficiency also gives the best hole straightness and we recommend ballistic button bits for most applications. Additional reasons are: • The larger protrusion makes it easier to clean the hole, leaving the bit to deal with ‘fresh’ rock, thereby avoiding secondary ­crushing. • Atlas Copco Secoroc’s patented grinding system, using a profiled diamond grinding wheel, maintains the performance of the ballistic button by restoring its original profile, which is essential for optimum penetration rate and service life (Figure 3). However, spherical buttons are still preferred in certain types of hard and

Additional Penentration

37

Talking Technically

Figure 3: Bit grinding shop.

abrasive rock formations, where they can have a superior service life.

Perfect partner The design of the drill bit, especially the number, placement and shape of the buttons, makes it the perfect partner for the rock drill and its percussive energy to press the buttons into the rock. If the power of the rock drill is insufficient, or the buttons are worn too flat, the penetration rate decreases and hole deviation increases. In addition, the risk of damaging the buttons increases with the size of the wear flat. There is also a risk of drilling with non-tightened couplings due to lack of rotation torque, something that leads to short drill steel life. Using the Diarot rock drilling simulation system Atlas Copco is able to simulate the performance of different drill bit designs, using data from a worksite or from its extensive database.

Figure 4: Extension rod joints must be kept tight during drilling. Loose joints cause overheating and energy loss, drastically reducing efficiency.

After the button bit, we should examine the drill rods and shank adapter. The task is to transfer the rock drill piston’s energy through the drill string and drill bit into the rock. The COP 1838 hydraulic drill piston impacts on the drill string 50–60 times a second and, each time, the buttons penetrate 0.5–1.5 mm into the rock. If the design and setting of the drilling equipment is matched to the rock, energy transmission will be nearly optimal and this, in turn, will affect the service life of the drill string ­positively. When the piston in the rock drill strikes the shank adapter the kinetic energy of the piston is converted into a compressive stress wave, which travels through the drill string and into the rock and breaks it. In a well-tuned rock drilling system, most of the energy in the stress wave is being ­utilized to break the rock. In a ­mismatched drilling system, some of the energy in the stress wave will be reflected and returned back up the drill string as a tensile stress wave. Tensile stress waves are much more detrimental to the drill string in comparison to compressive stress waves. The drill string’s joints must be tight enough for energy transmission to be fully effective. Loose joints result

Figure 5: Secoroc Speedrods and MF drill rods.

in energy loss and drill string failure (Figure 4), which can be simply detected by measuring the ­temperature on the coupling.

Rigid rods pay off There are different types of rods in the Atlas Copco Secoroc range and we recommend the Speedrod, with integrated couplings for extension drilling (Figure 5). A drill string with Speedrod gives faster penetration than one with extension rods and couplings, as less energy is lost at the joints. Furthermore, the Speedrod’s threads are easy to keep tight during drilling, giving very ­efficient energy transmission. Drill rods must be selected to suit the entire system. The largest possible rod diameter for the hole dimension is recommended. A larger-diameter rod has a longer service life (because of less stress per unit area – sq mm) and because it transmits more energy per blow. Furthermore, large rods are also more rigid and, in the same way as TDS guide tubes, will give straighter holes and better blasting results. Finally, to make the whole system work as efficiently as possible, the drill rods must also suit the rock drill, its piston and shank adapter.

Alf Stenqvist

38

Production Drilling in Underground Mining

Talking Technically

Computer based training for rock drilling tools Latest version Atlas Copco Secoroc recently introduced version 4.0 of its Computer-Based Training (CBT) package as being of paramount importance in achieving the highest level of competence in rock drilling tools among distributors and customers, as well as its own sales force. Correct understanding of how to choose, use and maintain the rock drilling tools affects profitability for all, and adds to competitiveness. Atlas Copco Secoroc believes that the CBT package for rock drilling tools is the most comprehensive interactive training tool available in the industry today.

Expert knowledge The course is based on the skills and experience gained by key Atlas Copco Secoroc personnel over many years, and conveys expert knowledge in the use of modern rock drilling products. CBT Rock Drilling Tools version 4.0

Main menu. This is the first picture shown when you start the CBT. From this main menu you can choose which of the courses you would like to enter.

was released after six years of patient development.

Course menu. View picture for the course Raise boring. Under the text “Introduction” you find two buttons, “Learning objectives” will explain what you are expected to learn. “Introduction” will give you an overview by running pictures and a speaker talking. Under “Lessons” you choose chapters.

Production Drilling in Underground Mining

Computer based training transfers knowledge about drill string products and their use, in a simple and efficient way. Aided by 3-dimensional animations, photographs, film sequences and interactive lessons, the training course explains how the market’s leading drill string products can increase both productivity and profit. With version 4.0, CBT now includes training on Atlas Copco Secoroc products, with: separate packages divided into tophammer, ITH and raise-boring; separate libraries for drilling equipment and applications in all packages; updated product training section on tophammer equipment including troubleshooting, bit grinding, and care and maintenance; product training section on ITH equipment including troubleshooting, bit grinding, and care and maintenance; product training section on consumables for raise boring equipment, including care and maintenance; focus tests on each lesson; and a new section of product selection exercises. 39

Talking Technically

Chapter. In this section you choose the lesson you want. In the lower right corner you find four buttons. ”X” will finish the actual step. Number two will take you back one step. The third button allows you to scroll through the course.

Lesson. There are three buttons for presentations. Video camera button: running pictures and speaker text. Photo camera button: pictures from more important or difficult parts. Text button: pictures and text.

Step player. When pressing the step player button you will find film sequences or animations. At the end of every lesson you can also go through a test, “Focus test”, to check your knowledge.

Product selection exercises. At the end you also have the possibility to go through some “real” exercises, where you will have the background for a specific rock excavation and from that choose suitable equipment to do the job.

Complete training The whole Secoroc CBT Rock Drilling Tools package comprises approximately 50 hours of lessons and tests. With a recommended maximum of four hours of lectures per day, the total length of a complete training course on rock drilling tools can be estimated at three weeks. CBT enables efficient training whenever the need arises. For instance, a 40

new employee can start the learning process right away, and learn about how the product is manufactured, its characteristics, wear limits, and much more. A modular structure enables users to study lesson by lesson, or in a selective way at their own pace. With personal computers, learning can take place whenever and wherever the individual chooses, including in the field. The training package teaches you to find the right tool for any given rock

drilling application at any time of the day. Experience with CBT version 2.0 resulted in good market acceptance of version 3.0, which has been successfully advising both key customers and technical schools. The new version of CBT 4.0 is expected to contribute further to the added value in Atlas Copco Secoroc sales service.

Björn Samuelsson

Production Drilling in Underground Mining

Talking Technically

The economic case for routine bit grinding Cutting hole costs The button bit was originally developed to do the job of an insert bit, without the necessity for frequent grinding. However, it was soon found that the service life of a button bit increased considerably if the cemented carbide buttons were ground.    Nowadays, it has become extremely important to grind button bits at proper intervals, in order to extend the service life of the rock drilling tool, maintain penetration rates, and drill straight holes.    In all rock excavation operations, the cost is usually ex­pressed in cost per drilled metre (cost/dm), in cost per cubic metre (cost/cu m), or in cost per tonne.    The cost to produce a hole depends on how fast it can be drilled, and how many tools will be consumed. The cost to produce a cubic metre of rock is dependent upon the cost of the hole, and the cost of blasting. If the blasthole is of poor quality, then more explosives will be consumed in blasting the rock. Unsharpened bits very often give a poor quality hole with deviation.    Grinding constitutes around 2% of the costs of the entire drilling operation. To run the business without grinding could multiply this cost, with up to 100% added when production losses are taken into account. Labour and material are the highest costs, while the machine investment cost is low when ­u tilization is high, with a large number of bits to be ground.

The Secoroc Grind Matic BQ2 grinding machine can handle drill bits up to 127 mm in diameter.

throughout its life, maintains the correct button shape and pro­t rusion. It features correct centring on all buttons, producing a high quality cemented carbide surface, with no risk of cemented carbide nipple. Long bit life, and higher penetration rates, will result from good grinding quality. Disadvantages of using the grinding cup are that it may produce an incorrect button shape and protrusion. It is difficult to centre the grinding cup over the gauge button, and there is also a risk of producing a sharp cemented carbide nipple on the button, and a possibility of scratches due to the larger diamond grain used. Reduced bit life will result from poor grinding quality. Several tests have been carried out to find which method gives the best bit performance. The grinding wheel gives the correct shape to the button, regardless of the amount of wear on the wheel, ensuring that the bit will achieve

Diagram 1: Typical bit life grinding at different intervals.

700

Total bit life drill metres

600

10 regrindings per drill bit

500 400 300

Grinding methods There are two different methods of bit grinding to restore the buttons. The preferred method uses a diamond coated profiled wheel, and the other, a grinding cup. The profiled wheel provides a smooth and efficient grinding oper­ation, which, Production Drilling in Underground Mining

200

Grinding interval drill metres

100 0 10

20

30

40

50

60

41

Talking Technically

and circulate in the hole, causing secondary damage to the buttons. When a bit doesn’t show any vis­ ible wear flat, it may be suffering from micro cracks on the cemented carbide surface. This is known colloquially as snakeskin, and can be clearly seen when using a magnifier. In this case, the surface has to be ground away, otherwise the micro cracks lead to more severe damage on the buttons. Likewise, buttons which protrude too much must be ground down to avoid damage (Diagram 2).

Penetration rate

Diagram 2: Risk of total loss when a bit is overdrilled.

standard penetration rate throughout its entire life. It has also been shown that bit life is increased considerably when grinding wheels are used, rather than grinding cups. Wheels also excavate steel around the button, simplifying the grinding task, and giving the bit a more exact profile.

There is always a sharp edge created on the button, and this becomes sharper the more the bit is overdrilled. This sharp edge, especi­ally on ballistic buttons, is very brittle. Once the edge cracks, pieces of cemented carbide break away

When the right bit has been chosen for the rock condition, it will provide maximum penetration rate, along with acceptable hole straightness. In rock conditions like Swedish granite, with a compressive strength of around 2,200 bar, the bit gets a wear flat after just 10-20 drill metres, accompanied by a small drop in penetration rate. When it has a wear flat equivalent to one-third of the button diameter, the penetration will have dropped by 5%. If the bit is used further until it has a two-thirds wear flat, the penetration will have dropped more than 30% (Diagram 3).

Diagram 3: Penetration rate drops as the button profiles flatten.

Bit life With so many parameters involved, it is difficult to estimate bit service life. First, a proper grinding interval must be established, preferably at the stage when the button has a wear flat of one third of the button diameter. When the number of drilled metres to reach this stage has been established, then a calculation of bit life can be made, by multiplying by the number of times it can be reground. As a general rule, a bit can be reground 10 times, but smaller bits may achieve slightly less than this figure, while larger bits may achieve more. So, if the grinding interval has been established as 60 drill metres, then the average bit life will be 660 drill metres (Diagram 1). If a bit is over drilled, and the wear flat is more than half of the button diameter, there is a tendency towards cracked buttons. 42

Production Drilling in Underground Mining

Talking Technically

9 8 7

Labour cost

6

Grinding material cost

5

Machine cost

4 3 2

Annual grinding volume – buttons

100 000

75 000

50 000

25 000

show cost per button in SEK. 10 000

Figures on the left side of the diagram

0

5 000

1

Cost of grinding reduces dramatically with volume.

When a bit has a heavy wear flat it tends to deviate, and, by the time it reaches the bottom of the hole, it will have deviated far more than planned. As a result, the blast will produce coarse fragmentation, and much secondary blasting may be required. In slope hole drilling, it is of utmost importance that the holes are straight. If the holes deviate, the slope walls will be uneven, making rock reinforcement more difficult than expected. Rock formations with different layers and joints are often characterized by heavy hole deviation, putting extra stress on the remaining rock tools in the drillstring. A sharp bit always cuts better, and will prevent both deviation, and its disadvantages.

Grinding machines Two parameters guide the selection of the right grinding machine: the number of bits to be ground; and whether the machine should be portable or stationary. Several kinds of grinding machines are available to satisfy these parameters. In most cases, a simple machine will suffice for a small operation, grinding only a few bits. The semi-automatic machines are more suitable for larger operations, such as mines and construction sites, where the machine can be stationary, and the rocktools can be brought to it. Grind Matic HG is a water or aircooled handheld machine for grinding cups. Both spherical and ballistic cups

Diamond grinding wheels.

Production Drilling in Underground Mining

are available. The machine is driven by up to 7 bar compressed air, and is suitable for a small grinding operation. Grind Matic Manual B is an airdriven portable grinder using diamondcoated grinding wheels for spherical and ballistic buttons. The machine is mounted in a box fitted with wheels and handles for easy set up. It is mainly for threaded button bits, but small downthe-hole bits can be ground in this machine. A steel spring is mounted in the profile of the grinding wheel, where it functions as a centring device, allowing for easy grinding. Grind Matic Manual B-DTH is similar to the Grind Matic Manual B. It is mainly intended for in-the-hole bits, but can also be used for threaded bits with a special bit holder. As an optional accessory, the machine can be equipped with a belt grinder for gauge grinding. Grind Matic BQ2 is the latest semiautomatic machine, with many features such as auto-indexing device, timer control, automatic feed, and an automatic centring arm. These features, coupled to an ergonomic design, ensure high productivity, and the machine is designed to handle large volumes of threaded button bits. Cooling water is recycled after the waste product has been separated in a container. Grind Matic BQ2-DTH is the latest grinding machine for mainly downthe-hole and Coprod bits. It can also

Grind Matic Manual B.

43

Talking Technically

Grind Matic Manual B-DTH.

be used for threaded bits with a special bit holder. The machine has the same features as Grind Matic BQ2, and can grind bits up to 7 in diameter. Comparison of grinding wheel with grinding cup.

Grind Matic BQ2-DTH.

Grinding advice The Grind Matic machine’s secret of success is that both the grinding table

and the diamond grinding wheel rotate. The result is perfectly ground button surfaces, regardless of whether the buttons are spherical or ballistic. In addition, the machine’s unique diamond grinding wheel is designed to ensure even wear on its grinding surface, while still retaining its profile. This, in turn, guarantees the button shape throughout the life of the wheel. Secoroc’s advice is to use Grind Matic grinding machines, with profiled diamond grinding wheels, for grinding button bits. It is the only solution able to consistently deliver perfectly shaped buttons on customers’ bits. Correct grinding is important for every drilling operation, particularly in these days of cost consciousness and fierce competition. It can make a world of difference to the bottom line.

Bo Persson

44

Production Drilling in Underground Mining

El Aguilar, Argentina

Exploring the potential of El Aguilar Keeping in touch In the remote mountain range of northern Argentina, the El Aguilar mine is being equipped with modern technology to meet ambitious goals. Located 4,300 m above sea level, and surrounded by desert and mountains, the mine is remote and difficult to reach. However, to run the country’s mos t impor tant underground zinc, lead and silver mine, El Aguilar management keeps well in touch with the benefits of new technology.

Pioneers The mine, which lies in the eastern slope of El Aguilar mountains, is owned by Compañía Minera Aguilar S.A. (CMA), which also owns Sulfacid S.A., a refinery pioneer in the sulphuric acid and electrolytic zinc industry. Here, in this isolated but unique mining community of about 4,000 people, 350 work in the mine in three, 8 hour shifts per day. Production currently runs at 38,000 t/ month, and the mine’s short term goal is to increase this to 48,000 t/month. Operations are widely dispersed over a large area, and several fronts are worked simultaneously. Therefore, all equipment has to be used as efficiently as possible. The Aguilar orebody has great potential. Even though it has been mined for more than 70 years, new sectors are now being discovered. Furthermore, the company has significantly changed its strategy in recent years with regard to the equipment it needs, and also in terms of greater emphasis on exploration. In order to reach its goals, CMA employs a fleet of eight Atlas Copco Boomer 104 and Boomer 281 drill rigs, one Boltec 235 bolting rig, one Simba 157 production drilling rig, nine Scooptram loaders ST6C, EST 3.5, ST710 and ST2G,

The El Aguilar mine is located at 4,300 m above sea level and surrounded by mountains and deserts.

and three core drilling rigs Diamec U6, Diamec 252 and Diamec 262. Many of these products have been acquired with the assistance of longterm financing arrangements provided by Atlas Copco Customer Finance that have been consistently offered despite a difficult economic situation within the country.

Exploration and development The CMA mine is divided into three main sectors, according to the degree of mechanization employed and the grade of the ore. These are Pique Inferior, which is the deepest at level 31; Mina Esperanza; and Nueva Norte, which is in itself divided into two parts, Mina Rincón and Mina Oriental. In Pique

Production Drilling in Underground Mining

Inferior, the aim is to go deeper and a new raise has increased mineral resources. Mina Esperanza has been accessed via the lower drift on the third level as the higher levels are gradually exhausted. Given the shape of the orebody, which has a dip of more than 50 degrees, the entire operation will use only cutand-fill or long hole stoping methods. The Boomer 104 is used for face drilling, while the Simba 157 is used in production to drill the 18 m high stopes. For safety reasons, the LHDs are operated by remote control. In Nueva Norte, particularly in Mina Oriental, the miners are only a few metres from the orebody and an 89 m deep ventilation shaft has been raise bored. In this section, the main mining method is cut-and-fill. In faces of cross-section 4.5 m by 4.5 m they drill around 50 holes 45

Exploring the Potential of El Aguilar

The Simba H157 at work.

45 mm diameter and 14 ft long. At present, El Aguilar is 95 percent mechanized and several of the latest methods of excavation are being employed, some developed on site. These methods in-clude: room and pillar with bench and fill; conventional cut-and-fill; cut-and-fill with horizontal

and vertical chambers using long hole drilling, and muck-ing out with remote control vehicles and other variants; sublevel stoping, underground vertical/ sub-vertical benching; and exploration methods for deep levels. In December, 2004 a shaft was constructed in Mina Esperanza exclusively

Typical drill patterns at El Aguilar.

CABLEBOLT DRILLING Rows of 5 holes every 1.5 m

� 46

Pillar of the community On the surface, the El Aguilar mine provides for the well-being of the whole community. The town relies completely on the company for its fresh water and electricity supplies, as well as for its well-equipped 40-bed hospital, its schools, stores, churches, sports and cultural and other facilities. A private transport company provides transportation between the mine and the nearest densely populated cities of La Quiaca and San Salvador de Jujuy. The company is not just a business, it also has a strong social responsibility.

Acknowledgements

� PRODUCTION DRILLING Rows of 7 holes every 1.5 m

to generate ventilation from the tunnel to level 577, the equivalent of 110-115 m. With this new method, all the air enters via the tunnel, flows through the entire sector, and is extracted via the shaft. In addition, an exhaust fan was placed in the entrance of the mine to extract the air and distribute it to different underground sectors. The installation of a ventilation shaft in Pique Inferior will allow fresh air to enter the lower levels. El Aguilar has one of the world’s highest proportions of support elements in relation to tonnage produced, which indicates the complexity of the orebody. The ground is very varied, irregular, and dominated by fractures or faults. In addition, El Aguilar has devised an advanced ground control method which has served as a model for operations in remote places around the world. The drifts generally have roofs of very poor quality rock with consistent faults, although the floors are generally of good quality. This makes it necessary to employ a range of bolting techniques for different types of rock bolts, from short bolts such as split-set or Swellex, and cement grouted rebar. Cable bolting with the Boltec 235H, shotcreting, and steel arches are also used to good effect.

1 1

5 7

Atlas Copco is grateful to the management at El Aguilar for its assistance in the preparation of this article. This article first appeared in Atlas Copco Mining & Construction magazine No 2 2005. Production Drilling in Underground Mining

New South Wales, Australia

Increasing drilling rates at Ridgeway Big output A determination to benefit from drill rig automation technology can be seen in practice at Newcrest Mining’s Ridgeway gold-copper operation, a mine that has already produced impressive performances in terms of profitability and production. The mine is one of Australia’s largest underground mines with a total ore production of 5.6 million t/y. Located near Orange in Central New South Wales, near the well-known Cadia Hill open pit mine, Ridgeway has only been in operation since 2002. In April, 2005 the mine switched from contractor to owner mining. Looking to further increase the productivity of their two Atlas Copco Simba L6 C longhole production drill rigs, the management has introduced a higher level of automation, resulting in improved drilling rates with the same manning and equipment.

Sub level caving The Ridgeway deposit, discovered in 1996, lies 500 m below the surface and is accessed by a decline. Extraction of the gold-copper ore began in 2002, and in 2004 the mine produced almost 450,000 ounces of gold and 45,000 t of copper. Production is by sub level caving, commencing at the top of the orebody, with extraction levels at 25 m vertical intervals. Today, 5.6 million t/y of material is mined, and Ridgeway is recognized as one of the most efficient gold producers in operation, with sufficient mineable ore reserves to last until 2018. Having successfully used singlehole automation for several years to drill during shift changes and breaks, Atlas Copco’s Advanced Boom Control (ABC) fan automation technology was selected to further enhance this capability. Ridgeway has two Atlas Copco Simba L6 C production rigs continuously employed on drilling upholes, one of which is currently fitted with the

Atlas Copco Simba L6 C production rig fitted with ABC Total for computerized operation.

ABC system, an automation technology that is well-suited to the application. However, a low-cost option was required to deliver extra drilling capacity, and the management decided that ABC Total had the potential to give a productivity improvement of up to 10%. As a result, the first Simba was equipped with ABC Total for appraisal, and then the second Simba was automated and fully functional by March, 2006.

Fully automated The ABC Total version of the Atlas Copco technology employed at the Ridgeway mine fully automates the drilling process. The boom and feed are positioned automatically according to a pre-programmed drill pattern and drilling sequence. Automatic collaring, rod changing and drilling of each hole in the sequence are then carried

Production Drilling in Underground Mining

out without direct involvement of the operator. The need to manually change bits during the drilling of some long holes, or between holes, had been a major hurdle for the mine to overcome in its drive to fully automate production and development drilling processes. This is the first time that a mine in Australia has used a mechanized bit changing system in conjunction with the rig automation technology. The bit carousel rotates, allowing drill bits to be removed and replaced without operator intervention. This process is activated by the Atlas Copco Rig Control System, RCS, which is an integral part of the automation package.

Continuous drilling Ridgeway’s use of the ABC and bit changing systems marked a significant 47

increasing Drilling Rates at Ridgeway

How the bit changer works A

B

Figure 1. All the rods from the drill string are moved over to the magazine of the Simba (see insert, left). The rock drill advances to the drill steel support (A) to collect the worn bit on its shank adapter. The rock drill then moves backwards to the bit changing position. The drill bit cassette swings in to collect the bit. A

Drill steel support

Rod magazine Bit cassette

The Simba bit changer allows drill bits to be removed and replaced automatically.

point in the adoption of such advance automation technology by theAmining industry in general. Automation and associated performance monitoring and control technology are the key to harnessing all the power that can be generated with modern rock drills. While RCS technology is well established, the recently developed Atlas Copco bit changing system opens the door to full automation of continuous drilling sequences and processes for many mines. Current drilling technology is so advanced, with electronic systems able to monitor, measure and relay thousands of bytes of performance data per minute, that adjustments can only be made by a computerized control system. 48

B

Figure 2. The worn bit is unthreaded from the shank adapter and retained in the rotating cassette by a locking arm (B). The rock drill then moves backwards.

Rock Drill

The next step at Ridgeway would be to take advantage of Ethernet, or even wireless communications technology, in order to download drill plans from mine planning offices to drilling equipment, and transfer proB to the main comduction data back puter. The operator would be able to see how accurately he has been drilling, and make any necessary adjustments almost immediately.

Acknowledgements This article first appeared in Atlas Copco Mining & Construction magazine No 1 2006.

Figure 3. The cassette rotates to align the new bit with the rock drill. The rock drill then moves forward to collect the new bit. The drill bit cassette swings aside, allowing the rock drill to move forward and place the new drill bit into the drill steel support. The first drill rod is then loaded from the rod magazine and drilling can begin again

Production Drilling in Underground Mining

Campo Formoso, Brazil

Sub level caving for chromite In search of excellence Cia de Ferro Ligas da Bahia (Ferbasa) is a private capital group, which produces chromite, silicon and limestone. One of Brazil’s most important metallurgical companies, Ferbasa has surface and underground mining operations in the state of Bahia in north-eastern Brazil, where their Pedrinhas open pit chrome mine, located in Campo Formoso, has been in operation since 1961. Pedrinhas currently produces about 2,400,000 cu m/year of chromite ore and waste, yielding 54,000 t/year of hard lump chromite and 114,000 t/year of chromite concentrate. At the Medrado and Ipueira underground mines, lump chromite is produced using primarily sublevel caving techniques with raises opened using slot drilling, where a fleet of Atlas Copco equipment offers key support in exploration, development and production.

Underground geology Located in the city of Andorinha, around 100 km from the Pedrinhas mine, the company’s underground operations have been developed within the Medrado/ Ipueira deposit. This is one of several chromite-mineralized intrusions in the Jacurici Valley in the north-east of the São Francisco Craton, which hosts Brazil’s largest chromite deposits. Being irregular and fractured with numerous faults, the deposit presents a considerable geological and mining challenge. The Medrado/Ipueira deposit is divided into several mining areas. There are the Medrado mine and the Ipueira mine, the latter of which is divided into five working areas: Ipueira II, III, IV, V and VI. Currently, besides Medrado, only Ipueira II, III, IV and V are operational, whereas Ipueira VI is a future expansion project. The underground mines have been in steady operation since 1977. In 2004, Ipueira produced 450,000 t

Entrance to the Ipueira mine.

of run-of-mine ore for a final production of 127,000 t of hard lump. In the same year Medrado produced 192,000 t of ROM ore for a final production of 48,000 t of hard lump. Current target is a total of 216,000 t of hard lump.

Underground exploration The company is always looking for the best way of doing things in consultation with workers, technical consultants and through visits to other mines. The consultation process also includes manufacturers of mining equipment, with which Ferbasa discusses the best technological options for its operations. This consultation process is very important for the mine, in order to help maintain a high level of modernization. From a geological point of view, the Medrado/Ipueira orebody represents a challenge. With an average thickness of 8 m, and 500 m long panels, the orebody is irregular and fractured with numerous faults. The accurate delineation of the orebody is very important, and to this end the geology department has to carry out a great deal of exploration drilling. The main machine employed in this key task is an Atlas Copco Diamec U6 exploration drill rig equipped with

Production Drilling in Underground Mining

an operator’s panel. This machine is used in all situations at the underground mine, to drill holes of up to 150 m deep. The decision to acquire this machine took into account the fact that it is equipped with a wire line system. This feature makes possible to conduct core drilling in the worst rock conditions, such as the faulted and fractured rock at Ferbasa. Ferbasa carries out about 7,200 m/y of drift development. The fleet of development rigs includes two Atlas Copco face drilling rigs. One is a Boomer 252 rig equipped with COP 1238 rock drill which drills 3.9 m long holes to achieve 6,000 drilled metres/month at a productivity of 55 m/hour. There is also a Rocket Boomer M2 D rig equipped with COP 1838ME rock drill which drills 4.5 m long holes to achieve 12,000 drilled metres/month at an average rate of 70 m/hour.

Sublevel caving The main underground mining method employed is longitudinal sublevel caving, though open stoping is also used in some areas of Ipueira, depending on the layout of the orebody. When the orebody is vertical, sublevel caving is used 49

Production loading

N 55

Production

Sub level caving for chromite

Charging – production holes

N 65

Production drilling

N 75

Mucking out

N 85

Development

Charging

N 95

Scaling

N 105

Drilling

N 115

Shot creting

N 125

Layout of Ipueira mine.

and, in the few cases when the orebody is horizontal, open stoping is the preferred method. Both methods are safe, with currently acceptable dilutions. However, the management has started looking for suitable alternative methods that will reduce the dilution in future. For longitudinal sublevel caving, production drifts are developed in the footwall

of the orebody. The vertical distance between sublevels varies from 14 m to 30 m. Production drilling is upwards, using a fan pattern. The broken ore is loaded using LHDs, and is hauled from the production levels to the surface using rigid frame trucks. In terms of production, the company drills 180,000 m/year of production

blast holes, which have a diameter of 51 mm and a burden of 2.2 m. At the same time, they are studying the possibility of changing to 76 mm diameter holes and 2.8 m burden, in order to reduce costs. The fleet of production drill rigs includes an Atlas Copco Simba 254 and a Simba 253, both electro-hydraulic

The locations of drifts and drill patterns are adapted to the ore-waste boundaries.

Blast holes

Cable

Ore

Waste

Drift 2.2 m

50

Production Drilling in Underground Mining

Sub level caving for chromite

Slot drilling at Ferbasa: the Simba M6 C-ITH in action and right the perfectly finished row of holes.

rigs equipped with COP 1238ME rock drills, which drill 6,000 m/month to achieve a productivity of 22 m/h. The mine also has a Promec M195 pneumatic rig equipped with COP 131EL rock drill. These drill rigs are also used to drill orebody definition holes, and achieve 3,500 m/month.

Slot drilling One of the main challenges at Ferbasa’s underground operations is the development of inverse drop raises. These openings, which are also called ‘blind raises’ because they don’t communicate with the upper level, can only be accessed from the lower level. This limitation is dictated by the mining methods. Previously these blind raises were developed upwards by successive individual

advances of up to 6 m. Nowadays, this practice has been replaced with a fully mechanized method, increasing the speed and safety of drilling the openings. Looking for a solution to improve operator safety when drilling these production raises, technical personnel from Ferbasa visited LKAB’s Malmberget iron ore mine in Sweden, where they studied the development of inverse drop raises blasted in one single shot. After the visit, Ferbasa started employing a slot drilling technique, and Ipueira and Medrado are now the most experienced mines in Brazil in its use. Slot drilling requires a row of 190 mm diameter interconnected holes to be drilled using a special guide mounted on a regular ITH drill hammer. Thus, with an available free face, drilling accuracy, and controlled blasting techniques, openings

The slot drilling crew with their Simba M6 C-ITH.

of up to 25 m in length are successfully achieved. The main advantages of the method are personnel safety and speed in the drilling. Also, slot drilling is more precise and, in general, more productive. A Simba M6 C-ITH drill rig equipped with COP 64 ITH hammer and ABC Regular system, as well as an on-board booster compressor, has been acquired for drilling inverse drop raises with holes up to 10 in diameter. Depending on the length of the raise, and the quality of the rock mass, the slot drilling technique is used. If the length of the raise is short, and the rock quality poor, the traditional technique with reamed holes is used. Until the Simba M6 C-ITH arrived, Ferbasa was carrying out slot drilling with only one machine. They chose the new Simba rig because of its advanced technological and safety features. One of the main advantages is the setup, which only has to be carried out once at each site. The Simba M6 C-ITH drill rig is also easy to operate, and the spacious, airconditioned cabin is an attractive feature. The mine spent five years looking for a solution to the opening of inverse drop raises, and is pleased with its investment in technology and modernization represented by the Simba M6 C-ITH.

Acknowledgements The managements at both Ipueira and Medrado mines are thanked for their contributions to this article, which first appeared in Atlas Copco Mining & Construction Magazine No 3 2005. Production Drilling in Underground Mining

51

Atlas Copco Cabletec LC.

52

Production Drilling in Underground Mining

Michilla, Chile

First Cabletec cable bolting rig in South America Winning in Michilla Cable bolting and grouting operations have been greatly speeded up at the Michilla Copper Mine in Chile with the introduction of an Atlas Copco Cabletec cable bolting rig, the first of its genre to be deployed in South America. Indeed, the cables necessary for securing the production stopes at Michilla are now installed 15 times faster than they were previously. This has released manpower for other work, and improved the overall efficiency of the mining operation. Above all, the Michilla experience is a great reference for this new concept machine, which is set to revolutionize cable bolt installation underground.

Successful operation The Cabletec has been successfully operating for a year in Antofagasta Minerals’ Michilla copper mine in Chile, some 750 km north of Santiago. The main mining method at Michilla is cut-and-fill using a drift and pillar layout in which mining progresses upwards. The production drifts are 7 m x 5 m and the pillars are 7 m x 7 m. Some sub level stoping is also used. Systematic cable bolting is required to ensure safety while other rigs are drilling production holes upwards through the orebody. A total of 100,000 m/y of cable bolts are needed for all the underground operations. During its first year at Michilla, the Cabletec has shown very positive results. Its cable installation capacity is some 50% better than alternative mechanized solutions. It gives a safe and greatly improved working environment, with all operations controlled from the silenced, air-conditioned cab.

Two booms The Cabletec is unique, in that it is a twin boom machine. Positioning and

Drilling and cable installation are carried out simultaneously by separate booms on the Cabletec.

feeding of the grouting hose and cable into the pre-drilled hole is undertaken using one boom, while the other boom is used to drill the next bolt hole. Both operations can be carried out simultaneously, greatly reducing cycle time and increasing functionality. Because drilling and cable installation are carried out by separate booms, there is no risk of cement soiling the drill unit, or splattering components, significantly reducing maintenance costs compared to other mechanized methods.

Production Drilling in Underground Mining

Superior productivity Prior to the arrival of the Cabletec, cables were installed manually, each taking about 105 minutes to grout and install. Today, the Cabletec does it in only 7 minutes, with less interference and using fewer operators, saving valuable time and greatly improving the efficiency of the production operation. The total cost of rock reinforcement is historically USD1.8/t of ore. However, Michilla management estimates that, thanks to 53

Cabletec cable Bolter in South America

Cabletec is a fully mechanized cable bolting rig with the Rig Control System, RCS, for high productivity and precision.

the speed of the Cabletec, about 20% of this cost is being saved. The drilling boom on the Cabletec in Michilla is equipped with a COP 1838 rock drill and a rod-handling carousel with a capacity of 17+1 Speedrods. These are each 1.8 m long, facilitating

hole depths of up to 32.4 m and today they use 63.5 mm drill bits. The 1,700 kg capacity cable cassette at the rear of the rig is easy to refill, thanks to its unique fold-out design. The onboard silo has a capacity of 1,000 kg of dry cement, and auto-

At Michilla four parallel holes are drilled for bolting in each row in the 7 m wide production drifts.

matic mixing is to a predetermined formula, resulting in a smooth grouting process. For face drilling, Michilla has Boomer M2 C drill rigs, as well as Boomer 127 and 282 rigs equipped with 14 ft rods, for an effective pull of 3.7-3.8 m. ANFO is the bulk explosive used. About 800 m/month of drift is developed and 110,000 t/month of rock is mined, of which 40,000 t is waste. Michilla is operating at depths of below 600 m, and produced 46,000 t of fine copper in 2005. Resources are expected to last until 2012, after which production will shift from underground to surface operations.

Acknowledgements The management at Michilla are thanked for their assistance in the preparation of this article which first appeared in Atlas Copco Mining & Construction magazine No 1 2006. 54

Production Drilling in Underground Mining

Garpenberg, Sweden

Innovative mining at Garpenberg Garpenberg Lina shaft

0Z

Garpenberg North

Gruvsjö shaft Capacity: 450 000 tpa

Smältarmossen

Shaft Capacity: 850 000 tpa

Dammsjön

0Z

Dammsjö Agmin ?

400 Z

Lappberget

? 500-785 Z

Finnhyttan

500800 Z

Tyskgården 7001000 Z

800 Z

Kanal Ore Strand Ore Potential

Kaspersbo

910 Z

Dammsjön Kvarnberget 2000 Y

Gransjön 800 Z

870 70 Z

925-1100 Z

?

1200 Z

1600 Y

400 Z

2400 Y

2800 Y

3200 Y

1000-1300 Z

11001400 Z

3600 Y

4000 Y

4400 Y

1200 Z

4800 Y

5200 Y

Production levels Potential areas outside ore reserves 2005-01

One million tonnes of ore The Garpenberg mine, located 200 km northwest of Stockholm, extracts more than 1 million t/y of ore. The ore is polymetallic and contains mainly zinc, silver and also some lead, copper and gold. Additionally, about 500,000 t of development waste is excavated annually. Over recent years, Garpenberg has been forced to add reserves, or reconsider its future. Happily, more orebodies have been discovered, and new stoping methods and drilling technology introduced. Atlas Copco has cooperated closely with Garpenberg management to resolve technical issues, designing and supplying equipment to suit the evolving objectives. As a result, the mine achieved its Mt of ore in 2005, at very acceptable grades.

Idealized long section at Garpenberg showing all orebodies and shafts.

AB Zinkgruvor developed a new main shaft and concrete headframe and the adjacent concentrator. Boliden acquired the mine in 1957 and completed the development of a second shaft in 1972, accessing the 800 m level at Garpenberg North, having a hoisting capacity of 850,000 t/y and effectively creating a second and larger mine. Between these two shafts, the company located another orebody under the Dammsjön and, in the 1980s, considered draining the lake in order to develop an open pit. The mineralization in the Garpenberg area occurs in a long, narrow synclinal structure which is believed to be Middle Precambrian, but may have been remobilized later. The orebodies are vertically extensive lenses that are usually narrow, much folded and therefore twisting and irregular.

History

Cut and fill

Mining has been conducted at Garpenberg since the 13th century. The present operations started in 1950-53, when

Until very recently all of the ore, subdivided in 100 m-high slices, was extracted by cut-and-fill mining, taking

Production Drilling in Underground Mining

5-6 m thick slices drilled horizontally from 50-300 m long and up to 15 m wide stopes. Rock fill was used in the bottom cut, and either plain sand or cemented hydraulic fill above. The sand comes from the coarse fraction of the mill tailings, and the fill is supplemented by development waste. Mining starts normally at the centre of the base level of the stope and progresses towards the ends and upwards. The last cut, just below the crown pillar, is heavily reinforced to facilitate the recovery of the 8-15 m high pillar using up holes drilling and blasting. The undercut-and-fill method, progressing downwards, was used in the Strandgruvan section from the mid-70s until 2001, when the ore was mined out. This method provided a safe working roof in the weak, fractured ore with unstable footwall, for just the extra cost of cement and rebar reinforcement. The method was suited to the orebody irregularities, and no crown pillar had to be left or recovered. The introduction of trackless mining and further exploration of the mineralization in the 55

Innovative mining at Garpenberg

drilling at the 800 m and 1,000 m levels in Lappberget, and by February, 2003 was able to start mining ore from the new source. Zinc concentrate production in the year increased to 80,748 t. In March, 2004 the connecting drift was completed, and the formerly separate mines have since been regarded and managed as a single operation. The drift allows access and infrastructure development of new mineable areas, and Garpenberg quickly boosted mine output. The main focus has been on Lappberget, including driving a ramp close to the orebody from the 350 m level, with connection to the surface scheduled for 2007. The Tyskgården mineralization, discovered in the early 1980s, also became accessible, and mining started there in 2003-4. In 2004 Boliden discovered an extension of the Dammsjön mineralization around the 800 m level, and during 2005 a new discovery was made, the reportedly large and potentially highgrade Kvarnberget deposit.

Simba M7 C production drill rig at Garpenberg.

Garpenberg North mine led to the progressive extension of a 1:7 ramp down to the 910 m level. In 1998-99, it was extended to the 1,000 m level, increasing the overall length to 8.7 km. To increase hoisting capacity at the Garpenberg mine, the new Gruvsjö production shaft was completed in 1997 and the original shaft was converted for personnel and materials hoisting. With a hoisting capacity of 450,000 t/y, the newer shaft connects with a ramp accessing the Kanal and Strand orebodies. The present operating area extends approximately 4.5 km SW to NE from the original shaft to the Gransjön mining section.

Concentrate production Upgraded in the early 1990s, the concentrator yields separate zinc, lead, copper and precious metals concentrates. The zinc and lead concentrates are trucked to Gävle harbour and shipped either to Kokkola in Finland or Odda in Norway. Copper and precious metals concentrates are railed to the Rönnskär smelter in Sweden. Since 1957, Boliden has milled over 20 million tonnes of ore at Garpenberg. 56

While the new shaft raised hoisting capacity, and ramp extension accessed new ore in the North mine, metals production rose to record levels in 1998. However, this improvement could not be maintained. Zinc concentrate output fell from 69,051 t in 1998 to 61,126 t in 2001, despite a rise in ore production. And proven plus probable ore reserves declined from 5.7 Mt in 1998 to 2.2 Mt at 4.0% Zn in 2003, putting a question mark on the future of the mine. However, Boliden continued to make investments in technology for the long term at Garpenberg. The mine, the company and the market are now benefiting. And the geologists are very popular.

New reserves Probably the most significant event at Garpenberg during the period of decline was the discovery in 1998 of a new orebody between Garpenberg North and Dammsjön, named Lappberget. This encouraged the company to start development in 2000 of an approximately 3.0 km long drift to connect the 900 m level at Garpenberg North, first to Lappberget for exploration access, and thence to the ramp at the 800 m level at Garpenberg. During 2001, Boliden started core

Higher output In 2005, the mine produced 1,102,000 t ore grading 5.75% Zn, 2.28% Pb, 0.09% Cu and 117 g/t Ag. Approximately 40% of the ore came from Lappberget. The mill yielded 101,000 t of 55.3% zinc concentrate; 29,000 t of 72% lead concentrate with 1,800 g/t silver; 2,800 t of 15% copper concentrate with 40,000 g/t; and 120 t of precious metal concentrate grading 65% lead, 40,000 g/t silver and 400 g/t gold. Some 967,000 t of tailings retained 0.34% Zn, 0.29% Pb, 0.02% Cu and 25.5 g/t Ag. By end-2005 Boliden employed 280 people at Garpenberg, with a further 70 working for contractors at the site. The operation works around the clock 7 days/week in both the concentrator and the mine, with mining carried out by four production teams supported by a development crew and a charging crew. Garpenberg is the Hedemora Community’s largest private sector employer. Since the beginning of 2005 exploration has continued, not only adding tonnes, but also raising average grade. Thanks to the exploration effort, Garpenberg also started 2006 with proven reserves of 4.73 Mt grading 6.0% Zn, 2.5% Pb,

Production Drilling in Underground Mining

Innovative mining at Garpenberg

0.1% Cu, 99 g/t Ag and 0.3 g/t Au. Probable ore brought total reserves up to 10.67 Mt. That compares with 3.63 Mt of reserves at the beginning of 2005. Total resources were also increased, from 11.08 Mt in January, 2005 to 13.22 Mt. This should be sufficient to add another 15-20 years to mine life. These quantities should increase further when portions of the orebodies at Kaspersbo (from 1,000 m down to 1,300 m), Lappberget (500–800 m and 1,100–1,400 m), Dammsjön (500–785 m and 925–1,100 m), and a smaller section at Tyskgården are included in the reserves figures. Kvarnberget is yet to be added, and Boliden is also exploring to the north of the Gransjön where the property extends for several kilometres.

896 Z Mined in “Central Zone”

7

10 0

8

11

9

3m

916 Z Possible sequence

3

9

4

10

5

6 956 Z 17.5 m Drawpoint spacing

1

6

Primary stope: 15 m wide x 40 m high Paste fill

Note: N Note

Secondary stope: 20 m wide x 40 m high Rock fill fill

How Ho ow this o t hole must be designed to just miss m the t drift below to break properly

2

7

3

8

4 996 Z

Sublevel stoping at Lappberget The geological and geotechnical characteristics of significant portions of the newly-discovered orebodies allow mining using more productive longhole methods instead of cut-and-fill. Lappberget ore, for instance, can be up to 60 m wide through considerable vertical distances, and has proved to be suitable for sub-level stoping using a system of primary and secondary stopes progressing upwards. Primary stopes are 15 m wide and 40 m high and filled with paste made from concentrator tailings mixed with about 5% cement. The 20 m wide secondary stopes are filled with development muck without cement. High precision drilling is necessary to get optimum ore recovery and fragmentation. This mining method can possibly be used in parts of the Kaspersbo orebody, if rock quality is high enough. This will help with cost control, which is crucial for mining in Sweden. With Lappberget alone containing 5.46 Mt of the current reserves, grading over 7% zinc and 2.6% lead, plus silver and gold, it is no surprise that present development activities focus on using longhole-based production from these orebodies to raise total metal-in-concentrate output. Presently eight orebodies are being exploited. Garpenberg has generated a strategic plan for 2006–2019 allocating SEK 1

11

Sublevel stoping layout and mining sequence for Lappberget orebody.

billion for developing Lappberget. The overall programme includes: increasing concentrator capacity to 1.2 Mt/y; designing and building a paste fill production/distribution system; and starting longhole drilling. This latter project involved rill mining in the Tyskgården orebody, followed by sublevel stoping in Lappberget.

Rill mining A special mining method known as rill mining has been developed for excavating the Tyskgården orebody. The orebody

is relatively small, and large quantities of development muck have to be accommodated underground as hoisting facilities are used for ore only. The method can be described as a modified sublevel stoping with successive back fill as mining is progressing. The 10 m wide cut-off slots are drilled across the orebody using up-holes and blasted in one single firing, starting from the centre. Seven 127 mm holes are left uncharged to provide sufficient expansion for the remaining 64 mm holes. After the slot has been opened, 70 degrees up-holes fans consisting of eight,

Development and primary stoping layout 1080 level.

Production Drilling in Underground Mining

57

Innovative mining at Garpenberg

Rill mining in progress

Refill of waste One fan

Approx. 15 m

m

m 1.8

st

70 m

bla

nØ

ne

Waste

h fa eac

no ns i

s in

3 fa

ole

Cut off slot

8h

Blasted ore

Approx. 15 m

Max 2m

70°

45°

Rill mining in progress.

approximately 17 m long, holes are blasted into the void. Three rows having a total of 24 holes are blasted simultaneously. After mucking out each blast, new waste is discharged into the stope forming a 45 degrees rill down into the drawpoint. As the waste material will stay quite stable at 45 degrees rill angle, the risk of ore dilution is negligible.

Output limitations The total mine output is restricted to the 1.2-1.3 Mt/y hoisting capacity

available, with a limited amount of truck ore haulage to surface possible. And, although flotation capacity has been improved, concentrator throughput is now limited to the same sort of tonnage by grinding mill capacity. Assuming demand for Garpenberg concentrates increases in the near term, it will be necessary for New Boliden to decide whether to increase hoisting capacity. Developing the now-available reserves for higher long-term production using additional hoisting and processing capacity

might double the amount of investment initially planned.

New drilling technology Atlas Copco has supplied drilling equipment to Boliden’s underground mines for many years. Recently, the company has worked particularly closely with Garpenberg on the development of computer-based technology for more precise drilling and blasting to enhance productivity and reduce ore dilution and operating costs.

Drill pattern for cut off slot.

58

Production Drilling in Underground Mining

Innovative mining at Garpenberg

This joint development process started with the 1998-1999 ramp extension at Garpenberg North. The complex geology results in winding cross sections of varying width, and ore boundaries which are difficult to predict by core drilling. To enable the drifts in the cut and fill stopes to follow the paths of the orebodies, accurate production maps and precise drill rig navigation are essential. Producing drill plans in the office is relatively easy. However, getting drill plans that match the actual ore boundaries is a challenge, and frequently the driller is obliged to improvize while drilling, which can lead to poor blasting results.

Reference line

Mine coordinate system X/Y horizontal Z vertical Reference point (x, y, z)

X Y Z

Drill plan generator The drill plan generator overcomes the ore navigation problem by assisting the operator to create an optimum drill plan right at the face. In case the generated drill plan does not match the actual ore boundaries, the operator can define new coordinates to correct the situation. To do this, having aligned the feed to the laser beam to define the position of the rig, the operator points the drill feeds at the four corners of the face, in line with the geologist’s marks. When all adjustments have been made, the Rig Control System RCS will develop the most efficient round compatible with the new parameters. The generated drill plan is automatically entered into the Rocket Boomer L2 C ABC standard drilling system, and the operator can start drilling. While drilling, each completed hole is logged, and, if the Measure While Drilling (MWD) option is activated, the drilling parameters along the hole are recorded. All of the data is logged on the PC card for off-line processing in the Tunnel Manager support program, and is then transferred to the mine database. As a result of the Drill Plan Generator and ABC Regular, Garpenberg North increased the size of the production rounds from 400 t to 600 t, reduced drilling time from 5 to 3 h/round, reducing costs of explosives, scaling and rock support and, most important, minimizing ore dilution. Garpenberg now has one Rocket Boomer L2 rig with COP 3038 rock drills and one Rocket Boomer L2 C

Navigation system for downwards longhole production drilling.

with the COP 1838, as well as the Rocket Boomer 352S.

Mine navigation The availability of orebodies at Garpenberg suitable for mining with longhole production drill rigs led to a further collaboration. Having already transferred RCS technology to the Simba longhole drill rigs, Atlas Copco provided the mine with a Simba M7 C that is additionally able to use new software for precision longhole drilling. This utilizes Garpenberg’s mine coordinate reference, mapping and planning system in a similar way to the software developed for the Rocket Boomer L2 C units. Using a PC card, the Mine Navigation package can effectively integrate the Simba RCS with the mine coordinate reference system, allowing the operator to position the machine at the correct vertical and horizontal coordinates in the drilling drift for drilling planned longhole fans in precisely the intended place. Using the drill plan supplied by Microsystem (or, in other mines, the Ore Manager package) to the Rig Control System, the operator can drill to the exact x, y and z positions prescribed for each hole bottom. Just as the Rocket

Production Drilling in Underground Mining

Boomer rigs can use the MWD system while face drilling, so the Simba can use Quality Log to record drilling parameters and compare the planned and actual result, allowing holes to be re-drilled if necessary. This new technology will help Garpenberg to optimize economy and productivity when applying long hole drilling mining methods. The target for 2007 is to mine about 600,000 t of ore by cutand-fill, 300,000 t by sublevel stoping, 150,000 t by rill mining and 150,000 t by crown pillar removal. Further ahead, sublevel stoping may contribute 50% of total mine production. However, at present this mining method is completely new to the mining teams at Garpenberg, and they have just started the process of getting acquainted with long hole drilling methods.

Acknowledgements This article is based upon an original report by Kyran Casteel. Atlas Copco is grateful to the mine management at Garpenberg for their assistance with site visits, and in particular to Tom Söderman and Lars Bergkvist for comments and revision. This article first appeared in Atlas Copco Mining & Construction magazine No 3 2006. 59

Innovative mining at Garpenberg

Headframe at Garpenberg.

60

Production Drilling in Underground Mining

kiruna, northern sweden

Automated longhole drilling with Simba at LKAB Mining of the Kirunavaara orebody

1910 1910 1920 1920

Nivå m

1900

0

Ore beneficiation plant

1930 1930 1940 1940 1950 1950 1960 1960

142

Railway to Narvik port

1965 1965 1970 1970

230 275 320 420

1980 1980

540

1990 1990

Skip hoisting 2000 2000

Sea level

2005 2005

Skip hoisting

Ore buffer pockets

1045 m Main haulage level

Exploration drift 1060 m

740 775

1045

Crusher 1175

1365 m New haulage level

1365

Crusher

Modern methods LKAB is one of the world’s leading producers of upgraded iron ore for the steel industry. It’s iron ore mines at Kiruna and Malmberget in Northern Sweden are models of modern mining methods, with high levels of automation in rail transport, loading and production drilling. Since 2002, production at Kiruna has increased by 40%, and the number of drill metres required has increased accordingly, approaching 1 million m/y. High capacity drill rigs are a must, and the mine fleet of Atlas Copco Simba rigs for up-hole drilling has been expanded to cater for the huge current longhole drilling demand. Meantime, the requirement for slot drilling has increased at Malmberget, where a new computerized production drill rig is taking the strain.

Mining of the Kirunavaara orebody over the last century.

History at LKAB LKAB is an international high-tech minerals group, one of the world’s leading producers of upgraded iron ore products for the steel industry, satisfying approximately 4% of the world market, and a growing supplier of industrial minerals products to other sectors The company is wholly owned by the Swedish state, and has more than 3,500 employees. Their two iron ore mines, located above the Arctic Circle in the far north of Sweden, are mining mostly magnetite using sublevel caving. The crude ore is dumped into underground ore passes for loading onto trucks or trains for hauling to a central crushing plant. The crushed ore is then hoisted to the surface for further processing. Underground rail transport in Kiruna is

Production Drilling in Underground Mining

remote-controlled, as are some other operations, for example, production drilling and loading. This degree of automation enables greater efficiency in process control. During the 1990s, Atlas Copco and LKAB developed a pioneering fully automatic long hole production drilling system using the Atlas Copco Simba W469 drill rigs. These rigs have since drilled about 8 million metres at the Kiruna and Malmberget mines. In 2005, LKAB ordered three new Atlas Copco Simba W6 C, to complement the Simba W469s still in operation. These new Simbas, based on the latest generation computerized drilling technology, have met the expectations of the customer, and now form a base for future automation. 61

Automated Longhole Drilling with Simba at lkab

between the 775 m and 1,045 m levels. The mining rate in 2007 is planned at 27.2 Mt of crude ore, rising to 29.6 Mt/y by 2009. The Malmberget mine consists of about 20 orebodies, of which ten are currently mined. Most of the deposits are magnetite, but non-magnetic hematite also occurs. The present main level of the Malmberget mine is at a depth of 1,000 m. The mining rate in 2007 is planned at 16.5 Mt of crude ore, subject to mining approvals, with planned extraction rates of 17.1 Mt/y by 2012.

Sublevel caving

Front view of Simba W6 C drilling in full fan automatic.

Kiruna and Malmberget The orebody in Kiruna is a single, enormous slice of magnetite. It is about 4 km long, has an average width of 80 m, and extends to an estimated depth of

2,000 m. It is inclined at roughly 60 degrees. The main level is located on 1045 level, which is 1,045 m below surface level of the original mountain Kiirunavara. Mining of the orebody takes place

The automatic rod handling system with a capacity of 63 m of long holes.

62

Slices of ore are drilled upwards with remote-controlled production drilling rigs and these rigs are equipped with fan automation. From the control room, the operators (drillers) operate several drill rigs out in the production areas via remote control. The rig drills upwards into the ore at 80 degrees front inclination, forming fanshaped patterns of holes. There are nominally 10 drill holes in each fan. They are drilled from 15 m to 58 m in length. The holes are straight, so that subsequent charging with explosive and blasting can be done effectively and efficiently. The drilling burden is usually 3 m, but in some parts of Malmberget they use burdens of 3.5 m. In 2007, Kiruna is planning to drill 1 million m of production holes to produce approximately 27 Mt, while Malmberget is planning to drill 600,000 m to produce approximately 15 Mt of ore. Of the three Simba production drilling rigs purchased by LKAB in 2005, two are Simba W6 C rigs, designed for optimized production drilling at Kiruna, with Wassara ITH-W100 water hammers for nominally 115 mm diameter holes. The third rig, a Simba W6 C Slot, is specially designed to optimize up hole slot drilling at Malmberget, using 165 mm nominal diameter slot drilling equipment and the Wassara W120 ITH hammer. The Simba W6 C Slot rig has the ability to drill production holes around the slot, with the added benefit of drilling parallel rings from the same setup with a burden of 500 mm. LKAB demands high productivity, efficiency and accuracy from its mine

Production Drilling in Underground Mining

Automated Longhole Drilling with Simba at lkab

production drill rigs. Automation and the ability to remotely control the drill rigs is often an integral part of obtaining the drilling rates required. All LKAB production drill rigs have magazines for sufficient rods or tubes to drill the required production hole lengths. A crane is always available to assist with changing out worn drill tubes and hammers to avoid heavy lifting.

Simba W6 C The Simba W6 C rigs are equipped with a rig control system specially designed for ITH applications. All units are equipped with Rig Remote Access via standard WLAN systems, which enables a number of functions such as remote supervision when drilling unmanned in full fan automation, as well as data transfer of drill plans and log files. If manual operation is preferred, the rig cabin offers a good working environment with vibration dampening and noise isolation. Compared to its predecessor, the Simba W469, mobility has been improved thanks to reduced rig length and a more powerful engine . This further reduces the drilling cycle. An important feature is the new water pump system, which increases the efficiency, reduces water spillage and lowers the overall cost. A new air venting system ensures longer pump life, and the pump pressure control has been modified to optimize hammer efficiency. Some special features of the Simba W6 C are: a reserve hammer rack for four hammers; a place for reserve drill bits; a crane for heavy lifting; WLAN communication capacity; fan automation; tube magazine for 35 x 1.8 m long drill tubes for 63 m long holes; drill cuttings catcher; short rig length; robust construction; six cylinder motor; higher drilling capacity; accurate and easy set-up accuracy and ease of set-up; and automatic redesign of

Atlas Copco Simba W6 C at work.

the fan to planned hole ends, known as autospreading.

Drilling accuracy To achieve the demands for drilling accuracy, with a hole deviation of less than 1%, it is important to select the best possible tools for the task. ITH produces very straight holes, with an even penetration rate throughout. To further improve drilling accuracy, hammer and guide tubes are used, both equipped with a guide skirt. Rotation and feed pressures, feed speed, and impact pressure all are factors in achieving the necessary drilling accuracy. With the Rig Control System (RCS) on the Atlas Copco drill rig it is possible

to optimize the feed pressure by using Rotation Pressure Controlled Feed (RPCF). This function uses the rotation pressure to read the process within the hole and adapt the feed pressure accordingly. The RCS gives a constant rotation pressure that keeps the tube joints tight, and creates an optimized penetration rate. The feed pressure on the Simba W6 C is automatically controlled by the RPCF and kept at the correct level at all times. Without this function there is an increased risk of hole deviation. Due to the advanced control by using the rotation pressure as a master, the system has the capability of adapting the parameter for feed pressure according to the rock conditions.

Wassara W100 hammer used for ITH drilling at Kiruna.

Production Drilling in Underground Mining

63

Automated Longhole Drilling with Simba at lkab

application. It supplies two sizes of hammer to the Simba W6 C: the W100 for production drilling, and the W120 for slot drilling in Malmberget. The W100 has a required water f low of 200-350 l/min at 180 bar. For production drilling, a bit size of 115 mm is used, together a 102 mm diameter, 1.8 m long specialized tube string. The W120 is used for slot holes, which require a larger 165 mm diameter bit size. Water consumption of the W120 is 450-500 l/min at 160 bar. The drill string for slot drilling is the same as for production drilling.

Slot hole drilling

Slot drilled and ready as a free face for blasting.

To keep a balance between high penetration rate and hole deviation, the feed speed is held back if it exceeds a preset limit. The level is adjustable to different ground conditions, and the feed speed also alerts the operator to the need for drill bit change. The impact pressure in the hammer must be adjusted regularly, so that it suits both local ground conditions and bit selection. With the RCS impact control there is a continuous adjustment of the impact pressure to match the ground conditions and the condition of the hammer, optimizing drilling performance.

Wassara hammers ITH drilling can be carried out with water driven hammer or air driven hammer. The water hammer achieves a very clean working environment when compared to air driven hammers, which release dust and lubricated air into the drifts. Since all of the production drilling is upwards, the water hammer was the natural choice. Wassara is an LKAB-owned company specialized in water hammer 64

The production stopes at Malmberget are opened using the slot drilling technique, due to its efficiency and flexibility. First a pilot hole is drilled with a specialized pilot hammer with guide tube and guide skirts to maintain straightness. The pilot hammer is then replaced with the slot hammer, using a lifting crane mounted on the drill rig. Attached to the slot hammer is a guide tube that will guide the hammer from the previously drilled pilot hole. A complete slot contains 10 holes, around which a number of blast holes are drilled and blasted. All drilling operations are controlled from the cabin, in case of spalling rock. All cabins are equipped with air conditioning, CD player, swingable seat, and large windows for maximum visibility.

Automatic drilling At LKAB the Simba W6 C machines are working with the highest level of automation, ABC Total, which provides a full fan automatic drilling system with only some initial steps needed from the operator. Within the ABC Total package there is also the possibility to drill manually or with one-hole automatics, if preferred. All three levels have built in safety interlocks during the whole process, allowing the operator to leave the machine while drilling is underway. Motion sensors detect anybody entering the restricted area while the machine is working under full automatics. The machines carry on drilling unmanned during shift change, lunch

break and night shift, adding valuable drill metres.

Rig Remote Access With increase of automation and decrease of manning, there is a growing need for remote surveillance. Atlas Copco has developed an interface with the rigs called Rig Remote Access, RRA. With RRA the user can connect the drill rig to an existing network system via LAN or WLAN. In LKAB the RRA is used to transfer drill plans, log files and to handle messages coming from the rig control system. This system is a 3-D program able to map the whole coordinate system of the mine. The drill plans are stored in an RRA server, which is connected to the whole network system both on surface and underground. From the access points underground, all data is received and uploaded to the rigs. The access points also work in the opposite direction, when the machine sends out messages on the network. The messages are picked up from specified IP addresses, and can be read from a laptop or PC located anywhere on the network system. Messages from the rigs could be log files such as quality logs, Measure While Drilling MWD files, or alarm messages. The RRA can also be used to overview the drilling process on the cabin display. This Remote Display function can be used for surveillance of the drilling process. By using specified IP addresses, it is possible to open the display menus from any PC or laptop. With RRA, all data handling in the mine has been simplified, resulting in increased productivity. The drill rigs can also work unmanned, whilst being monitored from a remote location.

Acknowledgements Atlas Copco is grateful to the managements at LKAB Kiruna and Malmberget mines for their assistance with this report, and their kind permission to publish. The original paper by P. Ericsson of Atlas Copco and C. Griffiths of LKAB has been edited to style and space.

Production Drilling in Underground Mining

PRODUCTION DRILL RIG OVERVIEW

Modular program with maximum flexibility Type 4 Positioning: Rotation, 380° Tilt forwards, 30° Tilt backwards, 30° Side movement, ±1.5 m with sliding table Extra side movement, ±0.75 m with pendulum arm

Type 3 Positioning: Rotation, 380° Tilt forwards, 30° Tilt backwards, 30° Side movement, ±1.5 m with sliding table

Type M COP 34,44,54,64 COP 1838ME/MEX

Type L

COP 1838HE/HEX COP 2550UX COP 4050MUX

Type M3/L3 Type 6 Positioning: Rotation, 380° Tilt forwards, 45° Tilt backwards, 30° Sideways, ±1.5 m

Type M4

Canopy Telescopic and FOPSapproved

Extra: Turn table ±20° Cabin with panoramic view and FOPS-approved Engine module

Type 7 Positioning: Reach, 3.5 - 5.1 m Rotation, 360° Boom up, 45° Boom down, 15° Sideways, ±35° Forwards, 90° Backwards, 10°

Type M6/L6

Front module

Rear module

Type M7

A HOLMBERG 2007

Alternative pendulum arm with 90° turned feedholder

Power pack

© Atlas Copco 2003

The Simba M- and L-series production drilling rigs represent a concept that makes the drilling unit easier to run and more productive to use. “Drilling with precision” has been our motto and objective for both the mechanical solutions and the electronic control system. Mechanical components and electronics represent the absolute best available, which is no small claim. And the Rig Control System (RCS) adds extendable intelligence. The endresults is a fleet of Simba rigs with the dynamic flexibility to solve not just today’s needs but also tomorrow’s.

The M-series are tophammer production drilling rigs with RCS for high productivity and precision. Hole diameter range 51-102 mm and hole depth up to 51 m with Rod Handling System. Equipped with the well proven rock drill COP 1800-series (51-89) or COP 2550UX (89-102). Available in four configurations M3 C, M4 C, M6 C and M7 C.

With four different drill units, three feed lengths, six tophammer rock drills, a number of ITH hammers and an extensive options program, we are able to offer the right Simba for every application. Each Simba rig is designed to be dismantled into its main components for ease of lowering into narrow shafts.

The L-series are tophammer production drilling rigs with RCS for high productivity and precision. Hole diameter range 89-127 mm and hole depth up to 51 m with Rod Handling System. Equipped with the well proven rock drill COP 4050MUX. Available in two configurations, L3 C and L6 C.

The M-series are also available with ITH hammers COP 34, 44, 54 and 64 for hole diameter range 92-178 mm. Available in three configurations, M3 C-ITH, M4 C-ITH and M6 C-ITH. Hole depth up to 66 m with Rod Handling System.

Visit www.atlascopco.com/cmt for more information Production Drilling in Underground Mining

65

PRODUCTION DRILL RIG OVERVIEW

Dimensions in mm

1150 900

Stingerextension

o

R

30

29

70

30 o

(R

D)

4915

380o 1825

Simba, type 3

1200 (900) Feed extension

1500 (PH)

RD = Ring drilling PH = Parallel holes

(valid for feed BMH 216X and top hammer equipped with extractor)

150 7440

Stingerextension 2000

Type M3

3000 (PH)

Dimensionsion mm

Stingerextension

750

1500

o

30

750

29

380o

1825

Simba, type 4

(R D) H)

90 (P

H)

4915 4600

70

R 27

30 o

(P 150 0

R

1200 (900) Feed extension

1150 900

RD = Ring drilling PH = Parallel holes

(valid for feed BMH 216X and top hammer equipped with extractor)

150 7440

Stingerextension 2000

Type M4

3000 (PH)

Dimensions in mm

Stinger extension 1150 900

RD = Ring drilling PH = Parallel holes

o

R

30

Feed extension 1200 (900) 45 o

D)

(valid for feed BMH 246X and top hammer equipped with extractor)

(R

45 o 380o

2780

5650 5000

80

48

Simba, type 6

o

45

(RD) R 2760

150 8520 Stinger extension 2000

Type M6

700

850 Stinger extension 1200 (900) Feed extension

16 0

0

50 11

6140

Dimensions in mm

7850

10

o

90o 45o

66

Dimensions with 45o boom-lift 25o boom-swing

360o

900

(valid for feed BMH 216X and top hammer equipped with extractor)

Dimensions with 0o boom-lift 35o boom-swing

25o 35o

Simba, type 7

Parallell holes with 0o boom-lift 35o boom-swing Coverage area 1100x4690 mm

150

Type M7

3900

1600

2000 Stinger extension

Production Drilling in Underground Mining

DRILL RIG SPECIFICATION

Simba 157 900

(24°)

± 114°

1990

2690

55.5° 360°

SIMBA H157

46.5° 965

1535

1150

2635

1150

All dimensions in mm

7435

Compact production drilling rig with hydraulic tophammer rock drill and Direct Control System, DCS. Provides a basic, efficient and productive long hole drilling solution for narrow vein applications. Ring drilling with parallel holes up to 3.5 m apart. Maximum reach and flexibility achieved with the BUT 4 boom. Ideal for cable bolt holes but also ordinary production drilling. Hole diameter 51–76 mm depending on rock drill type.

Features • High drilling capacity with basic functions such as feed force control by RPCF and anti-jamming. Manually adjusted feed force from the operator’s panel. • Rod handling is done from a swing out panel mounted on the boom. Drilling controls are located at the platform under the protection roof for operator safety. • Rock drill, COP 1800-series • Angle reading instrument ARI 157 • Stingers mounted on the positioning unit gives a sturdy set up with less possible hole deviation • Mine adapted carrier with high ground clearance, articulated steering and four wheel drive for easy manoeuvring in narrow drifts and steep ramps • Compact transport dimensions • FOPS-approved telescopic protection roof • Electrically driven compressor for rock drill lubrication

• Water mist flushing, external water and air • Rock drill lubrication warning kit • Extractor unit (back hammering) • Central lubrication system • Rig alignment laser • Fire suppression system, Ansul or Forrex

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Working range Simba 157

Production Drilling in Underground Mining

Dimensios in mm 1500 Feed extension

(24°)

900

370

40

R32

0

R2340

30 o

55° ± 114°

175

2635

900

360°

o

1 x COP 1838ME 1 x BMH 2,300/2,800 1 x 900 mm extension 1 x ARI 157C 1 x 1,380 mm extension 1 x 55 kW DCS 9,460 mm 1,360 mm 1,990 mm 4,400/2,485 mm app. 9,500 kg

30

Rock drill Feed Boom BUT 4B Angle reading instrument Stinger backward on feed Power pack Drilling system Length tramming Width Height tramming Turning radius Gross weight (basic rig+RHS)

Main optional equipment

4910

Main specifications Simba 157

• Hydraulically driven water booster pump for high flushing capacity • Cable reel and collector

1380 Stinger extension

67

DRILL RIG SPECIFICATION

2800 2100

Simba 1257

2060

1350

1350 7365

Compact production drilling rig with hydraulic tophammer rock drill. Direct Control System, DCS. Provides a basic, efficient and productive long hole drilling solution for narrow vein applications. Ring drilling with parallel holes up to 5.7 m apart. Maximum reach and flexibility achieved with the BUT 32 boom. Ideal for cable bolt holes but also ordinary production drilling. Hole diameter 51–  89 mm depending on rock drill type.

Features • High drilling capacity with basic functions such as feed force control by RPCF and anti-jamming. Manually adjusted feed force from the operator’s panel. • Drilling, positioning and rod handling controls are located at the platform under the protection roof for operator safety • Angle reading instrument ARI 1257 • Rod Handling System, RHS 10 • Rock drill, COP 1800-series • Stingers mounted on the positioning unit gives a sturdy set up with less possible hole deviation • Mine adapted carrier with high ground clearance, articulated steering and four wheel drive for easy manoeuvring in narrow drifts and steep ramps • Compact transport dimensions • FOPS-approved telescopic protection roof • Electrically driven compressor for rock drill lubrication

• Water mist flushing • Rock drill lubrication warning kit • Extractor unit (back hammering) • Automatic or central lubrication system for the boom • Rig alignment laser • Fire suppression system, Ansul or Forrex • Rig washing kit

Visit www.atlascopco.com/cmt for more information

Working range Simba 1257 1 x COP 1838 ME 1 x BMHP 6,804/6,805/6,806 1 x 1,250 mm extension 1 x 1,380 mm extension 1 x 1x55 kW DCS 9,600 mm 8,805 2,000 mm 2,100 mm 4,900/2,700 mm app. 12,000 kg

Dimensios in mm 900 Feed extension 6 575 014 7*

44

R40

(24°)

0

5 12

R2840 * parallel coverage 35 o o

68

Main optional equipment

35

Rock drill Feed Boom BUT 32 PD Stinger backward on feed Power pack Drilling system Length tramming Length (with BMH 6804) Width Height tramming Turning radius Gross weight (basic rig+RHS)

• Hydraulically driven water booster pump for high flushing capacity • Cable reel and collector

6150

Main specifications Simba 1257

All dimensions in mm

55° ± 114°

175

2605

1250

360°

1380 Stinger extension

Production Drilling in Underground Mining

DRILL RIG SPECIFICATION

Simba 1250-series Simba 1254

20o Simba 1253

700

80o

1670

2200

1915

1960

Production Drilling in Underground Mining

Working range Simba 1250-series Simba 1253 1500

o

1500 2000

1500

750

1150

1150

o

45

45o

1500

1350

45o

1350

45

Simba 1254 750

235

750 750

945

Simba 1252

1150

1 x COP 1838ME 1 x BMH 214/215/216 1 x BHR 30 1 x BHT 15 (Simba 1253 and 1254) 1 x BSJ8-115E BSH 55 BHP 10 (Simba 1252 and 1254) EDS 6,580 mm 2,000/2,380/2,380 mm 2,660/2,770/2,810 mm 2,900 mm 5,100/2,500-2,700 mm app. 12,500 kg

Visit www.atlascopco.com/cmt for more information

945

Rock drill Feed Rotary actuator Slide table Stinger backward on feed holder Drill steel support Pendulum arm Drilling system Length tramming (BMH 254) Width -2/-3/-4 Height tramming -2/-3/-4 Height roof up Turning radius Gross weight (basic rig+RHS)

• Rock drill lubrication warning kit • Angle reading instrument • Hole depth measurement • Water mist flushing • Extractor unit (back hammering) • Automatic or central lubrication system for the positioning and drilling unit. • Rig alignment laser • Fire suppression system, Ansul or Forrex • Rig washing kit • Stinger forward on feed, BSJ 8-115

1150

Main specifications Simba 1250-series

Main optional equipment

235

• Electric Direct System, EDS. High drilling capacity with basic functions such as semi-automatic drilling and anti-jamming included. Manually adjusted feed force from the operator’s panel. Digital movements on the drilling unit controlled by switches on a separate positioning panel. Trolley mounted control panel for flexible operator environment. • Rod Handling System, RHS 17 • Rock drill, COP 1800-series or the COP 2550 UX for larger hole range and tougher rock conditions • Simba 1252, ring drilling with parallel holes upwards/ downwards and in the side walls up to 1.5 m apart • Simba 1253, ring drilling with parallel holes upwards/ downwards up to 1.5 m apart • Simba 1254, ring drilling with parallel holes upwards/ downwards up to 3 m apart and in the side walls up to 1.5 m apart

1350

Features

• Stingers mounted on the positioning unit gives a sturdy set up with less possible hole deviation • Mine adapted carrier with high ground clearance, articulated steering and four wheel drive for easy manoeuvring in narrow drifts and steep ramps. • FOPS approved telescopic protection roof • Electrically driven compressor for rock drill lubrication • Electrically driven water booster pump for high flushing capacity • Cable reel and collector

1150

Production drilling rigs with hydraulic tophammer rock drill. Electric Direct System, EDS, provides a basic, efficient and productive long hole drilling solution. Ring drilling with parallel holes upwards/downwards and in the side walls. Three different positioning unit configurations to match the user’s need. Hole diameter 51–89 (102) mm depending on rock drill type. Hole depth up to 33 m, with RHS 17.

All dimensions in mm

1810

1150

1350

945

1350

6580 (BMH 254)

235

1990

Simba 1252

800

1500

2000

2000

2380

2380

800

69

DRILL RIG SPECIFICATION

Simba 1350-series 20º

1845

2260

1555 1500 2301 7815−8209 (with BMH 214)

• Electric Direct System, EDS. High drilling capacity with basic functions such as semi-automatic drilling and anti-jamming included. Manually adjusted feed force from the operator’s panel. Digital movements on the drilling unit controlled by switches on a separate positioning panel. Trolley mounted control panel for flexible operator environment. • Rod Handling System, RHS 17 • Rock drill, COP 1800 series or the COP 2550 UX for larger hole range and tougher rock conditions • Simba 1352, ring drilling with parallel holes upwards/ downwards and in the side walls up to 1.5 m apart • Simba 1353, ring drilling with parallel holes upwards/ downwards up to 1.5 m apart • Simba 1354, ring drilling with parallel holes upwards/ downwards up to 3 m apart and in the side walls up to 1.5 m apart

Main specifications Simba 1350-series Rock drill Feed Rotary actuator Slide table Stinger backward on feed Stinger forward on feed Drill steel support Pendulum arm Drilling system Length tramming (BMH 214) Width Height tramming Height roof up Turning radius Gross weight (basic rig+RHS)

70

1 x COP 1838ME 1 x BMH 214/215/216 1 x BHR 60-2 1 x BHT 150 (Simba 1353 and 1354) 1 x BSJ8-200 1 x BSJ8-115 BSH 55 BHP 150 (Simba 1352 and 1354) EDS 7,815-8,209 mm 1,950/2,380 mm 3,180 mm 2,960 mm 5,440/2,890 mm app. 15,000 kg

Main optional equipment • Rock drill lubrication warning kit • Angle reading instrument • Hole depth measurement • Rod handling system, RHS 27 • Water mist flushing • Extractor unit (back hammering) • Automatic or central lubrication system for the positioning and drilling unit. • Rig alignment laser • Fire suppression system, Ansul or Forrex • Rig washing kit • Water hose reel

Visit www.atlascopco.com/cmt for more information

Working range Simba 1350-series 750

1500

750

1150

Features

• Stingers mounted on the feed beam gives a sturdy set up with less possible hole deviation • Mine adapted carrier with high ground clearance, articulated steering and four wheel drive for easy manoeuvring in narrow drifts and steep ramps. • FOPS approved telescopic protection roof • Electrically driven compressor for rock drill lubrication • Electrically driven water booster pump for high flushing capacity • Cable reel and collector

945

Production drilling rigs with hydraulic top hammer rock drill. Electric Direct System, EDS. Provides a basic, efficient and productive long hole drilling solution. Ring drilling with parallel holes upwards/downwards and in the side walls. Three different positioning unit configurations to match the user’s need. Hole diameter 51–  89 (102) mm depending on rock drill type. Hole depth up to 51 m, with optional RHS 27.

Simba 1354 All dimensions in mm

45º

45º

255

2304

1950 2380 2000

3180

700

65º

2430

Simba 1354

Production Drilling in Underground Mining

DRILL RIG SPECIFICATION

2360 - 3060

Simba M3 C

2900

Production drilling rig with hydraulic tophammer rock drill. Rig Control System, RCS, provides efficient, productive and high precision long hole drilling. Ring drilling with parallel holes upwards/downwards up to 1.5 m apart. Hole diameter 51–  89 (102) mm depending on rock drill type. Hole depth up to 51 m, with optional RHS 27.

Features • RCS with interactive operators control panel. Ergonomic design. Proportional movements in the levers for smooth and precise positioning. Integrated statistics, diagnostics and log data. Up to five different pre-set settings of drilling parameters. PCMCIA-card interface for transfer of drill plans, log files and storage of parameter files for optimal drill settings. Trolley mounted control panel for flexible operators environment. • Rod Handling System, RHS 17 • Rock drill, COP 1800-series or the COP 2550UX for larger hole range and tougher rock conditions • Stingers mounted directly on the feed beam gives a sturdy set up with less possible hole deviation and less stress on the drilling unit • Mine adapted carrier with high ground clearance, articulated steering and four wheel drive for easy manoeuvring in narrow drifts and steep ramps • Turbo charged water cooled diesel engine with catalyser • ABC Basic with semi automatic drilling and angle reading instrument

Main optional equipment • FOPS-approved cabin • ABC Regular, one hole automatics • ABC Total, full fan automatics, including Full Drill Data Handling and Breakthrough Automatic Stop • Full Drill Data Handling, including DPH and MWD • Drill Plan Handling, DPH • Void detection, VD • Breakthrough Automatic Stop, BAS • Rig Remote Access, RRA • Rod handling system, RHS 27 • Water mist flushing • Extractor unit (back hammering) for COP 1800-series • Bit changer • Automatic or central lubrication system for the positioning and drilling unit • Rig alignment laser • Fire suppression system, Ansul or Forrex - manual, check fire or automatic • Water hose reel • Turntable +/- 20°

Visit www.atlascopco.com/cmt for more information

Working range Simba M3 C

Production Drilling in Underground Mining

A Dimensions in mm

Stinger extension

o

R

30 29

70

(R

D)

30 o

1200 (900) Feed extension

1500 (PH)

RD = Ring drilling PH = Parallel holes

380o 1825

1 x COP 1838ME 1 x BMH 214, 215, 216 1 x BHR 60-2 1 x BHT 150 1 x BSJ8-200 1 x BSJ8-150 2 x 55 kW RCS 10,500 mm 2,350 mm 2,875/2,965 mm 6,300/3,800 mm app. 18,000 kg

1150 900

Rock drill Feed Rotary actuator Slide table Stinger backward on feed Stinger forward on feed Power pack Drilling system Length tramming Width Height tramming/roof up Turning radius Gross weight (basic rig+RHS)

All dimensions in mm

• FOPS-approved telescopic protection roof • Hydraulically driven compressor for rock drill lubrication • Hydraulically driven water booster pump for high flushing capacity • Cable reel and collector • Smart oil leakage shut-down and distributed hydraulics at the drilling unit

4915

Main specifications Simba M3 C

2500 3000

3740

150 7440

M3

Stinger extension 2000

A-A A

71

DRILL RIG SPECIFICATION

2360 - 3060

Simba M4 C

2900

Production drilling rig with hydraulic tophammer rock drill. Rig Control System, RCS, provides efficient, productive and high precision long hole drilling. Ring drilling with parallel holes up to 1.5 m apart in the side walls and up to 3 m apart upwards/downwards. Hole diameter 51–  89 (102) mm depending on rock drill type. Hole depth up to 51 m, with optional RHS 27.

Features • Rig Control System, RCS with interactive operators con trol panel. Ergonomic design. Proportional movements in the levers for smooth and precise positioning Integrated statistics, diagnostics and log data. Up to five different pre-set settings of drilling parameters PCMCIA-card interface for transfer of drill plans, log files and storage of parameter files for optimal drill settings. Trolley moun ted control panel for flexible operators environment. • Rod Handling System, RHS 17 • Rock drill, COP 1800-series or the COP 2550UX for larger hole range and tougher rock conditions • Stingers mounted directly on the feed beam gives a sturdy set up with less possible hole deviation and less stress on the drilling unit • Mine adapted carrier with high ground clearance, articulated steering and four wheel drive for easy manoeuvring in narrow drifts and steep ramps • Turbo charged water cooled diesel engine with catalyser • ABC Basic with semi automatic drilling and angle reading instrument

• FOPS-approved cabin • ABC Regular, one hole automatics • ABC Total, full fan automatics, including Full Drill Data Handling and Breakthrough Automatic Stop • Full Drill Data Handling, including DPH and MWD • Drill Plan Handling, DPH • Void detection, VD • Breakthrough Automatic Stop, BAS • Rig Remote Access, RRA • Rod handling system, RHS 27 • Water mist flushing • Extractor unit (back hammering) for COP 1800 -series • Automatic or central lubrication system for the positioning and drilling unit • Rig alignment laser • Fire suppression system, Ansul or Forrex - manual, check fire or automatic • Water hose reel • Turntable +/- 20°

Visit www.atlascopco.com/cmt for more information Working range Simba M4 C

A 3000 (PH)

RD = Ring drilling PH = Parallel holes

Dimensions in mm

Stinger extension

750

R

70

R 27

1500

o

30

750

29

(R D) H)

30 o

380o

1825

90 (P

1200 (900) Feed extension

1150 900

1 x COP 1838ME 1 x BMH 214, 215, 216 1 x BHR 60-2 1 x BHT 150 1 x BHP 150 1 x BSJ8-200 1 x BSJ8-150 2 x 55 kW RCS 10,800 mm 2,350 mm 2,875/2,965 mm 6,300/3,800 mm app. 20,000 kg

H)

72

Main optional equipment

(P 1500

Rock drill Feed Rotary actuator Slide table Pendulum arm Stinger backward on feed Stinger forward on feed Power pack Drilling system Length tramming Width Height tramming/roof up Turning radius Gross weight (basic rig+RHS)

All dimensions in mm

• FOPS-approved telescopic protection roof • Hydraulically driven compressor for rock drill lubrication • Hydraulically driven water booster pump for high flushing capacity • Cable reel and collector • Smart oil leakage shut-down and distributed hydraulics at the drilling unit

4915 4600

Main specifications Simba M4 C

2700 3200

3740

150 7440

Stinger extension 2000

A-A

M4

A

Production Drilling in Underground Mining

DRILL RIG SPECIFICATION

3050

Simba M6 C

Illustration shows rig with optional equipment mounted All dimensions in mm

2025 2900

3740

Production drilling rig with hydraulic tophammer rock drill. Rig Control System, RCS, provides efficient, productive and high precision long hole drilling. Ring drilling with parallel holes upwards/downwards up to 3 m apart. Hole diameter 51–  89 (102) mm depending on rock drill type. Hole depth up to 51 m, with optional RHS 27.

Features • Proportional movements in the levers for smooth and precise positioning. Integrated statistics, diagnostics and log data. Up to five different pre-set settings of drilling parameters. PCMCIA-card interface for transfer of drill plans, log files and storage of parameter files for optimal drill settings. • Rod Handling System, RHS 17 • Rock drill, COP 1800-series or the COP 2550UX for larger hole range and tougher rock conditions • Stingers mounted directly on the feed beam gives a sturdy set up with less possible hole deviation and less stress on the drilling unit • Mine adapted carrier with high ground clearance, articulated steering and four wheel drive for easy manoeuvring in narrow drifts and steep ramps • Turbo charged water cooled diesel engine with catalyser • ABC Basic with semi automatic drilling and angle reading instrument • FOPS-approved telescopic protection roof • Hydraulically driven compressor for rock drill lubrication

Main optional equipment • FOPS-approved cabin • ABC Regular, one hole automatics • ABC Total, full fan automatics, including Full Drill Data Handling and Breakthrough Automatic Stop • FOPS-approved cabin • Full Drill Data Handling, including DPH and MWD • Drill Plan Handling, DPH • Void detection, VD • Breakthrough Automatic Stop, BAS • Rig Remote Access, RRA • Rod handling system, RHS 27 • Water mist flushing • Extractor unit (back hammering) for COP 1800-series • Automatic or central lubrication system for the positioning and drilling unit • Rig alignment laser • Fire suppression system, Ansul or Forrex - manual, check fire or automatic • Water hose reel • Remote operating kit. Line Of Sight, LOS

Visit www.atlascopco.com/cmt for more information Working range Simba M6 C Stinger extension 1150 900

Dimensions in mm

Feed extension 1200 (900) 45 o

o

30

80 R 2760

(RD)

o

45

45 o

380o

2780

D)

(R

Production Drilling in Underground Mining

A 3000 (PH)

RD = Ring drilling PH = Parallel holes

48

1 x COP 1838ME 1 x BMH 214, 215, 216 1 x BHR 60-2 ±1,5 m 1 x BSJ8-200 1 x BSJ8-150 2 x 55 kW RCS 10,400 mm 2,210 mm 3,200 mm 6,750/3,800 mm app. 22,000 kg

R

Rock drill Feed Rotary actuator I-frame with pendulum arm Stinger backward on feed Stinger forward on feed Power pack Drilling system Length tramming Width Height tramming Turning radius Gross weight (basic rig+RHS)

• Hydraulically driven water booster pump for high flushing capacity • Cable reel and collector • Smart oil leakage shut-down and distributed hydraulics at the drilling unit • I-frame attached positioning and drilling unit for high visibility and safety for operator when working under FOPS-approved roof

5650 5000

Main specifications Simba M6 C

3770

150 8520

Stinger extension 2000

A-A

M6

A

73

DRILL RIG SPECIFICATION

3050

Simba M7 C

2900

3740

Illustration shows rig with optional equipment mounted All dimensions in mm

4000 11560

Production drilling rig with hydraulic tophammer rock drill. Rig Control System, RCS, provides efficient, productive and high precision long hole drilling. Drilling unit is mounted on a BUT 35 boom for maximum reach and flexibility. Ring drilling with parallel holes upwards/ downwards up to 5.5 m apart. Hole diameter 51–  89 (102) mm. Hole depth up to 51 m, with optional RHS 27.

Features • Rig Control System, RCS with interactive operators control panel. Ergonomic design. Proportional move ments in the levers for smooth and precise positioning. Integrated statistics, diagnostics and log data. Up to five different pre-set settings of drilling parameters. PCMCIA-card interface for transfer of drill plans, log files and storage of parameter files for optimal drill settings. • Rod Handling System, RHS 17 • Rock drill, COP 1800-series or the COP 2550 UX for larger hole range and tougher rock conditions • Stinger mounted directly on the feed beam gives a sturdy set up with less possible hole deviation and less stress on the drilling unit • Mine adapted carrier with high ground clearance, articulated steering and four wheel drive for easy manoeuvring in narrow drifts and steep ramps • Turbo charged water cooled diesel engine with catalyzer • ABC Basic with semi automatic drilling and angle reading instrument • FOPS-approved telescopic protection roof

74

• FOPS-approved cabin • ABC Regular, one hole automatics • Cabin lift and tilt system • Boom Alignment Laser, BAL • Full Drill Data Handling, including DPH and MWD • Drill Plan Handling, DPH • Void Detection, VD • Breakthrough Automatic Stop, BAS • Remote operating kit. Line Of Sight, LOS • Rig Remote Access, RRA • Rod Handling System, RHS 27 • Water mist flushing • Extractor unit (back hammering) for COP 1800-series • Automatic or central lubrication system for the positioning and drilling unit • Rig alignment laser • Fire suppression system, Ansul or Forrex - manual, check fire or automatic • Water hose reel • Remote operating kit. Line Of Sight, LOS

Visit www.atlascopco.com/cmt for more information Working range Simba M7 C Dimensions in mm

0

5 11

6140

Parallell holes with 0o boom-lift 35o boom-swing Coverage area 1100x4690 mm

700

850 Stinger extension 1200 (900) Feed extension

00

o

10

90o

25o

45o

35o 360o Dimensions with 45o boom-lift 25o boom-swing

150 3900

1600

2000 Stinger extension

Dimensions with 0o boom-lift 35o boom-swing

900

1 x COP 1838ME 1 x BMH 214, 215, 216 1 x BHR 30 1 x 1 600 mm extension 1 x BSJ8-200 1 x BSJ8-115 1 x 2x55 kW RCS 11,700 mm 2,210 mm 2,920 mm 6,250/3,800 mm app. 21,000 kg

16

Rock drill Feed Rotary actuator Boom BUT 35BB Stinger backward on feed Stinger forward on feed Power pack Drilling system Length tramming Width Height tramming Turning radius Gross weight (basic rig+RHS)

Main optional equipment

7850

Main specifications Simba M7 C

• Hydraulically driven compressor for rock drill lubrication • Hydraulically driven water booster pump for high flushing capacity • Cable reel and collector • Smart oil leakage shut-down and distributed hydraulics at the drilling unit • Boom mounted positioning and drilling unit. High visibility and safety for operator when working under FOPS-approved roof

Production Drilling in Underground Mining

DRILL RIG SPECIFICATION

2360 - 3060

Simba L3 C

2900

Production drilling rig with hydraulic tophammer rock drill. Rig Control System, RCS, provides efficient, productive and high precision long hole drilling. Ring drilling with parallel holes upwards/downwards up to 1.5 m apart. Hole diameter 89 –127 mm. Hole depth up to 51 m, with optional RHS 27.

Features • Rig Control System, RCS with interactive operators control panel. Ergonomic design. Proportional movements in the levers for smooth and precise positioning. Integrated statistics, diagnostics and log data. Up to five different pre-set settings of drilling parameters. PCMCIA-card interface for transfer of drill plans, log files and storage of parameter files for optimal drill settings. Trolley mounted control panel for flexible operators environment. • Rod Handling System, RHS 17 • Rock drill, COP 4050MUX • Stingers mounted directly on the feed beam gives a sturdy set up with less possible hole deviation and less stress on the drilling unit • Mine adapted carrier with high ground clearance, articulated steering and four wheel drive for easy manoeuvring in narrow drifts and steep ramps • Turbo charged water cooled diesel engine with catalyzer • ABC Basic with semi automatic drilling and angle reading instrument • FOPS-approved telescopic protection roof

Main optional equipment • FOPS-approved cabin • ABC Regular, one hole automatics • ABC Total, full fan automatics, including Full Drill Data Handling and Breakthrough Automatic Stop • Full Drill Data Handling, including DPH and MWD • Drill Plan Handling, DPH • Void Detection, VD • Breakthrough Automatic Stop, BAS • Rig Remote Access, RRA • Rod Handling System, RHS 27 • Water mist flushing • Bit changer • Automatic or central lubrication system for the positioning and drilling unit • Rig alignment laser • Fire suppression system, Ansul or Forrex - manual, check fire or automatic • Water hose reel • Turntable +/- 20°

Visit www.atlascopco.com/cmt for more information

Working range Simba L3 C

Production Drilling in Underground Mining

A Dimensions in mm

Stinger extension

o

R

30

29

70

30 o

1200 (900)

1500 (PH)

(R

D)

Feed extension

RD = Ring drilling PH = Parallel holes

380o 1825

1 x COP 4050MUX 1 x BMH 244, 245, 246 1 x BHR 60-2 1 x BHT 150 1 x BSJ8-200 1 x BSJ8-150 2 x 75 kW RCS 10,500 mm 2,350 mm 2,875/2,965 mm 6,300/3,800 mm app. 21,000 kg

1150 900

Rock drill Feed Rotary actuator Slide table Stinger backward on feed Stinger forward on feed Power pack Drilling system Length tramming Width Height tramming/roof up Turning radius Gross weight (basic rig+RHS)

All dimensions in mm

• Hydraulically driven compressor for rock drill lubrication • Hydraulically driven water booster pump for high flushing capacity • Cable reel and collector • Smart oil leakage shut-down and distributed hydraulics at the drilling unit

4915

Main specifications Simba L3 C

2550 3000

3740

150 7440 L3

Stinger extension 2000

A-A A

75

DRILL RIG SPECIFICATION

3050

Simba L6 C

2900

3740

Production drilling rig with hydraulic tophammer rock drill. Rig Control System, RCS, provides efficient, productive and high precision long hole drilling. Ring drilling with parallel holes upwards/downwards up to 3 m apart. Hole diameter 89–127 mm. Hole depth up to 51 m, with optional RHS 27.

Features • Rig Control System, RCS with interactive operators control panel. Ergonomic design. Proportional movements in the levers for smooth and precise positioning. Integrated statistics, diagnostics and log data. Up to five different pre-set settings of drilling parameters. PCMCIA-card interface for transfer of drill plans, log files and storage of parameter files for optimal drill settings. • Rod Handling System, RHS 17 • Rock drill, COP 4050MUX • Stingers mounted directly on the feed beam gives a sturdy set up with less possible hole deviation and less stress on the drilling unit • Mine adapted carrier with high ground clearance, articulated steering and four wheel drive for easy manoeuvring in narrow drifts and steep ramps • Turbo charged water cooled diesel engine with catalyzer • ABC Basic with semi automatic drilling and angle reading instrument • FOPS-approved telescopic protection roof • Hydraulically driven compressor for rock drill lubrication

Main optional equipment • FOPS-approved cabin • ABC Regular, one hole automatics • ABC Total, full fan automatics, including Full Drill Data Handling and Breakthrough Automatic Stop • FOPS-approved cabin • Full Drill Data Handling, including DPH and MWD • Drill Plan Handling, DPH • Void Detection, VD • Breakthrough Automatic Stop, BAS • Rig Remote Access, RRA • Rod Handling System, RHS 27 • Water mist flushing • Extractor unit (back hammering) COP 4050 MUX • Bit changer • Automatic or central lubrication system for the positioning and drilling unit • Rig alignment laser • Fire suppression system, Ansul or Forrex - manual, check fire or automatic • Water hose reel • Remote operating kit, Line of sight (LOS)

Visit www.atlascopco.com/cmt for more information Working range Simba L6 C A 3000 (PH)

Dimensions in mm

Stinger extension 1150 900

RD = Ring drilling PH = Parallel holes

Feed extension 1200 (900) 45 o

o

30

R 2760

(RD)

o

45

45 o

380o

2780

D)

(R

1 x COP 4050MUX 1 x BMH 244, 245, 246 1 x BHR 60-2 ±1.5 m 1 x BSJ8-200 1 x BSJ8-150 2 x 75 kW RCS 10,400 mm 2,210 mm 3,200 mm 3,200 mm 6,300/3,800 mm app. 23,000 kg

80 48

76

3770

R

Rock drill Feed Rotary actuator I-frame with pendulum arm Stinger backward on feed Stinger forward on feed Power pack Drilling system Length tramming Width Height tramming Height Turning radius Gross weight (basic rig+RHS)

Illustration shows rig with optional equipment mounted All dimensions in mm

• Hydraulically driven water booster pump for high flushing capacity • Cable reel and collector • Smart oil leakage shut-down and distributed hydraulics at the drilling unit • I-frame attached positioning and drilling unit. High visibility and safety for operator when working under FOPS-approved roof

5650 5000

Main specifications Simba L6 C

2010

150 8520

Stinger extension 2000

A-A

L6

A

Production Drilling in Underground Mining

DRILL RIG SPECIFICATION

Cabletec LC (5109)

5236 4003

910

643

19.5°

12.2°

3103 3053 2924

www.atlascopco.com

2090

1490

1800

2200 14042

143

897

All dimensions in mm

Cable bolting rig with two boom system, enabling concurrent drilling and cable installation. The Rig Control system, RCS, provides efficient, productive and high precision long hole drilling. On-board automatic cement system for unique grout quality control and a high capacity steel strand reel.

Main optional equipment

Features • Rig Control System, RCS, with interactive operators control panel • ABC Regular with one hole automatics • COP 1800-series high performance rock drill • Well-proven Simba production drilling unit • Rod Handling System, RHS 17 • FOPS-approved telescopic protective roof • Hydraulic production drilling boom and telescopic cable bolting boom, both with proportional movements • Mine adapted carrier with high ground clearance, articulated steering and four wheel drive for easy manoeuvring • Turbo-charged, water-cooled diesel engine with catalyzer • Cable reel and collector • Cable and cement hose feeding system • Cable bending mechanism and cable cutter • Cable pusher for installation of twin cables

Main specifications Cabletec LC Rock drill Feed Rotary actuator Boom BUT 35BS Stinger backward on feed Stinger forward on feed Power pack Drilling system Length Width Height Turning radius Gross weight

• Fully automatic cement handling unit with RCS- controlled W/C ratio and onboard silo for cement storage • Double acting piston pump • Dust suppression system

• • • • • • • • • • • • • • • • • • •

FOPS-approved cabin Lubrication surveillance kit Automatic boom lubrication kit Central boom lubrication kit Automatic lubrication kit, drilling unit/boom Water mist flushing system Water hose reel Water hose Rig Remote Access, RRA Breakthrough Automatic System, BAS Drill Plan Handling, DPH Full Drill Data Handling, FDDH Boom Alignment Laser, BAL Text Message System, TMS Automatic Parallel Holding, APH Void Detection, VD Remote Cradle/Feed Control, RC/FC Fire suppression system Ansul or Forrex – manual, check fire or automatic Remote operating kit, Line Of Sight, LOS

Visit www.atlascopco.com/cmt for more information

Working range Cabletec LC 1 x COP 1838ME 1 x BMH 214/215/216 1 x BHR 30 1 x 1,600 mm extension 1 x BSJ8-200 1 x BSJ8-115 1 x 95 kW RCS 14,042 mm 2,750 mm 3,100 mm 7,400/4,500 mm app. 29,000 kg

Production Drilling in Underground Mining

12 m 10 8 6 4 2 0 2 8

6

4

2

0

2

4

6

8m

77

HYDRAULIC ROCK DRILL SPECIFICATIONS

COP 1838ME/MEX Tophammer rock drill for hole diameter range 51– 89 mm COP 1838ME is specially suitable for small to medium hole sizes. Adjustable stroke length makes it possible to adjust impact rate and energy to actual rock conditions and hole size. Powerful, stepless variable and reversible rotation motor gives high torque and excellent speed control. The efficient reflex damping system of the COP 1800 series is called “dual damping” due to its high efficiency and double acting function. As the feed and the boom are not subjected to unnecessary strain, the entire drill string will give you longer service life.

The automatic tightening system of the drill string results in straighter holes and optimum penetration. COP 1838MEX and COP 1838HEX have built in hydraulic extractor. Technical data

COP 1838ME/MEX

COP 1838 HE/HEX

Weight Length Impact power, max. Impact rate Hydraulic pressure, max. Rotation speed, max. Rotation pressure, max. Rotation motor size Drill steel torque, max. Flushing water pressure Lubricating air (at the drill), max. Shank adapter

170/229 kg 1,008/1,206 mm 18 kW 60 Hz 230 bar 210 rpm 210 bar 07 1,000 Nm 20 bar 2 bar R32, T38, T45

176/235 kg 1,098/1,296 mm

18 kW 50 Hz 230 bar 140 rpm 140 bar 09 1,100 Nm 20 bar 2 bar T38, T45

COP 2550UX Tophammer rock drill for hole diameter range 76 –115 mm The COP 2550 is among the strongest rock drills on the market for use with the T51 drill steel. It is specially designed for heavy uninterrupted production. Instead of built-in flushing head, the COP 2550UX has a separate flushing head mounted at the front. The efficient dual damping system makes it possible to use even higher impact power without compromising the service life of the drill steel. The choice of two stroke positions provides the best piston frequency and penetration for the rock in

question. Separate lubrication of the shank adapter and front bushing ensures adequate lubrication/cooling during heavy use and prevents contaminants from penetrating the drill at the front. Pressurized mating surfaces with lubricating air prevent the ingress of dirt and damp into the drill. The rock drill is supplied with a powerful hydraulic extractor to save time and drill steel. Technical data

COP 2550UX

Weight Length Impact power, max. Impact rate Hydraulic pressure, max. Rotation speed, max. Rotation pressure, max. Rotation motor size Drill steel torque, max. Flushing water pressure Lubricating air (at the drill), max. Shank adapter

249 kg 1,340 mm 25 kW 42-55 Hz 230 bar 140 rpm 140 bar 09/10 1,380 Nm 20 bar 4 bar T51, ST58

COP 4050MUX Tophammer rock drill for hole diameter range 89 –127 mm A heavy-sized hydraulic tophammer with an impact output of up to 40 kW. It is specially designed for drilling underground. Instead of built-in flushing head, the COP 4050MUX has a separate flushing head mounted at the front. It is equipped with two powerful hydraulic rotation motors which minimizes the risk of jamming. Impact and power levels are easily adjustable to prevailing rock conditions for achieving good hole quality, long drill steel life and an overall high

78

productivity. COP 4050MUX has a built-in automatic extractor as standard for interruption-free production. It is obvious that the extractor is an investment which soon pays for itself in difficult ground conditions through fewer disruptions, better hole quality and increased steel life. Technical data

COP 4050MUX

Weight Length Impact power, max. Impact rate Hydraulic pressure, max. Rotation speed, max. Rotation pressure, max. Rotation motor size Drill steel torque, max. Flushing water pressure Lubricating air (at the drill), max. Shank adapter

450 kg 1,530 mm 40 kW 53-62 Hz 230 bar 95 rpm 120 bar 2 x 10 2 x 1,325 Nm 20 bar 4 bar ST58, ST68

Production Drilling in Underground Mining

TOPHAMMER DRILLING EQUIPMENT

Production drilling Drill bit design

-5076

-5076-45

Flat front bit with spherical buttons. Standard skirt. Ideal for medium-hard rock when the rock formation causes heavy gauge wear on the bit. Can also be used in very hard and abrasive rock formations.

Flat front bit with spherical buttons. Retrac skirt. To be used in the same applications as -5076 when you have rock formations that also create hole deviations.

-6076-67

-6076-45-67

Drop centre bit with ballistic buttons. Standard skirt. Designed for medium-hard rock. Bits with ballistic buttons perform especially well in non-abrasive or medium abrasive rock formations.

Drop centre bit with ballistic buttons. Retrac skirt. To be used in the same applications as -6076-67 when you have rock formations that also create hole deviations.

- 5 XXX Flat face button bit -XXXX- 67 Ballistic buttons

- 6 XXX Drop centre button bit

-XXXX- 66 Full-ballistic buttons

-XXXX- 45 Retrac skirt

Production Drilling in Underground Mining

-6076

-6076-45

Drop centre bit with spherical buttons. Standard skirt. Perfect in slightly more abrasive formations where there is accelerated button wear or in medium to hard rock when ballistic buttons have a tendency to break.

Drop centre bit with spherical buttons. Retrac skirt. Use in the same applications as -6076 when you have rock formations that also create hole deviations.

-5127-21

-6089-21-67

-6076-21-45-67

Model -21, a heavy duty bit with larger gauge buttons. Flat or drop centre front. Retrac or standard skirt. Ballistic or spherical buttons. A new bit design for hard to very hard abrasive rock. The asymmetrical button pattern gives excellent rock crushing. A shorter head and larger clearing angle allow for better flushing of cuttings. Model -20 is used for the same applications.

Please observe that all button bits are manufactured oversized 1.0–1.5 mm, meaning that for example a 45 mm bit is at least 46 mm as new and a 89 mm bit 90 mm. This is done because of the fast initial wear on button bits. When it is of importance, also consider that the hole is always 1–3 mm bigger than the bit dimension depending on rock formation.

79

TOPHAMMER DRILLING EQUIPMENT

Production drilling

-6089-35-67

-6102-36

Model -35 and Model -36 Guide bits for the TDS tube drilling system. The Model -35 and -36 guide bits should be used in rock formations that create hole deviations.

-6102-41

Soft rock bit -66

Model -41 Standard bit for T60 system. This new bit design for T60 system with spherical buttons is created for drilling in very hard and abrasive rock formations. The flushing is concentrated to the front of the bit to get maximal flushing capacity.

Full-ballistic button bit. The two types of fullballistic button bits, model 5xxx-47-66 and model 6xxx-21-66 are developed specially for drilling in soft formations. The penetration rate is very fast due to the high button protrusion. Excellent flushing concentrated to the front

Insert bits Cross- and X-type bits. Traditional chisel bits in cross- and X-type formations for extremely abrasive rock. Ideal for soft formations that cause snakeskin problems for carbide. Produce straight holes. X-type bits are used for larger hole dimensions.

80

Production Drilling in Underground Mining

TOPHAMMER DRILLING EQUIPMENT

Production drilling Shank adapter

Coupling

R32 (11∕4") Round drifter rod

Button bit

Round extension rod

Guide button bit Retrac button bit

Round Speedrod

Cross-type bit Round guide rod

Guide tube

Drill bit design

-5057-20

-5xxx-37-45-67

-5xxx-27

5076-42-24

5051-39

-5xxx-37-67

-5xxx-37-66

-5064-45

-6064

-6064-45

-5xxx-37-30-67

Cross-type bit

Please note text on page 79 42 re. finished finished hole hole size. size.

Production Drilling in Underground Mining

81

TOPHAMMER DRILLING EQUIPMENT

Production drilling

R32 (11∕4")

Drill bit Diameter mm

Product No.

Product code

inch

No. of buttons

Buttons × button diameter (mm) Gauge

Centre

Gauge buttons angle°

Flushing hole Side

Centre

Weight approx. kg

BUTTON BIT - Spherical buttons 48

17∕8

90504374

103-5048-27,39-20

7

5×11

2×9

35°

2

1

1.0

48

17∕8

90509461

103-5048-37,39-20

9

6×10

3×8

40°

1

3

0.9

51

2

90504566

103-5051-27,39-20

7

5×11

2×10

35°

2

1

1.0

51

2

90510451

103-5051-34,39-20

8

6×10

2×10

40°

2

2

1.0

51

2

90509465

103-5051-37,39-20

9

6×10

3×9

40°

1

3

1.0

51

2

90510302

103-6051,49-20

9

6×10

3×9

30°

–

3

1.0

51

2

90510308

103-6051-45,49-20

9

6×10

3×9

30°

–

3

1.2

51

2

90514633

103-6051-45-67,49-20

9

6x10

3x9

35°

–

3

1.2

54

21∕8

90509480

103-5054-37,39-20

9

6×10.5

3×10

35°

1

4

1.0 1.1

57

2¼

90510453

103-5057-20,39-20

9

6×11

3×9

35°

–

3

57

2¼

90514267

103-5057-37-45,49-20

9

6×10.5

3×9

35°

–

3

1.5

64

2½

90510303

103-5064,49-20

12

8×10

4×10

40°

–

2

1.6 2.2

64

2½

90510381

103-5064-45,49-20

12

8×10

4×10

40°

–

2

64

2½

90510328

103-6064,49-20

10

6×11

3×10, 1×10

35°

–

3

1.5

64

2½

90510364

103-6064-45,49-20

10

6×11

3×10, 1×10

35°

–

3

2.2

76

3

90510353

103-5076,49-20

12

8×11

4×11

40°

–

2

1.8

76

3

90514373

103-5076-42-24,49-20

10

9×12.7

1×12.7

35°

1

3

2.0

76

3

90510504

103-6076-45,49-20

13

8×11

4×11, 1×11

35°

1

4

3.5

BUTTON BIT - Ballistic buttons 48

17∕8

90509464

103-5048-37-67,39-20

9

6×10

3×8

40°

1

3

0.9

48

17∕8

90509463

103-5048-37-30-67,39-20

8

6×10

2×8

25°

1

3

1.0

51

2

90509466

103-5051-37-67,39-20

9

6×10

3×9

40°

1

3

1.0 1.2

51

2

90510836

103-5051-37-45-67,39-20

9

6×10

3×9

40°

1

3

54

21∕8

90509481

103-5054-37-67,39-20

9

6×10

3×9

40°

1

3

1.0

57

2¼

90510454

103-5057-20-67,39-20

9

6×11

3×9

35°

–

3

1.1

64

2½

90510327

103-5064-67,49-20

12

8×10

4×10

40°

–

2

1.6

76

3

90510821

103-5076-42-24-67,49-20

10

9×12.7

1×12.7

35°

1

3

2.0

8

6×9

2×9

40°

–

2

0.8

BUTTON BIT - Full-ballistic buttons (Soft rock bit) 48

17∕8

90514714

103-5048-34-66,39-20

48

7

1 ∕8

90514135

103-5048-37-66,39-20

9

6×9

3×9

40°

1

3

0.8

51

2

90514715

103-5051-34-66,39-20

8

6×10

2×10

40°

–

2

0.9

51

2

90514136

103-5051-37-66,39-20

9

6×10

3×9

40°

1

3

0.8

Insert

CROSS-TYPE BIT

Width (mm)

Height (mm)

48

17∕8

90510658

103-7048-38,02-17

14.0

22.0

4

1

1.1

51

2

90514248

103-7051-38,02-17

14.0

22.0

4

1

1.2

51

2

90510551

103-7051-38-45,02-17

14.0

22.0

4

1

1.7

57

2¼

90514239

103-7057,02-17

10.3

19.5

4

1

1.3

64

2½

90001719

103-7064,08-17

10.3

19.5

4

1

1.4

90500049

103-8076,08-16

14.0

26.0

4

1

1.7

X-TYPE BIT 76

82

3

Production Drilling in Underground Mining

TOPHAMMER DRILLING EQUIPMENT

Production drilling

R32 (11∕4")

Extension rod R32 (1¼") round rod

Fully carburized (C) / Surface hardened (SH). Length mm

foot/inch

Product No.

Product code Fully carburized

Surface hardened

Weight approx. kg

915

3'

90550062

203-2509-C,02

4.8

1000

3'33∕8"

90500360

203-2510-C,02

6.0

1220

4'

90000138

203-2512-C,02

6.5

1525

5'

90509485

203-2515-C,02

8.7

1830

6'

90000139

203-2518-C,02

9.8

2435

8'

90000989

203-2524-C,02

2435

8'

90515400

3050

10'

90000990

3050

10'

90515401

3660

12'

90509565

3660

12'

90515402

13.2 203-4524-SH,03

203-2531-C,02

13.9 16.6

203-4531-SH,03 203-2537-C,02

16.6 20.0

203-4537-SH,03

20.8

R32 (1¼") round Speedrod

Fully carburized (C). D = 46 mm.

Length (L) mm

foot

915

3

Product No. 90503329

Product code Fully carburized

Surface hardened

203-2509-MF-C,02

Weight approx. kg 5.5

1220

4

90500834

203-2512-MF-C,02

7.3

1525

5

90500627

203-2515-MF-C,02

9.0

1830

6

90500628

203-2518-MF-C,02

10.6

2435

8

90502259

203-2524-MF-C,02

14.0

Both surface hardened and fully carburized 3050

10

90515604

203-2531-MF,29

18.6

3660

12

90515605

203-2537-MF,29

22.1

4270

14

90515606

203-2543-MF,29

25.6

Drifter rod R32 (1¼") round rod

Fully carburized. Length

Product No.

Product code

Weight approx. kg

13'1½"

90002394

203-2540-03-C,02

21.7

14'1 ∕8"

90000933

203-2543-03-C,02

23.4

mm

foot/inch

4000 4310

5

Production Drilling in Underground Mining

83

TOPHAMMER DRILLING EQUIPMENT

Production drilling

R32 (11∕4")

Coupling

Full bridge -57. Diameter

Length

Product No.

Weight approx. kg

Product code

mm

inch

mm

inch

42

121∕32

150

57∕8

90502643

303-0042,00

0.9

44

123∕32

150

57∕8

90002107

303-0044,00

1.0

44

1 ∕32

160

6 ∕16

90505395

303-0044-57,00

1.2

23

5

Guide Tube

Hole diameter

Tube diameter

Length (L)

Product code

4

94502681

203-7112,10

10.0

5

94502658

203-7115,10

12.5

1830

6

94502659

203-7118,10

14.2

3050

10

94502660

203-7131,10

25.0

inch

mm

inch

mm

foot

51–57

2–2¼

45

1¾

1220

51–57

2–2¼

45

1¾

1525

51–57

2–2¼

45

1¾

51–57

2–2¼

45

1¾

84

Weight approx. kg

Product No.

mm

Production Drilling in Underground Mining

TOPHAMMER DRILLING EQUIPMENT

Production drilling

R/T38 (11∕2") Hex. extension rod light equipment

T38

Button bit

Coupling

Shank adapter

Retrac button bit

Round extension rod

Round Speedrod

Cross-type bit

Round guide rod

X-type bit

Dome reaming bit

Guide tube

R38

Button bit Shank adapter

Coupling

Round extension rod X-type bit

Drill bit design

-5076

-5076-21

Dome reaming bit

-5070-21-45

Cross-type

-5089-21-67

5076-47

-6064-21-67

-6076-45-67

-6076-21-66

-6102-21

Please Pleasenote notetext texton onpage page79 42re. re.finished finishedhole holesize. size.

X-type

Drill bit Diameter

Product code

Product No.

mm inch

R38 thread

T38 thread

No. of buttons

Buttons × button diameter (mm) Gauge

Centre

Gauge buttons angle°

Weight approx. kg Centre

Flushing hole Side

BUTTON BIT - Spherical buttons 64

2½

90510304

64

2½

90510305

64

2½

64

2½

64

104-5064,49-20

12

8×10

4×10

40°

–

2

1.6

135-5064,49-20

12

8×10

4×10

40°

–

2

1.6

90510309

135-5064-45,49-20

12

8×10

4×10

40°

–

2

1.9

90510316

135-5064-20,49-20

9

6×12.7

3×11

35°

1

1

1.9

2½

90513748

135-5064-21,49-20

10

6×11

4×10

35°

1

2

1.6

64

2½

90510307

135-6064,49-20

10

6×11

3×10, 1×10

35°

–

3

1.7

64

2½

90510311

135-6064-45,49-20

10

6×11

3×10, 1×10

35°

–

3

2.3

64

2½

90510347

135-6064-21,49-20

10

6×12.7

3×10, 1×8

25°

–

3

1.7

Cont. next page

Production Drilling in Underground Mining

85

TOPHAMMER DRILLING EQUIPMENT

Production drilling Diameter

Product code

Product No.

mm inch

R38 thread

T38 thread

R/T38 (11∕2") No. of buttons

Buttons × button diameter (mm) Gauge

Centre

Gauge buttons angle°

Weight approx. kg Centre

Flushing hole Side

BUTTON BIT - Spherical buttons 70

2¾

90510349

135-5070,49-20

12

8×11

4×11

40°

–

2

2.0

70

2¾

90510350

135-5070-20,49-20

11

6×12.7

5×11

35°

2

1

2.3

70

2¾

90510352

135-6070,49-20

10

6x11

3x11, 1x9

35°

–

3

1.9

70

2¾

90510707

135-6070-21,49-20

10

6×12.7

3×10, 1×10

35°

–

3

1.7

70

2¾

90514157

135-6070-21-45,49-20

10

6×12.7

3×10, 1×10

35°

–

3

2.3

76

3

90510318

12

8×11

4×11

40°

–

2

2.6

104-5076,49-20

76

3

90510319

135-5076,49-20

12

8×11

4×11

40°

–

2

2.2

76

3

90510366

135-5076-45,49-20

12

8×11

4×11

40°

–

2

3.1

76

3

90510321

135-5076-20,49-20

11

6×12.7

5×11

35°

2

1

2.5

76

3

90513749

135-5076-21,49-20

13

8×12.7

5×11

35°

1

2

2.3

76

3

90515235

135-5076-47,49-20

13

8×11

5×11

35°

1

4

2.2

76

3

90510330

135-6076,49-20

10

6×12.7

3×11, 1×11

35°

1

3

2.6

76

3

90510369

135-6076-45,49-20

13

8×11

4×11, 1×11

35°

1

4

3.5

76

3

90513806

135-6076-21,49-20

13

8×12.7

4×11, 1×11

35°

–

4

2.4

76

3

90510810

135-6076-21-45,49-20

13

8×12.7

4×11, 1×11

35°

–

4

3.3

89

3½

90510323

12

8×12.7

4×12.7

40°

–

2

3.3

89

3½

90510324

104-5089,49-20 135-5089,49-20

12

8×12.7

4×12.7

40°

–

2

3.2

89

3½

90510367

135-5089-45,49-20

12

8×12.7

4×12.7

40°

–

2

5.2

89

3½

90515273

135-5089-47,49-20

16

10×11

6×11

35°

1

4

3.4

89

3½

90510332

135-6089,49-20

11

6×12.7

3×11, 2×11

35°

1

3

3.0

89

3½

90513808

135-6089-21,49-20

13

8×12.7

4×11, 1×11

35°

–

4

3.0

89

3½

90515287

135-6089-21-45,49-20

13

8x12.7

4x11, 1x11

35°

–

4

4.6

102

4

90510329

135-5102,49-20

12

8×14.5

4×14.5

40°

–

2

4.0

102

4

90515369

135-5102-47,49-20

14

8×14.5

6×12.7

35°

1

4

4.3

102

4

90513810

135-6102-21,49-20

13

8×14.5

4×12.7, 1×12.7

35°

–

4

3.9

127

5

90513776

135-5127-42-24,49-20*

19

18×12.7

1×12.7

35°

1

3

5.2

135-5064-67,49-20

12

8×10

4×10

40°

–

2

1.6

BUTTON BIT - Ballistic buttons 64

2½

90510413

64

2½

90510365

135-5064-45-67,49-20

12

8×10

4×10

40°

–

2

1.9

64

2½

90510306

135-6064-67,49-20

10

6×11

3×10, 1×10

35°

–

3

1.6

64

2½

90510368

135-6064-45-67,49-20

10

6×11

3×10, 1×10

35°

–

3

2.3

64

2½

90510524

135-6064-21-67,49-20

10

6×12.7

3×10, 1×8

25°

–

3

1.8

64

2½

90513805

135-6064-21-45-67,49-20

10

6×12.7

3×10, 1×8

25°

–

3

2.2

64

2½

90514631

135-6064-48-45-67,49-20

13

8x10

4x10, 1x7

35°

–

4

2.0

70

2¾

90510351

135-6070-67,49-20

10

6×11

3×11, 1×9

35°

–

3

1.9

70

2¾

90510384

135-6070-45-67,49-20

10

6×11

3×11, 1×9

35°

–

3

2.4

70

2¾

90513832

135-6070-21-67,49-20

10

6×12.7

3×10, 1×10

35°

–

3

1.7

76

3

90513760

135-5076-21-67,49-20

13

8×12.7

5×11

35°

1

2

2.3

76

3

90510312

135-5076-45-67,49-20

12

8×11

4×11

40°

–

2

3.1

76

3

90510331

135-6076-67,49-20

10

6×12.7

3×11, 1×11

35°

1

3

2.5

76

3

90510370

135-6076-45-67,49-20

13

8×11

4×11, 1×11

35°

1

4

3.5

76

3

90513807

135-6076-21-67,49-20

13

8×12.7

4×11, 1×11

35°

–

4

2.4

76

3

90510811

135-6076-21-45-67,49-20

13

8×12.7

4×11, 1×11

35°

–

4

3.3

135-5089-21-67,49-20

14

8×12.7

6×12.7

35°

1

89 3½ 90513763 * For reaming, reversed flushing.

86

2 3.1 Cont. next page

Production Drilling in Underground Mining

TOPHAMMER DRILLING EQUIPMENT

Production drilling Diameter

Product code

Product No.

mm inch

R38 thread

T38 thread

R/T38 (11∕2") Buttons × button diameter (mm)

No. of buttons

Gauge

Centre

Gauge buttons angle°

Weight approx. kg Centre

6×12.7

3×11, 2×11

35°

1

3

3.1

Flushing hole Side

BUTTON BIT - Ballistic buttons 89

3½

90510355

135-6089-67,49-20

89 89

11

3½

90510654

135-6089-45-67,49-20

14

8×11

4×11, 2×9

35°

1

4

5.0

3½

90513809

135-6089-21-67,49-20

13

8×12.7

4×11, 1×11

35°

–

4

3.0

102

4

90513762

135-6102-21-67,49-20

13

8×14.5

4×12.7, 1×12.7

35°

–

4

3.9

127

5

90513775

135-5127-42-24-67,49-20*

19

18×12.7

1×12.7

35°

1

3

5.2

135-6076-21-66,49-20

13

8×12.7

4×11, 1×11

35°

–

4

2.5

BUTTON BIT - Full-ballistic buttons (Soft rock bit) 76

3

90514297

Insert

CROSS-TYPE BIT 64

2½

Width (mm)

Height (mm)

90002098

135-7064,08-16

14.0

25.0

4

1

1.9

90002256

135-8064,08-16

14.0

25.0

4

1

1.9

14.0

26.0

4

1

2.5

14.0

26.0

4

1

2.5

X-TYPE BIT 64

2½

76

3

90001716

76

3

90002260

104-8076,08-16 135-8076,08-16

* For reaming, reversed flushing.

Extension rod T38 (1½")

Hex. 32 mm (1¼")

T38 (1½")

Light equipment, fully carburized. Rod section 35.8 mm. Length mm

foot/inch

3050

10'

4000

13'1½"

Product code T38 thread

Weight approx. kg

90001962

235-0531-C,02

18.7

90510050

235-0540-C,02

23.6

Product No.

R38 thread

T38 (1½") round Speedrod

Fully carburized. D = 57 mm. Length (L) mm

foot/inch

600

1'115∕8"

Product code T38 thread

Weight approx. kg

90510857

235-4706-MF-C,02

6.0

Product No.

R38 thread

915

3'

90510718

235-4709-MF-C,02

8.3

1220

4'

90510719

235-4712-MF-C,02

10.9

1525

5'

90510720

235-4715-MF-C,02

13.3

1830

6'

90510721

235-4718-MF-C,02

15.8

Production Drilling in Underground Mining

87

TOPHAMMER DRILLING EQUIPMENT

Production drilling

R/T38 (11∕2")

T38 (1½") round Speedrod

Fully carburized. D = 57 mm. Length (L) mm

foot

Product code

Product No.

R38 thread

T38 thread

Weight approx. kg

Both surface hardened and fully carburized 3050

10

90515312

235-4731-MF,29

26.3

3660

12

90515315

235-4737-MF,29

31.5

4270

14

90515570

235-4743-MF,29

36.9

4880

16

90515571

235-4749-MF,29

41.9

R/T38 (1½") round rod

Fully carburized (C) / Surface hardened (SH). Length mm

foot/inch

Product code

Product No.

R38 thread

T38 thread

Weight approx. kg

Surface hardened 1830

6'

90590109

204-2718-SH,03

14.9

3050

10'

90515405

204-4731-SH,03

24.3

3050

10'

90515289

235-4731-SH,03

24.8

3660

12'

90515288

235-4737-SH,03

29.0

4270

14'

90515291

235-4743-SH,03

34.7

280

11"

90504090

610

2'

90502448

235-2706-C,02

5.0

1220

4'

90500622

235-2712-C,02

10.0

204-2702-C,02

2.0

T38 (1½") round rod with double thread

Length mm

foot

Product No.

Product code R38 thread

T38 thread

Weight approx. kg

Surface hardened 3050

10

90515292

235-4731-95-SH,03

27.0

3660

12

90515290

235-4737-95-SH,03

30.0

88

Production Drilling in Underground Mining

TOPHAMMER DRILLING EQUIPMENT

Production drilling

R/T38 (11∕2")

Drifter rod For one rod drilling drifter rods can be used.

Guide rod T38 (1½") guide Speedrod

Fully carburized. D = 57 mm. Length (L) mm

foot

3660

12

Product No.

Product code T38 thread

Weight approx. kg

90515575

235-4937-MF,29

44.8

Guide tube

Hole diameter Tube diameter

Length (L)

Product No.

Product code T38 thread

Weight approx. kg

4

94502648

235-7012,10

12.6

1525

5

94000051

235-7015,10

14.0

1830

6

94000052

235-7018,10

17.4

3050

10

94000053

235-7031,10

28.3

3660

12

94000054

235-7037,10

32.8

3660

12

94502622

235-6937,10

51.0

mm

inch

mm

inch

mm

64

2½

56

21∕8

1220

64

2½

56

1

2 ∕8

64

2½

56

21∕8

64

2½

56

21∕8

64

2½

56

21∕8

76

3

64

2½

foot

Coupling

Diameter

Length mm

inch

Product No.

mm

inch

52

21∕16

190

7½

90503178

55

25∕32

170

6¾

90000168

55

25∕32

170

6¾

90001964

55

5

2 ∕32

55

25∕32

180

1

7 ∕8

90505396

180

71∕8

90503003

Product code R38 thread

T38 thread 335-0052,00

304-0055,00

1.8 1.7

335-0055,00

1.7

335-0055-57,00

1.9

304-0055-57,00

Production Drilling in Underground Mining

Weight approx. kg

1.9

89

TOPHAMMER DRILLING EQUIPMENT

Production drilling

T45 (13∕4") Hex. extension rod, light equipment

Shank adapter

Button bit

Coupling Round extension rod

Retrac button bit Round Speedrod Dome reaming bit Guide rod

Guide tube

Drill bit design

-5076

-5089-21-67

-6076-45-67

-6089-21-45

-5102-21

-6102

-5076-21-45

-6102-21

-5076-41

-5089-47

-6076

Dome reaming bit

-6102-45-67

Please Pleasenote notetext texton onpage page79 42re. re.finished finishedhole holesize. size.

Drill bit Diameter mm

Product No.

Product code

inch

No. of buttons

Buttons × button diameter (mm) Gauge

Centre

Gauge buttons angle°

Flushing hole Side

Centre

Weight approx. kg

BUTTON BIT - Spherical buttons 70

2¾

90510478

136-6070,49-20

10

6×11

3×11, 1×9

35°

–

3

2.0

70

2¾

90510479

136-6070-45,49-20

10

6×11

3×11, 1×9

35°

–

3

2.1

76

3

90510320

136-5076,49-20

12

8×11

4×11

40°

–

2

2.2

76

3

90510371

136-5076-45,49-20

12

8×11

4×11

40°

–

2

2.8

76

3

90510322

136-5076-20,49-20

11

6×12.7

5×11

35°

2

1

2.6

76

3

90514051

136-5076-21,49-20

13

8×12.7

5×11

35°

1

2

2.4

76

3

90513761

136-5076-21-45,49-20

13

8×12.7

5×11

35°

1

2

2.7

76

3

90515248

136-5076-41,49-20

14

8×12.7

4×11, 2×11

35°

2

2

2.5

76

3

90510333

136-6076,49-20

10

6×12.7

3×11, 1×11

35°

1

2

2.6

76

3

90510313

136-6076-45,49-20

13

8×11

4×11, 1×11

35°

1

4

3.2

76

3

90513750

136-6076-21,49-20

13

8×12.7

4×11, 1×11

35°

–

4

2.4

76

3

90510808

136-6076-21-45,49-20

13

8×12.7

4×11, 1×11

35°

–

4

3.0

Cont. next page

90

Production Drilling in Underground Mining

TOPHAMMER DRILLING EQUIPMENT

Production drilling Diameter mm

Product No.

Product code

inch

T45 (13∕4") No. of buttons

Buttons × button diameter (mm) Gauge

Centre

Gauge buttons angle°

Flushing hole Side

Centre

Weight approx. kg

BUTTON BIT - Spherical buttons 89

3½

90510325

136-5089,49-20

12

8×12.7

4×12.7

40°

–

2

3.3

89

3½

90510418

136-5089-20,49-20

14

8×12.7

6×11

35°

1

1

3.8

89

3½

90510372

136-5089-45,49-20

12

8×12.7

4×12.7

40°

–

2

5.0

89

3½

90515268

136-5089-47,49-20

16

10×11

6×11

35°

1

4

3.0

89

3½

90513751

136-5089-21-45,49-20

14

8×12.7

6×12.7

35°

1

2

4.7

89

3½

90510335

136-6089,49-20

11

6×12.7

3×11, 2×11

35°

1

3

3.5

89

3½

90510374

136-6089-45,49-20

14

8×11

4×11, 2×9

35°

1

4

4.7

89

3½

90513752

136-6089-21,49-20

13

8×12.7

4×11, 1×11

35°

–

4

3.0

89

3½

90510692

136-6089-21-45,49-20

13

8×12.7

4×11, 1×11

35°

–

4

4.2

102

4

90510326

136-5102,49-20

12

8×14.5

4×14.5

40°

–

2

4.4

102

4

90510888

136-5102-21,49-20

14

8×15.8

6×12.7

35°

1

2

3.7

102

4

90510373

136-5102-45,49-20

12

8×14.5

4×14.5

40°

–

2

6.7

102

4

90515364

136-5102-47,49-20

14

8×14.5

6×12.7

35°

1

4

4.1

102

4

90510337

136-6102,49-20

11

6×14.5

3×12.7, 2×12.7

35°

1

3

3.9

102

4

90510392

136-6102-45,49-20

14

8×12.7

4×12.7, 2×12.7

35°

1

4

7.8

102

4

90513811

136-6102-21,49-20

13

8×14.5

4×12.7, 1×12.7

35°

–

4

5.3

102

4

90515366

136-6102-21-45,49-20

13

8×14.5

4×12.7, 1×12.7

35°

–

4

6.4

115

4½

90510409

136-5115,49-20

18

10×12.7

8×12.7

35°

–

2

5.4

115

4½

90515269

136-5115-47,49-20

14

8×14.5

6×14.5

35°

1

4

5.8

115

4½

90510399

136-6115,49-20

14

8×14.5

4×12.7, 2×12.7

35°

1

4

5.0

115

4½

90514660

136-6115-45,49-20

14

8×14.5

4×12.7, 2×12.7

35°

1

4

9.0

127

5

90515253

136-5127-47,49-20

14

8×15.8

6×15.8

35°

–

4

6.6

127

5

90513778

136-5127-42-24,49-20*

19

18×12.7

1×12.7

35°

1

3

5.3

152

6

90513818

136-5152-42-24,49-20*

20

18×14.5

2×14.5

35°

1

3

9.9

BUTTON BIT - Ballistic buttons 70

2¾

90510385

136-6070-45-67,49-20

10

6×11

3×11, 1×9

35°

–

3

2.1

76

3

90514027

136-5076-21-67,49-20

13

8×12.7

5×11

35°

1

2

2.3

76

3

90510386

136-5076-45-67,49-20

12

8×11

4×11

40°

–

2

2.8

76

3

90510334

136-6076-67,49-20

10

6×12.7

3×11, 1×11

35°

1

2

2.6

76

3

90510314

136-6076-45-67,49-20

13

8×11

4×11, 1×11

35°

1

4

3.1

76

3

90510809

136-6076-21-45-67,49-20

13

8×12.7

4×11, 1×11

35°

–

4

3.0

89

3½

90510390

136-5089-45-67,49-20

12

8×12.7

4×12.7

40°

–

2

5.0

89

3½

90510780

136-5089-21-67,49-20

14

8×12.7

6×12.7

35°

1

2

3.3 4.7

89

3½

90514073

136-5089-21-45-67,49-20

14

8×12.7

6×12.7

35°

1

2

89

3½

90510336

136-6089-67,49-20

11

6×12.7

3×11, 2×11

35°

1

3

3.4

89

3½

90510375

136-6089-45-67,49-20

14

8×11

4×11, 2×9

35°

1

4

4.8

89

3½

90515523

136-6089-21-67,49-20

13

8×12.7

4×11, 1×11

35°

–

4

3.1

89

3½

90510772

136-6089-21-45-67,49-20

13

8×12.7

4×11, 1×11

35°

–

4

4.8

102

4

90510889

136-5102-21-67,49-20

14

8×15.8

6×12.7

35°

1

2

3.7

102

4

90515367

136-6102-21-67,49-20

13

8x14.5

4x12.7, 1x12.7

35°

–

4

4.9

102

4

90510376

136-6102-45-67,49-20

14

8×12.7

4×12.7, 2×12.7

35°

1

4

7.8

115

4½

90515263

136-6115-67,49-20

14

8×14.5

4×12.7, 2×12.7

35°

1

4

4.7

115

4½

90515256

136-6115-45-67,49-20

14

8×14.5

6×12.7

35°

1

4

8.1

152

6

90510782

136-5152-42-24-67,49-20*

20

18×14.5

2×14.5

35°

3

3

9.5

* For reaming, reversed flushing.

Production Drilling in Underground Mining

Cont. next page

91

TOPHAMMER DRILLING EQUIPMENT

Production drilling Diameter mm

Product No.

Product code

inch

T45 (13∕4") No. of buttons

Buttons × button diameter (mm) Gauge

Centre

Gauge buttons angle°

Side

Centre

Weight approx. kg

6×11

35°

1

4

4.9

Flushing hole

BUTTON BIT - Full-ballistic buttons (Soft rock bit) 89

3½

90514993

136-5089-47-45-66,49-20

16

10×11 Insert

X-TYPE BIT

Width (mm)

Height (mm)

76

3

90514366

136-8076,02-17

14.0

26.0

4

1

2.5

89

3½

90002246

136-8089,08-16

14.0

26.0

4

1

3.3

Extension rods T45 (1¾")

Hex. 38 mm (1½")

T45 (1¾")

Light equipment, fully carburized. Rod section 42.6 mm. Length mm

Product code

Product No.

foot

Fully carburized

Surface hardened

Weight approx. kg

3050

10

90002188

236-0731-C,02

25.6

3660

12

90002163

236-0737-C,02

30.8

T45 (1¾") round rod

Surface hardened. Length mm

foot/inch

Product code

Product No.

Fully carburized

Surface hardened

Weight approx. kg

3050

10'

90515296

236-4931-SH,03

34.5

3660

12'

90515294

236-4937-SH,03

41.4

4270

14'

90515295

236-4943-SH,03

48.3

4800

15'9"

90515408

236-4948-SH,03

54.3

6095

20'

90515297

236-4961-SH,03

69.0

T45 (1¾") round Speedrod

Fully carburized. D = 65 mm. Length (L)

Product code

Product No.

Fully carburized

Surface hardened

Weight approx. kg

mm

foot

1525

5

90510730

236-4915-MF-C,02

18.2

1830

6

90510731

236-4918-MF-C,02

21.5

Both surface hardened and fully carburized 3050

10

90515567

3660

12

4270

14

92

236-4931-MF,29

37.6

90515313

236-4937-MF,29

43.5

90515316

236-4943-MF,29

51.5

Production Drilling in Underground Mining

TOPHAMMER DRILLING EQUIPMENT

Production drilling

T45 (13∕4")

Guide rod T45 (1¾") guide Speedrod

Fully carburized. D = 51 mm. Length (L) mm

foot

3660

12

4270

14

Product code

Weight approx. kg

90513771

236-5137-MF-C,02

55.0

90514785

236-5143-MF-C,02

63.5

Product No.

Guide tube

Hole diameter mm

inch

Tube diameter mm

Length (L)

inch

mm

foot

Product No.

Product code

Weight approx. kg 20.0

76

3

64

2½

1220

4

94002687

236-6912,10

76

3

64

2½

1525

5

94000047

236-6915,10

21.6

76

3

64

2½

1830

6

94000046

236-6918,10

25.4

76

3

64

2½

3660

12

94000050

236-6937,10

49.0

89

3½

76

3

1830

6

94502656

236-6618,10

40.0

89

3½

76

3

3660

12

94502627

236-6637,10

77.8

Product No.

Product code

Weight approx. kg

L

Without undercut (shoulder). Hole diameter mm

Tube diameter

Length (L)

inch

mm

inch

mm foot/inch

76

3

64

2½

1000

3'33∕8"

90514047

236-6910-87,10

15.5

76

3

64

2½

1220

4'

90514786

236-6912-87,10

19.0

76

3

64

2½

1830

6'

94502714

236-6918-87,10

27.0

Coupling

Full bridge -57. Diameter

Length

Product No.

Product code

Weight approx. kg

mm

inch

mm

inch

63

215∕32

210

8¼

90002557

336-0063,00

63

215∕32

210

8¼

90505292

336-0063-57,00

2.7

66

25∕8

210

8¼

90002165

336-0066,00

3.2

66

25∕8

210

8¼

90515509

336-0066-57,00

3.2

Production Drilling in Underground Mining

2.7

93

TOPHAMMER DRILLING EQUIPMENT

Production drilling

T51 (2") Round extension rod

Coupling

Shank adapter

Button bit

Round Speedrod

Retrac button bit

Dome reaming bit

Guide tube

Drill bit design

-5089

-5089-20

-5127-47-66

-5089-21

-6089-21-67

-5089-21-45

-6089-21-45-67

-6102-45-67

-5089-21-47

-5102-21-45

-6115-21-45

-5127-21

-6127-21

Dome reaming bit

Please note text on page 42 79 re. finished hole size.

Drill bit Diameter mm

Product No.

Product code

inch

No. of buttons

Buttons × button diameter (mm) Gauge

Centre

Gauge buttons angle°

Weight approx. kg Centre

Flushing hole Side

–

2

3.5

BUTTON BIT - Spherical buttons 89

3½

90510338

137-5089,49-20

12

8×12.7

4×12.7

40°

89

3½

90510377

137-5089-45,49-20

12

8×12.7

4×12.7

40°

–

2

4.8

89

3½

90510357

137-5089-20,49-20

14

8×12.7

6×11

35°

1

1

4.0

89

3½

90510527

137-5089-21,49-20

14

8×12.7

6×12.7

35°

1

2

3.7

89

3½

90513764

137-5089-21-45,49-20

14

8×12.7

6×12.7

35°

1

2

5.3

89

3½

90515252

137-5089-21-47,49-20

14

8×12.7

6×11

35°

–

4

3.6

89

3½

90515251

137-5089-47,49-20

16

10×11

6×11

35°

–

4

3.8

89

3½

90510341

137-6089,49-20

11

6×12.7

3×11, 2×11

35°

1

3

3.6

89

3½

90510391

137-6089-45,49-20

14

8×11

4×11, 2×9

35°

1

4

4.7

89

3½

90513813

137-6089-21,49-20

13

8×12.7

4×11, 1×11

35°

–

4

3.5

89

3½

90510773

137-6089-21-45,49-20

13

8×12.7

4×11, 1×11

35°

–

4

4.9

102

4

90510339

137-5102,49-20

12

8×14.5

4×14.5

40°

–

2

4.8

102

4

90510378

137-5102-45,49-20

12

8×14.5

4×14.5

40°

–

2

7.1

Cont. next page

94

Production Drilling in Underground Mining

TOPHAMMER DRILLING EQUIPMENT

Production drilling Diameter mm

Product No.

Product code

inch

T51 (2")

No. of buttons

Buttons × button diameter (mm) Gauge

Centre

Gauge buttons angle°

Weight approx. kg Centre

Flushing hole Side

BUTTON BIT - Spherical buttons 102

4

90510807

137-5102-21,49-20

14

8×15.8

6×12.7

35°

1

2

5.1

102 102

4

90510855

137-5102-21-45,49-20

14

8×15.8

6×12.7

35°

1

2

6.9

4

90515365

137-5102-47,49-20

14

8×14.5

6×12.7

35°

1

4

5.1

102

4

90510343

137-6102,49-20

11

6×14.5

3×12.7, 2×12.7

35°

1

3

5.1

102

4

90510415

137-6102-45,49-20

14

8×12.7

4×12.7, 2×12.7

35°

1

4

7.2

102

4

90510824

137-6102-21,49-20

13

8×14.5

4×12.7, 1×12.7

35°

–

4

5.3

102

4

90510825

137-6102-21-45,49-20

13

8×14.5

4×12.7, 1×12.7

35°

–

4

7.2

115

4½

90510340

137-5115-20,49-20

17

9×14.5

8×12.7

35°

2

1

6.7

115

4½

90510791

137-5115-20-45,49-20

17

9×14.5

8×12.7

35°

2

1

7.0

115

4½

90510818

137-5115-21,49-20

14

8×15.8

6×14.5

35°

1

2

6.1

115

4½

90515250

137-5115-47,49-20

14

8×14.8

6×14.5

35°

1

4

5.8

115

4½

90510344

137-6115,49-20

14

8×14.5

4×12.7, 2×12.7

35°

1

4

5.8

115

4½

90510655

137-6115-45,49-20

14

8×14.5

4×12.7, 2×12.7

35°

1

4

9.5

115

4½

90510874

137-6115-21,49-20

14

8×15.8

4×14.5, 2×14.5

35°

–

4

6.0

115

4½

90510826

137-6115-21-45,49-20

16

9×14.5

6×14.5, 1×14.5

35°

–

3

9.7

127

5

90510360

137-5127,49-20

22

12×12.7

10×12.7

35°

–

2

6.8

127

5

90510361

137-5127-20,49-20

20

10×14.5

10×12.7

35°

–

2

6.8

127

5

90510790

137-5127-20-45,49-20

20

10×14.5

10×12.7

35°

–

2

11.9

127

5

90513747

137-5127-21,49-20

16

8×15.8

8×14.5

35°

1

2

6.8

127

5

90515249

137-5127-47,49-20

14

8×15.8

6×15.8

35°

–

4

8.0

127

5

90510406

137-6127,49-20

16

8×14.5

4×14.5, 4×11

35°

1

4

6.8

127

5

90510656

137-6127-45,49-20

16

8×14.5

4×14.5, 4×11

35°

1

4

11.2

127

5

90513815

137-6127-21,49-20

14

8×15.8

4×15.8, 2×12.7

35°

–

4

7.7

127

5

90513757

137-6127-21-45,49-20

14

8×15.8

4×15.8, 2×12.7

35°

–

4

11.0

140

5½

90515254

137-5140-47,49-20

14

8×15.8

6×15.8

35°

–

4

9.4

152

6

90514185

137-5152-42-24,39-20*

20

18×14.5

2×14.5

35°

1

3

10.0

14

8×12.7

6×12.7

35°

1

2

3.7

BUTTON BIT - Ballistic buttons 89

3½

90514003

137-5089-21-67,49-20

89

3½

90514002

137-5089-21-45-67,49-20

14

8×12.7

6×12.7

35°

1

2

5.3

89

3½

90514329

137-5089-45-67,49-20

12

8×12.7

4×12.7

40°

–

2

5.0

89

3½

90513814

137-6089-21-67,49-20

13

8×12.7

4×11, 1×11

35°

–

4

3.6

89

3½

90510696

137-6089-21-45-67,49-20

13

8×12.7

4×11, 1×11

35°

–

4

4.9

89

3½

90510380

137-6089-45-67,49-20

14

8×11

4×11, 2×9

35°

1

4

4.7

102

4

90514476

137-5102-45-67,49-20

12

8×14.5

4×14.5

40°

–

2

7.0

102

4

90510841

137-5102-21-45-67,49-20

14

8×15.8

6×12.7

35°

1

2

7.0

102

4

90510346

137-6102-67,49-20

11

6×14.5

3×12.7, 2×12.7

35°

1

3

5.2

102

4

90510379

137-6102-45-67,49-20

14

8×12.7

4×12.7, 2×12.7

35°

1

4

7.2

102

4

90513756

137-6102-21-67,49-20

13

8×14.5

4×12.7, 1×12.7

35°

–

4

5.2

102

4

90515368

137-6102-21-45-67,49-20

13

8x14.5

4x12.7, 1x12.7

35°

–

4

7.2

115

4½

90510819

137-5115-21-67,49-20

14

8×15.8

6×12.7

35°

1

2

6.1

115

4½

90510407

137-6115-67,49-20

14

8×14.5

4×12.7, 2×12.7

35°

1

4

5.8

BUTTON BIT - Full-ballistic buttons (Soft rock bit) 102

4

90514538

137-5102-47-66,49-20

14

8×14.5

6×12.7

35°

1

4

5.0

127

5

90514361

137-5127-47-66,49-20

14

8×15.8

6×15.8

35°

–

4

8.0

* For reaming, reversed flushing.

Production Drilling in Underground Mining

95

TOPHAMMER DRILLING EQUIPMENT

Production drilling

T51 (2")

Extension rod T51 (2") round rod

Surface hardened. Length mm

foot

Product code

Product No.

Fully carburized

Surface hardened

Weight approx. kg

3660

12

90515299

237-5137-SH,03

51.1

4270

14

90515300

237-5143-SH,03

59.5

6095

20

90515301

237-5161-SH,03

85.1

T51 (2") round Speedrod

Fully carburized. D = 72 mm. L

Length (L)

Product code

Product No.

Fully carburized

Surface hardened

Weight approx. kg

mm

foot

1525

5

90510737

237-5115-MF-C,02

25.0

1830

6

90510738

237-5118-MF-C,02

26.8

Both surface hardened and fully carburized 3660

12

90515311

237-5137-MF,29

55.4

4270

14

90515314

237-5143-MF,29

64.0

6095

20

90515557

237-5161-MF,29

89.5

Guide tube

L

Hole diameter Tube diameter

Length (L) mm

Weight approx. kg

Product No.

Product code

6

94502624

237-6618,10

40.0

12

94502641

237-6637,10

79.1

94502707

237-6837,10

80.0

mm

inch

mm

inch

foot

89

3½

76

3

1830

89

3½

76

3

3660

102

4

87

37∕16

3660

12

Coupling Full bridge -57. Diameter

Length

Product No.

Product code

Weight approx. kg

mm

inch

mm

inch

72

227∕32

235

9¼

90002898

337-0072,00

4.0

72

227∕32

255

10

90002962

337-0072-57,00

4.0

77

3 ∕32

235

9¼

90510523

337-0077,00

4.3

96

1

Production Drilling in Underground Mining

TOPHAMMER DRILLING EQUIPMENT

Production drilling

Tube drilling system Button bit

Drill tube

Drill tube Retrac guide bit-36

Shank adapter

Speedrod

Guide tube female/male Retrac guide bit-35

Speedrod

Guide tube female/female

Rod adapter Dome reaming bit

Drill bit design

-6089-21-36-67

-6089-35-67

-6102-36

-6115-21-35-67

-5152-21

151-5152-42-24

Please note text on page 79 42 re. finished hole size.

Drill bit System Thread

Diameter mm

inch

Product No.

Product code T60 thread

TDS 45

R32

See page 49

TDS 56

T38

See page 53

TDS 64

T45

See page 58

TDS 76

T51

See page 62

TDS 87

T51

See page 62

Gauge No. of Buttons × button diameter (mm) buttons buttons Gauge Centre angle°

Weight approx. Centre kg

Flushing hole Side

BUTTON BIT - Spherical buttons TDS 76 ST58

TDS 87 ST68

89

3½

90510522

151-5089-21,49-20

14

8×12.7

6×12.7

35°

1

2

4.0

102

4

90510789

151-5102-21,49-20

14

8×15.8

6×12.7

35°

1

2

5.3

152

6

90513754

151-5152-42-24,49-20*

21

18×14.5

3×14.5

35°

3

3

10.4

102

4

90510494

152-5102-21,49-20

14

8×15.8

6×12.7

35°

1

2

5.5

127

5

90514264

152-5127-21,49-20

17

8×15.8

9×14.5

35°

1

2

6.9

152

6

90510528

152-5152-21,49-20

18

8×15.8

10×14.5

35°

1

2

11.8

152

6

90513755

152-5152-42-24,49-20*

21

18×14.5

3×14.5

35°

3

3

11.8

BUTTON BIT - Ballistic buttons TDS 76 ST58 TDS 87 ST68

89

3½

90510831

151-6089-21-36-67,49-20

13

8×12.7

4×11, 1×11

35°

–

4

4.3

89

3½

90513887

151-6089-35-67,49-20

17

10×11

6×11, 1×11

35°

–

4

4.1

102

4

90510777

152-5102-21-67,49-20

14

8×15.8

6×12.7

35°

1

2

5.5

105

1

4 ∕8

90514291

152-6105-35-67,49-20

18

10×12.7

6×12.7, 2×12.7

35°

–

4

5.4

115

4½

90510701

152-5115-21-67,49-20

14

8×16

6×14.5

35°

1

2

5.8

115

4½

90514389

152-6115-21-35-67,49-20

17

9×14.5

6×14.5, 2×14.5

35°

–

3

7.2

* For reaming, reversed flushing.

Production Drilling in Underground Mining

97

TOPHAMMER DRILLING EQUIPMENT

Production drilling Guide tube

Tube drilling system Drill tube ST58, ST68 thread

R32–T51 thread

Rope/T thread, male/female

T thread, female/female, -36, -37

TDS 76 with T45 and T51 thread: Without wrench flat. TDS 76 with ST58 thread: Wrench flat in female end only. TDS 87 with ST68 thread: Wrench flat in female end only. L

System Thread TDS 45

TDS 56

R32

T38

foot

Product No.

Product code

Outer Flushing hole diameter diameter, mm mm

Weight approx. kg

1220

4

94502681

203-7112,10

45

10

10.0

1525

5

94502658

203-7115,10

45

10

12.5

1830

6

94502659

203-7118,10

45

10

14.2

3050

10

94502660

203-7131,10

45

10

23.4

1220

4

94502648

235-7012,10

56

16

12.6 14.0

1525

5

94000051

235-7015,10

56

16

1830

6

94000052

235-7018,10

56

16

17.4

3050

10

94000053

235-7031,10

56

16

28.3 32.8

3660

12

94000054

235-7037,10

56

16

TDS 64

T38

3660

12

94502622

235-6937,10

64

18

51.0

TDS 64

T45

1220

4

94502687

236-6912,10

64

18

20.0

TDS 76 TDS 76

T45 T51

TDS 76 ST58

TDS 87 ST68

* **

98

Length (L) mm

1525

5

94000047

236-6915,10

64

18

21.6

1830

6

94000046

236-6918,10

64

18

25.4

1830

6

90510814

236-6918-36,10**

64

18

27.6 26.0

1830

6

94502714

236-6918-87,10

64

18

3050

10

94000057

236-6931-86,10

64

20

41.7

3660

12

94000050

236-6937,10

64

18

49.0 40.0

1830

6

94502656

236-6618,10

76

18

3660

12

94502627

236-6637,10

76

18

77.8

1830

6

94502624

237-6618,10

76

22

40.0

3660

12

90513888

237-6637-37,10**

76

22

81.2

1525

5

94502572

251-6615,10

76

24

34.0

1830

6

94000015

251-6618,10

76

24

40.0 40.0

1830

6

94502715

251-6618-88,10*

76

24

3660

12

94502573

251-6637,10

76

24

76.3

1220

4

90514263

252-6812,10

87

38

29.6

1525

5

94502712

252-6815,10

87

38

35.5

1830

6

94502713

252-6818,10

87

38

41.6

1830

6

94502710

252-6818-88,10*

87

38

43.8

3660

12

94502709

252-6837,10

87

38

81.0

C-Drive. Female/female.

Production Drilling in Underground Mining

TOPHAMMER DRILLING EQUIPMENT

Production drilling

Tube drilling system

Rod adapter

Fully carburized. To be used together with female/female guide tube. Length

Thread

Product No.

Product code

Weight approx. kg

85∕8

T45

90510815

236-4902-C,00

1.9

9 ∕8

T51

90514708

237-5102-C,10

2.7

mm

inch

220 250

7

Production Drilling in Underground Mining

99

DRILL RIG SPECIFICATION

Simba 360  - series 20º

1845

3180

2260

700

65º

2304

1555 1500 7968−8362 (with BMH 234)

2310 Simba 364 All dimensions in mm

Production drilling rig with pneumatic in the hole hammer, ITH and Electric Direct System, EDS. Provides a basic, efficient and productive long hole drilling solution. Ring drilling with parallel holes upwards/downwards and in the side walls. Three different positioning unit configurations to match the user’s need. Hole range 95-178 mm depending on rock drill type.

• Mine adapted carrier with high ground clearance, articulated steering and four wheel drive for easy manoeuvring in narrow drifts and steep ramps • FOPS-approved telescopic protection roof • Cable reel and collector

Features

• Angle reading instrument • Hole depth measurement • Automatic or central lubrication system for the positioning and drilling unit • Rig alignment laser • Fire suppression system, Ansul or Forrex • Rig washing kit • Water hose reel

100

Working range Simba 360-series 750

1500

750

945

1 x 34, 44, 54, 64 1 x DHR 48 1 x BMH 234, 235, 236 1 x BHR 60-2 1 x BHT 150 (Simba 263 and 264) 1 x BSJ8-200 1 x BSJ8-115 1 x BSH 65 BHP 150 (Simba 362 and 364) 1 x 45 KW EDS 7,968-8,362 mm 1,950/2,380 mm 3,180 mm 2,960 mm 5,440/2,890-2,700 mm app. 15,500 kg

1150

Rock drill Rotation unit Feed Rotary actuator Slide table Stinger backward on feed Stinger forward on feed Breakout table Pendulum arm Power pack Drilling system Length tramming (BMH 234) Width Height tramming Height roof up Turning radius Gross weight (basic rig+RHS)

45º

45º

255

Main specifications Simba 360-series

Visit www.atlascopco.com/cmt for more information

1950 2380 2000

• Electric Direct System, EDS. High drilling capacity with basic functions such as semi-automatic drilling and anti-jamming included. Manually adjusted feed force from the operator’s panel. Digital movements on the drilling unit controlled by switches on a separate positioning panel. Trolley mounted control panel for flexible operator environment • Rod Handling System, RHS 27 • Pneumatic rock drill COP 34, 44, 54 or 64 • Simba 362, ring drilling with parallel holes up/down and in the side walls up to 1.5 m apart • Simba 363, ring drilling with parallel holes up/down up to 1.5 m apart • Simba 364, ring drilling with parallel holes up/down up to 3 m apart and in the side walls up to 1.5 m apart • Stingers mounted directly on the feed beam gives a sturdy set up with less possible hole deviation

Main optional equipment

2430

Simba 364

Production Drilling in Underground Mining

DRILL RIG SPECIFICATION

2360 - 3060

Simba M3 C-ITH

Rock drill Rotation unit Feed Rotary actuator Slide table Stinger backward on feed Stinger forward on feed Power pack Drilling system Length tramming Width Height tramming/roof up Turning radius Gross weight (basic rig+RHS)

1 x COP 34, 44, 54, 64 1 x DHR48 1 x BMH 234, 235, 236 1 x BHR 60-2 1 x BHT 150 1 x BSJ8-200 1 x BSJ8-150 1 x 55 kW RCS 10,500 mm 2,350 mm 2,875/2,965 mm 6,300/3,800 mm app. 17,000 kg

Production Drilling in Underground Mining

Main optional equipment • FOPS-approved cabin • ABC Regular, one hole automatics • ABC Total, full fan automatics, including Full Drill Data Handling and Breakthrough Automatic Stop • On board air booster compressor • Floating sub on rotation unit • Full Drill Data Handling, including DPH and MWD • Drill Plan Handling, DPH • Void Detection, VD • Breakthrough Automatic Stop, BAS • Rig Remote Access, RRA • Rod Handling System, RHS 35 • Automatic or central lubrication system for the positioning and drilling unit • Rig alignment laser • Fire suppression system, Ansul or Forrex - manual, check fire or automatic • Water hose reel • Turntable +/- 20°

Visit www.atlascopco.com/cmt for more information Working range Simba M3 C-ITH A 1500 (PH)

RD = Ring drilling PH = Parallel holes

Dimensions in mm

Stinger extension

o

R

30 29

70

(R

D)

30 o

1200 (900) Feed extension

• RCS with interactive operators control panel. Ergonomic design. Proportional movements in the levers for smooth and precise positioning. Integrated statistics, diagnostics and log data. Up to five different preset settings of drilling parameters. PCMCIA-card interface for transfer of drill plans, log files and storage of parameter files for optimal drill settings. Trolley mounted control panel for flexible operators environment • Rod Handling System, RHS 27 • Pneumatic ITH rock drill, COP 34, 44, 54 or 64 with pressure up to 25 bar for high productivity and excellent hole straightness • Stingers mounted directly on the feed beam gives a sturdy set up with less possible hole deviation and less stress on the drilling unit • Mine adapted carrier with high ground clearance, articulated steering and four wheel drive for easy manoeuvring in narrow drifts and steep ramps • Turbo charged water cooled diesel engine with catalyzer

• ABC Basic with semi automatic drilling and angle reading instrument • A sophisticated lubrication system for the pneumatic hammer ensures a long life and trouble free use • Water mist flushing system with external air supply • FOPS-approved telescopic protection roof • Cable reel and collector • Smart oil leakage shut-down and distributed hydraulics at the drilling unit

380o 1825

Features

All dimensions in mm

1150 900

Production drilling rig with pneumatic in the hole hammer, ITH. Rig Control System, RCS, provides efficient, productive and high precision long hole drilling. Ring drilling with parallel holes upwards/downwards up to 1.5 m apart. Hole diameter 95  –178 mm depending on rock drill type. Hole depth, up to 66 m with optional RHS 35.

Main specifications Simba M3 C-ITH

2500 3000

3740

4915

2900

150 7440

M3

Stinger extension 2000

A-A A

101

DRILL RIG SPECIFICATION

2360 - 3060

Simba M4 C-ITH

102

1 x COP 34, 44, 54, 64 1 x DHR48 1 x BMH 234, 235, 236 1 x BHR 60-2 1 x BHT 150 1 x BHP 150 1 x BSJ8-200 1 x BSJ8-150 1 x 55 kW RCS 10,500 mm 2,350 mm 2,875/2,965 mm 6,300/3,800 mm app. 20,000 kg

• FOPS-approved cabin • ABC Regular, one hole automatics • ABC Total, full fan automatics, including Full Drill Data Handling and Breakthrough Automatic Stop • On board air booster compressor • Floating sub on rotation unit • Full Drill Data Handling, including DPH and MWD • Drill Plan Handling, DPH • Void Detection, VD • Breakthrough Automatic Stop, BAS • Rig Remote Access, RRA • Rod Handling System, RHS 35 • Automatic or central lubrication system for the positioning and drilling unit • Rig alignment laser • Fire suppression system, Ansul or Forrex - manual, check fire or automatic • Water hose reel

Visit www.atlascopco.com/cmt for more information Working range Simba M4 C-ITH A 3000 (PH)

RD = Ring drilling PH = Parallel holes

Dimensionsin mm

Stinger extension

750

R

70

R 27

1500

o

30

750

29

(R D) H)

90 (P

30 o

(PH) 1500

Rock drill Rotation unit Feed Rotary actuator Slide table Pendulum arm Stinger backward on feed Stinger forward on feed Power pack Drilling system Length tramming Width Height tramming/roof up Turning radius Gross weight (basic rig+RHS)

Main optional equipment

1200 (900) Feed extension

• Rig Control System, RCS with interactive operators control panel. Ergonomic design. Proportional movements in the levers for smooth and precise positioning. Integrated statistics, diagnostics and log data. Up to five different pre-set settings of drilling parameters. PCMCIA-card interface for transfer of drill plans, log files and storage of parameter files for optimal drill settings • Trolley mounted control panel for flexible operators environment • Rod Handling System, RHS 27 • Pneumatic ITH rock drill, COP 34, 44, 54 or 64 with pressure up to 25 bar for high productivity and excellent hole straightness • Stingers mounted directly on the feed beam give a sturdy set up with less possible hole deviation and less stress on the drilling unit • Mine adapted carrier with high ground clearance, articulated steering and four wheel drive for easy manoeuvring in narrow drifts and steep ramps • Turbo charged water cooled diesel engine with catalyzer

• ABC Basic with semi automatic drilling and angle reading instrument • A unique weight compensating system gives optimal feed force in all directions • A sophisticated lubrication system for the pneumatic hammer ensures a long life and trouble free use • Water mist flushing system with external air supply • FOPS-approved telescopic protection roof • Cable reel and collector • Smart oil leakage shut-down and distributed hydraulics at the drilling unit

380o

1825

Features

All dimensions in mm

1150 900

Production drilling rig with pneumatic in the hole hammer, ITH. Rig Control System, RCS, provides efficient, productive and high precision long hole drilling. Ring drilling with parallel holes up to 1.5 m apart in the side walls and up to 3 m apart upwards/downwards. Hole diameter 95   –178 mm depending on rock drill type. Hole depth up to 66 m with optional RHS 35.

Main specifications Simba M4 C-ITH

2700 3200

3740

4915 4600

2900

150 7440

Stinger extension 2000

A-A

M4

A

Production Drilling in Underground Mining

DRILL RIG SPECIFICATION

3040

Simba M6 C-ITH

3740

• Rig Control System, RCS with interactive operators control panel. Ergonomic design. Proportional movements in the levers for smooth and precise positioning. Integrated statistics, diagnostics and log data. Up to five different pre-set settings of drilling parameters. PCMCIA-card interface for transfer of drill plans, log files and storage of parameter files for optimal drill settings • Rod Handling System, RHS 27 • Pneumatic ITH rock drill, COP 34, 44, 54 or 64 with pressure up to 25 bar for high productivity and excellent hole straightness • Stingers mounted directly on the feed beam it gives a sturdy set up with less possible hole deviation and less stress on the drilling unit • Mine adapted carrier with high ground clearance, articulated steering and four wheel drive for easy manoeuvring in narrow drifts and steep ramps • Turbo charged water cooled diesel engine with catalyzer • ABC Basic with semi automatic drilling and angle reading instrument • A unique weight compensating system gives optimal feed force in all directions Main specifications Simba M6 C-ITH

• FOPS-approved cabin • ABC Regular, one hole automatics • ABC Total, full fan automatics, including Full Drill Data Handling and Breakthrough Automatic Stop • On board air booster compressor • Floating sub on rotation unit • Full Drill Data Handling, including DPH and MWD • Drill Plan Handling, DPH • Void Detection, VD • Breakthrough Automatic Stop, BAS • Rig Remote Access, RRA • Rod Handling System, RHS 35 • Automatic or central lubrication system for the positioning and drilling unit • Rig alignment laser • Fire suppression system, Ansul or Forrex - manual, check fire or automatic • Water hose reel • Trolley mounted control panel

Working range Simba M6 C-ITH A 3000 (PH)

RD = Ring drilling PH = Parallel holes

Dimensions in mm

Stinger extension

Feed extension 1200 (900) 45 o

o

30

)

RD

Production Drilling in Underground Mining

Main optional equipment

( 80 48

1 x COP 34, 44, 54, 64 DHR48 1 x BMH 234, 235, 236 1 x BHR 60-2 ±1,5 m 1 x BSJ8-200 1 x BSJ8-150 1 x 55 kW RCS 10,500 mm 2,210 mm 3,200 mm 6,750/3,800 mm app. 22,000 kg

• A sophisticated lubrication system for the pneumatic hammer ensures a long life and trouble free use • Water mist flushing system with external air supply • FOPS-approved telescopic protection roof • Cable reel and collector • Environment-friendly system to minimize hydraulic oil pollution. • Smart oil leakage shut-down and distributed hydraulics at the drilling unit • I-frame attached positioning and drilling unit. High visibility and safety for operator when working under FOPS approved roof

R

Rock drill Rotation unit Feed Rotary actuator I-frame with pendulum arm Stinger backward on feed Stinger forward on feed Power pack Drilling system Length tramming Width Height tramming Turning radius Gross weight (basic rig+RHS)

3770

R 2760

(RD)

o

45

45 o

380o

2780

Features

Illustration shows rig with optional equipment mounted All dimensions in mm

1150 900

Production drilling rig with pneumatic in the hole hammer, ITH. Rig Control System, RCS, provides efficient, productive and high precision long hole drilling. Ring drilling with parallel holes upwards/downwards up to 3 m apart. Hole diameter 95  –178 mm depending on rock drill type. Hole depth up to 66 m with optional RHS 35.

5650 5000

2900

2050

150 8520

Stinger extension 2000

A-A

M6

A

103

ITH ROTATION UNITS

Rotation units for ITH drilling

DHR 48H68-3

Technical data

DHR series Hole diameter range 70-165 mm, drilling torque up to 5,100 Nm The Atlas Copco DHR series of rotation units for underground ITH drilling consists of a full programme of hydraulically-powered versions designed for longer life, superior wear resistance, and enhanced output. They are equipped with either fixed or moving adapters for all common types and dimensions of thread. All are equipped with reliable, longlife motors of a type for which planetary gear is unnecessary. Normal working torque is obtained even at a very modest hydraulic

Operative data, hydraulically powered rotation units Type Length1, mm Weights1, kg Drill tube connection API Reg Female Drive motors qty Drive motor type Drilling performance2 Torque, max (Nm) Press drop, max (bar) Speed, max (rpm)3 Flow, max (l/min)

DHR 48H56

DHR 48H68

534/888 164/240

550/904 166/242

23/8”/ 3½” 2 OMSS160

23/8”/ 3½” 2 OMSS250

3,900 210 107 150

5,100 175 68 150

pressure. The potential working pressure, however, is much greater, offering a good margin for more demanding work situations. Engine speed and rotation direction are easy to set on all motors, and the superior design gives both quiet operation and minimal maintenance. There are two well-proven sizes of reduction gear with various gear combinations to suit all DHR series motor versions. They are extremely strong, and designed for simple and easy mounting.

Adapter type/thread Rotation Units DHR 48H56-1 DHR 48H56-2 DHR 48H56-3 DHR 48H56-6 DHR 48H68-1 DHR 48H68-2 DHR 48H68-3 DHR 48H68-6

Adapter type/thread Floating API 23/8” Reg Box Fixed API 23/8” Reg Box Floating API 31/2” Reg Box Fixed API 31/2” Reg Box Floating API 23/8” Reg Box Fixed API 23/8” Reg Box Floating API 31/2” Reg Box Fixed API 31/2” Reg Box

Recommended for ITH Hammer 4”- 5” 4”- 5” 5”- 6” 5”- 6” 4”- 5” 4”- 5” 6”- 8” 6”- 8”

With fixed adapter/floating adapter With mineral oil. For other oils ask for information 3 Not in combination with max torque 1 2

104

Production Drilling in Underground Mining

ITH DRILLING EQUIPMENT

Air consumption/Working pressure (cfm) 2000

(l/s) 900

Air consumption

800 1500

Hammer types

700

Type

600 1000

COP COP COP COP COP

500 400 300

500

Std

QM

Slim*

    

  

 

34 44 54 54 GE 64 G

200

* Reduced hammer OD

100 0

0 10

15 200

150

20 250

25

300

30

350

(bar)

450 (psi)

400

Working pressure COP 34

COP 44

COP 54

COP 54 GOLD EXPRESS

COP 64 GOLD

Technical data Hammer

COP 34

COP 54 Gold Express

COP 64 Gold

Length excl. thread

954 mm

37.55 in

COP 44 958 mm

37.72 in

1069 mm

COP 54 42.08 in

1119 mm

44.1 in

1163 mm

45.78 in

External diameter

83.5 mm

3.28 in

98 mm

3.86 in

120 mm

4.72 in

120 mm

4.72 in

142 mm

5.59 in

External diameter QM



126 mm

4.96 in

126 mm

4.96 in

146 mm

5.75 in

Hammer weight

27 kg

57 kg

126 lbs

66 kg

145 lbs

96 kg

212 lbs

Hammer weight QM



67 kg

148 lbs

76 kg

167 lbs

109 kg

241 lbs

Piston diameter

68 mm

2.67 in

78 mm

3.07 in

100 mm

3.93 in

100 mm

3.93 in

120 mm

4.72 in

Piston weight

4.8 kg

10.7 lbs

7.1 kg

16 lbs

12.5 kg

28 lbs

15 kg

33 lbs

20.5 kg

45 lbs

Recommended bit size

92-105 mm

35/8-41/8 in

110-125 mm

45/16-5 in

134-152 mm 51/4-6 in

Rec. bit size QM





Rec. bit size Slim





Bit shank

COP 34

Top sub thread

23/8" API Reg

Optional thread connection





Wrench flat 23/8" API Reg

65 mm

65 mm

2.6 in

27/8" API Reg





95 mm

3.7 in

31/2" API Reg







31/2" API Reg (QM)





102 mm

4.0 in

Feed force Feed force, normal

3-12 kN 6 kN

700-2500 lbs 1300 lbs

5-15 kN  10 kN

1100-3300 lbs 2200 lbs

6-17 kN  12 kN

1300-3700 lbs 6-19 kN  2600 lbs 14 kN

1300-4100 lbs 7-20 kN 2600 lbs 14 kN

Working pressure

6-25  bar

87-360 psi

6-25 bar

87-360 psi

6-25  bar

87-360 psi

87-360 psi

Rotation speed

30-90 r/min

60 lbs

38 kg

84 lbs



2.6 in

134-152 mm 5.3-6 in

156-178 mm 61/8-7 in

140-152 mm 51/4-6 in

140-152 mm 5.5-6 in

165-178



130-152 mm 5.1-6.0 in

152-178 mm 6-7 in

IR DHD340

IR DHD350

IR QL 50

IR QL 60

23/8" API Reg

23/8" API Reg

31/2" API Reg

31/2" API Reg

31/2" API Reg

27/8" API Reg

31/2" API IF

65 mm

25-80 r/min

2.6 in

20-70 r/min

65 mm

2.6 in

95 mm

3.7 in

102 mm

102 mm

4.0 in

102 mm

6-25  bar 20-70 r/min

61/2-7 in

4.0 in 4.0 in 1600-4400 lbs 3100 lbs

12-30 bar 174-430 psi 25-60 r/min

Standard design – Ideal for water well drilling, blast hole drilling and civil engineering projects. QM design – Designed for abrasive and demanding applications. The QM hammer features a larger overall diameter, in turn allowing for thicker walls and, ultimately, a longer service life. It’s also equipped with reversing back-out buttons, protecting the top sub from wear. Slim design – The Slim version is designed for non to medium-abrasive formations, using a smaller bit diameter than recommended for the standard hammer OD. The Slim design allows an oversized hammer to drill the hole, thereby optimizing performance.

Production Drilling in Underground Mining

105

ITH DRILLING EQUIPMENT

ITH Drilling equipment

Bit designs

Flat front HD

Convex/Ballistic front design

SpeedBit

Concave front design

Rocket bit

Hammers

* * * *

COP 34 COP 44 COP 54 COP 64 Gold

* * * *

* * * * * *

* *

Bit dimensions Diam. mm

90

92

95

100

105

110

115

125

130

134

140

146

149

152

156

165

178

Diam. inch

39/16

35/8

33/4

4

41/7

41/3

41/2

5

51/8

52/7

51/2

53/4

56/7

6

61/7

61/2

7

*

*

*

*

* *

*

*

*

*

*

*

* *

*

*

Hammers

COP 34 COP 44 COP 54/ COP 54 GE COP 64 Gold

*Standard dimension

*

* *

*

* *Restricted use only

ITH Drillsting specification Simba Rotation unit

1 DhR 48h56-3 DhR 48h56-6 API 3 ½" Reg Box

106

Adapter

API 3 ½" Reg Pin x 2 3⁄8" Reg Box L =120 mm 310-2114-14-012-01,D00-41

Drill pipe

Crossover

iTh hammer

Bit

COP 44 Std, API 2 3⁄8" Reg Pin 9704-03-00 COP 54 Std, API 3 ½" Reg Pin 9705-03-04

110-130 mm

Not needed

134-152 mm

2 3⁄8" Reg Pin x 3 ½" Reg Box L = 220 mm 314-2114-10-022-01-D00,41

COP 54 GE Std, API 3 ½" Reg Pin 9705-05-34 COP 54 GE QM, API 3 ½" Reg Pin 9705-05-36 COP 64 Gold Std, API 3 ½" Reg Pin 9706-05-34 COP 64 Gold QM, API 3 ½" Reg Pin 9706-05-36

OD = 89 mm Wall = 6.3 mm L = 1500 mm 210-089-0150-B41-L0,40-05 or L = 1800 mm 210-089-0180-B41-L0,40-06 API 2 3⁄8" Reg

134-152 mm

140-152 mm 156-203 mm 165-203 mm

Production Drilling in Underground Mining

HYDRAULIC FEEDS

Rod Handling System RHS 17, 27 and 35

RHS 27

Rod handling system for mechanized handling of extension rods and drill tubes on Simba underground production drill rigs.

51 m is possible with rod length 4, 5 or 6 ft respectively. RHS 27 is available in versions for Speedrod® R32, T38, T45 and T51, or for drilltube diameter 64, 76, 87 and 89 mm.

Features

RHS 35 has a storage capacity in the carousel of 35 rods. Together with the rod in the feed, hole depth up to 55 or 66 m is possible with rod length 5 or 6 ft respectively. RHS 35 is available in versions for drill tube diameter 89 mm. Available for ITH Simba drill rigs only.

The mechanized rod handling system relieves the operator from heavy lifting work and is therefore an essential feature for maintaining high productivity. The RHS system for mounting on Atlas Copco Simba production drill rigs is available in three types – RHS 17, RHS 27 and RHS 35 and can be used when drilling in all directions. RHS 17 has a storage capacity in the carousel of 17 rods. Together with the rod in the feed, hole depth up to 22, 27.5 or 33 m is possible with rod length 4, 5 or 6 ft respectively. RHS 17 is available in versions for Speedrod® R32, T38, T45 and T51, or for drilltube diameter 64 mm.

On Simba RCS controlled rigs the system controls drilling and rod handling. It enables the operator to start a drill hole and then leave the machine to complete the hole to a preprogrammed depth, after which it restores the drill rods into the carousel. In the meantime, the operator can attend to other tasks. The RHS 17, 27 and RHS 35 are deliverad for left-hand side assembly.

RHS 27 has a storage capacity in the carousel of 27 rods. Together with the rod in the feed, hole depth up to 34, 43 or

Technical data RHS 17 Rod diameters, mm

32, 38, 45, 51

Tube diameters, mm

64

Feed type

BMH 214 BMH 224

BMH 215 BMH 225

BMH 216 BMH 226

Rod/tube length, mm (ft)

1 220 (4)

1 525 (5)

1 830 (6)

No. of rods/tubes

17 + 1

RHS 27

RHS 35

32, 38, 45, 51

N/A

64, 76, 87, 89

89

BMH 244

BMH 245 BMH 235

BMH 246 BMH 356

1 220 (4)

1 525 (5)

1 830 (6)

27 + 1

–

BMH 235 BMH 236

–

1 500 (5)

1 875 (6)

35 + 1

Max. hole depth, m (ft)

22 (72)

27.5 (90)

33 (108)

34 (112)

43 (141)

51 (167)

–

54 (177)

66 (216)

Total weight, excl rods, kg

548

569

580

568

584

600

–

734

750

Production Drilling in Underground Mining

107

HYDRAULIC FEEDS

Hydraulic Feeds BMH 200-series

BMH 215

BMH 235

BMH 200-series

The feeds are specially designed for high precision longhole drilling and are available for either tophammer drilling or ITH drilling. The double-bottom feed beam, made of extruded aluminium, withstands high torsional and bending stresses. The double-action hydraulic cylinder, with its direct coupling to the cradle, gives smoother and steady movement of the rock drill. Thanks to replaceable wear pads and easily adjustable cradle, centring of the rock drill can be maintained without difficulty. All surfaces exposed to wear are protected by stainless-steel guide sleeves

Tophammer drilling BMH 210, 220 and 240

• BMH 210-series are intended for COP 1838 rock drills. • BMH 220-series are intended for COP 2550UX rock drills. • BMH 240-series are intended for COP 4050MUX.

ITH drilling BMH 230

• BMH 230-series is intended for COP 34, 44, 54 or 64 ITH hammers

Drill steel support BSH 55 (tophammer drilling)

The feeds are equipped with BSH 55 hydraulic drill steel support, which works with one pair of clamping cylinders. The support centralizes and guides the drill string during collaring and guides it during drilling. It grips the drill rod when breaking the joints and holds the drill string safely in place during rod handling. The clamping cylinders have piston rod-end pieces which are available for different types of drill tubes/rods.

Rod breaker BSH 65 (ITH drilling)

The feeds are equipped with BSH 65 hydraulic rod breaker, which works with two pairs of clamping cylinders and a breaking cylinder. The rod breaker serves a dual purpose: It guides the drill string during collaring. It also guides the drill string during drilling. It breaks the threaded joint between the rotation unit and the drill tube during drilling, 108

and breaks the threaded joints between the tubes in the drill string when they are withdrawn from the hole. The clamping cylinders have piston rod-end pieces which are available for different types of drill tubes/rods. A special rod breaker version is available for slot drilling. Specifications

kg

Weight excl. rock drill kg

3160

510

698

3465

535

716

560

734

Total length mm

Rod

length

mm

ft

214

1220

4

215

1525

5

216

1830

6

3770

Type

Weight

COP 1838

214X*

1220

4

3365

510

748

215X*

1525

5

3670

535

766

216X*

1830

6

3975

560

784

COP 2550UX 224X*

1220

4

3365

510

748

225X*

1525

5

3670

535

766

226X*

1830

6

3975

560

784

244

1220

4

3390

510

698

245

1525

5

3695

535

716

246

1830

6

4000

560

734

COP 4050

244X*

1220

4

3590

510

748

245X*

1525

5

3895

535

766

246X*

1830

6

4200

560

789

* additional X = extractor device for rock drill (backhammering unit) COP 34, 44, 54, 64 235

1875

6.1

3200

535

930

236

1875

6.1

3510

560

948

235X*

1500

6.1

3500

535

930

236X*

1875

6.1

3810

560

948

* additional X = floating sub on rotation unit

Production Drilling in Underground Mining

DRILL RIG OPTIONS

Angle Reading Instruments ARI 6C, 157C and 1257C

The working menu presents the rotation angle and the lookout angle. Hole depth measurements is option (ARI 6C).

The working menu Production Drilling presents the rotation angle, feed angle and horizontal angle (ARI 157C).

The Angle Reading Instruments are electronic indication systems used on the production drill rigs Simba 157 and Simba 250/1250 series. ARI 6C is a system that indicates the feeder direction. This system indicates the rotation angle and lookout angle. The system is also available with hole depth measurement (option). With this option the hole depth that has been reached and also the drilling rate in metres per minute are shown instantaneously on the display. The rotation angle can show values between 0 and 360 degrees. Theoretically, the lookout angle can have a value between -180 and +180 degrees, but the angle is limited mechanically to smaller values. The working menu also shows the direction in which the angular value in question is to rise (positive direction). This is shown by means of symbols in the upper right-hand corner of the menu where the arrow in the symbols indicates the positive direction. If the system is equipped for hole depth measurement (option), the measured hole depth is presented numerically in metres. While drilling is in progress, the drilling rate is also shown along a ruler graduated in metres per minute. When drilling is interrupted, the position of the rock drill cradle is shown instead. The system includes different menus for setting sensor values, zero point for rotation direction and lookout direction. The system also includes diagnostic fault indication and fault finding. ARI 157 is an electronic angle indication system. A display screen on the control panel shows feeder angles in relation to the rig or another selected direction (reference direction). The directional control is adapted to the BUT 4 boom.

Production Drilling in Underground Mining

The working menu Production Drilling shows three different angles: • Rotation angle (shown in relation to the defined zero point). • Feed angle (shown if the rotation angle is less than +/- 75 degrees from the vertical plane). • Horizontal angle (shown when the feed angle is not shown, that is when the feeder rotates to the closest horizontal position). The working menu Production Drilling also shows information on which rotation direction and lookout direction should generate increasing angle values. This is shown using symbols in the right hand corner of the menu, where the arrow in the symbols indicates a positive direction. The system has a number of menus for viewing, setting and calibration of different sensors. A diagnostic fault indication and fault finding system is also included. User menu to define the password when required. ARI 157C also contains a working menu for Drift Drilling. ARI 1257 is an electronic angle indication system. Besides the same functionality as ARI 157 the ARI 1257 also has the possibility to show the distance between the feed and the rig in the working menu.

Visit www.atlascopco.com/cmt for more information

109

secoroc grinding

The right tools to get you back on the cutting edge

Every regrinding operation requires its own special tool. The wrong one can easily damage your bits. With Secoroc Grind Matic grinding equipment – complemented by a global service organization – you needn’t worry. Your bits will soon be as good as new.

A machine for every occasion Grinding machine

Button bits

Grind Matic BQ2



Grind Matic Jazz



Grind Matic Manual B



Grind Matic HG



DTH/COPROD bits

Cross-type bits

Integrals

 

 



Grind Matic BQ2-DTH



Grind Matic Manual B-DTH*



Grind Matic X

Reaming bits



A useful tip: use a Secoroc grinding template, and you’ll see when it’s time for a regrind.



Grind Matic Swing



Grind Matic Senior



 Recommended

110

Can be used

* Can be used for ODEX pilot bits and reaming bits.

Production Drilling in Underground Mining

secoroc grinding

Grinding

Grind Matic BQ2

Grind Matic BQ2-DTH

Grind Matic Jazz

Semi-automatic grinding machine for button bits

Semi-automatic grinding machine for DTH- and COPROD bits

Grinding capacity Maximum height of drill bit Maximum diameter of drill bit Maximum bit skirt diameter Minimum distance between buttons

Grinding capacity Maximum height of drill bit Maximum diameter of drill bit Minimum distance between buttons

Rig-mounted, semi-automatic grinding machine for tapered, threaded, DTH- and COPROD bits

200 mm (77⁄8") 127 mm (5") 120 mm (4.75") 3,5 mm ( ⁄64") 9

Technical data Air pressure, max. 7 bar (101.5 psi) Air pressure, min. 4 bar (58 psi) Air consumption 40 l/min Capacity of cooling-fluid tank 22 l Output, spindle motor 1,00 kW Output, driving plate motor 0,15 kW Output, coolant pump motor 0,10 kW Speed, spindle 14900 r/min Speed, table (50 Hz) 46 r/min Speed, table (60 Hz) 55 r/min Voltage working lighting 12 V Weight, excluding packaging 222 kg (490 Ib) Transport dimension L 173 x W 103 x H 116 mm (6¾" x 4" x 4 5⁄8") Accessories included in delivery Allen key, 8 mm (1 piece) Centring cup Centring device (1 piece) Coolant concentrate, 0,5 l Grinding templates, spherical and ballistic Grinding wheel, uncoated for centering Protective goggles Operator’s instructions and spare parts list Electrical specifications 220 V 3-phase 50 Hz 220 V 3-phase 60 Hz 380 V 3-phase 50 Hz 415 V 3-phase 50 Hz 415 V 3-phase 60 Hz 440 V 3-phase 60 Hz

Prod. No. 87003801 87003805 87003800 87003802 87003804 87003806

Prod. code 3800-49 3800-60 3800-52 3800-54 3800-62 3800-63

Note: Grind Matic BQ2 must be completed with grinding wheels, centring cups, bitholders (indicate button size and thread dimension) and indexing templates.

650 mm (2'15⁄8") 178 mm (7") 3,5 mm (9⁄64")

Technical data Air pressure, max. 7 bar (101.5 psi) Air pressure, min. 4 bar (58 psi) Air consumption 40 l/min Capacity of cooling-fluid tank 22 l Output, spindle motor 3,00 kW Output, table drive motor 0,15 kW Output, coolant pump motor 0,10 kW Speed, spindle 14900 r/min Speed, table (50 Hz) 22 r/min Speed, table (60 Hz) 26 r/min Voltage working lighting 12 V Weight, excluding packaging 345 kg (760 lb) Transport dimension L 120 x W 120 x H 170 mm (4¾" x 4¾" x 6¾") Accessories included in delivery Coolant concentrate, 0,5 l Grinding templates, spherical and ballistic Puller Protective goggles Operator’s instructions and spare parts list Electrical specifications 220 V 3-phase 50 Hz 220 V 3-phase 60 Hz 380 V 3-phase 50 Hz 415 V 3-phase 50 Hz 415 V 3-phase 60 Hz 440 V 3-phase 60 Hz

Grinding capacity Maximum distance between bit holder and grinding wheel Maximum diameter of drill bit Minimum diameter of drill bit Minimum distance between buttons

250 mm (97⁄8") 254 mm (10") 35 mm (13⁄8") 3,5 mm (9⁄64")

Technical data Air pressure, max. 7 bar (101.5 psi) Air pressure, min. 6 bar (87 psi) Air consumption 25 l/s Coolant container 3l Output, spindle motor 1,00 kW Speed, spindle 15000 r/min Voltage 24 V Weight, excluding packaging 90 kg (198 lb) Transport dimension L 800 x W 500 x H 700 mm



(2'7½" x 1'75⁄8" x 2'3½")

Accessories included in delivery Box wrench, 11 mm Box wrench, 16 mm Grinding gauge Protective goggles Operator's instructions and spare parts list NOTE:

Prod. No. 87003901 87003904 87003900 87003902 87003905 87003906

Prod. code 3900-49 3900-60 3900-52 3900-54 3900-62 3900-63

NOTE: Grind Matic BQ2-DTH must be completed with grinding wheels, centring cups and bitholders (indicate button size, bit diameter and type of hammer). Optional accessories Prod. No. Prod. code - Auxiliary set for grinding threaded bits (excl. bitholder and templates) 87003939 9500-3939

Grind Matic Jazz must be completed with grinding wheels, centring cups, bitholders and indexing templates. Optional accessories - Anti-freeze kit - Main bit holder for DTH/ COPROD bits - Main bit holder for threaded bits - Mounting bracket for Atlas Copco drill rig - with cabin - without cabin - 3-leg stand - Centring tool

Prod. No. Prod. code 87004315 9500-4315 87004268

9500-4268

87004214

9500-4214

87004388 87004456 87004450 87004465

9500-4388 9500-4456 9500-4450 9500-4465

Grind Matic Jazz, std Prod. No. Prod. code 87004100 9500-4100 incl. main bit holder for threaded bits Grind Matic Jazz, DTH Prod. No. Prod. code 87004300 9500-4300 incl. main bit holder for DTH/COPROD bits

Production Drilling in Underground Mining

111

secoroc grinding

Grinding

Grind Matic Manual B

Grind Matic Manual B-DTH

Grind Matic HG

Hand-held portable grinding machine for button bits

Hand-held portable grinding machine for DTH bits

Hand-held grinding machine for button bits

Grinding capacity Maximum diameter of bit skirt Threaded bits, maximum diameter Retrac, maximum diameter Tube drilling, maximum diameter

Grinding capacity Maximum height of drill bit Maximum diameter of drill bit Maximum diameter of bit shank

Grinding capacity Button size

90 mm (39⁄16") 127 mm (5") 127 mm (5")* 152 mm (6")*

Technical data Air pressure, max. 7 bar (101.5 psi) Air consumption 15 l/s Coolant container 10 l Idling speed of hand-held grinder 30000 r/min Speed of bit rotation 0–45 r/min Weight, excluding packaging 55 kg (121.3 Ib) Weight, including packaging 90 kg (198.4 Ib) Transport dimension L 1200 x W 800 x H 850 mm (3'11¼" x 2'7½" x 2'9½") * Large clamping device necessary Accessories included in delivery Allen key, 4 mm Centring fingers (4 pcs) Grinding templates, spherical and ballistic Hand-held grinder, 30000 r/min Open end spanner, 14 mm (2 pcs) Protective goggles Operator’s instructions and spare parts list NOTE: Grind Matic Manual B must be completed with grinding wheels and bitholders.

506 mm (1'77⁄8") 203 mm (8") 170 mm (6¾")

Technical data Air pressure, max. 7 bar (101.5 psi) Air consumption (incl. gauge grinding) 25 l/s Air consumption (excl. gauge grinding) 23 l/s Coolant container 10 l Dimension of grinding belt 50 x 1500 mm (2" x 4'11") Idling speed of hand-held grinder 18000 r/min Speed of bit rotation 0–45 r/min Weight, excluding packaging 110 kg (253 lb) Weight, including packaging 148 kg (326 lb) Weight of gauge grinding unit, net 27,5 kg (60.6 lb) Weight of gauge grinding unit, gross 35 kg (77.2 lb) Transport dimension L 1200 x W 800 x H 940 mm (3'11¼" x 2'7½" x 3'1") Accessories included in delivery Allen key, 5 mm Allen key, 6 mm Centring fingers (4 pcs) Grinding belt (4 pcs)* Grinding templates, spherical and ballistic Hand-held grinder (spherical, 18000 r/min) Open end spanner, 14 mm (2 pcs) Protective goggles Operator’s instructions and spare parts list

Optional accessories - Vibration absorbing sleeve to fit the hand-held grinder - Set of 5 centring fingers

Prod. No. Prod. code

*) When ordering gauge grinding unit, Product No. 87002302 / Product code 9500-2302.

87001931 87001935

NOTE: Grind Matic Manual B-DTH must be completed with grinding wheels and bitholders.

Grind Matic Manual B

Prod. No. Prod. code 87001890 9424

112

9500-1931 9500-1935

Optional accessories - Gauge grinding unit complete - Grinding belt for gauge grinding (set of 10 pcs) - Centring fingers (set of 5 pcs), 30000 r/min - Clamping device for threaded bits

Prod. No. Prod. code

Grind Matic Manual B-DTH

Prod. No. Prod. code 87002300 9425

87002302

9500-2302

87002399

9500-2399

87001935

9500-1935

87002401

9500-2401

7–20 mm (9⁄32"–25⁄32")

Technical data Air pressure, max. 7 bar (101.5 psi) Air consumption, unloaded 50 l/s Air consumption, loaded (at 6 bar, 86 psi) 42 l/s Hose dimension, air 12,5 mm (½") Hose dimension, water 6,3 mm (¼") Idling speed 17000 r/min Water flushing pressure, max. 4,5 bar (65.3 psi) Weight, excluding hoses 2,8 kg (6.2 Ib) Accessories included in delivery Adjustable angle connector Allen key, 2 mm Allen key, 3 mm Allen key, 5 mm Claw coupling (6,3 mm) Grease gun Grinding templates, spherical and ballistic Hose (PVC 03) Hose (PVC 6; L = 0,1 m) Hose clamp (7–8,5 mm) Hose clamp (11–13 mm) Hose clamp (26–38 mm) Nipple Pipe (L = 0,3 m) Seal kit Seat Support ring Operator’s instructions and spare parts list Optional accessories - Lubricator - Reconditioning tool for grinding cups

Prod. No. Prod. code 87002750 9500-2750 87002810

Grind Matic HG

Prod. No. Prod. code 87002435 9542

9500-2810

Production Drilling in Underground Mining

secoroc grinding

Grinding

Grind Matic X

Grind Matic Swing

Grind Matic Senior

Grinding machine for cross-type bits

Grinding machine for integrals

Grinding machine for integrals

Grinding capacity Maximum diameter of cross-type bit

Technical data Air pressure, max. 7 bar (101.5 psi) Air consumption (at 6 bar, 86 psi) 25 l/s Cutting-edge angle 110° Cutting-edge radius 80 mm (35⁄32") Gauge grinding arrangement included Hose connections: - Air 12,5 mm (½") - Water 6,3 mm (¼") Idling speed 4080 r/min Power output 1,10 kW Size of grinding wheel - D x T x H 125 x 63 x 32 mm (47/8" x 215/32" x 1¼") - DI x TI 80 x 50 mm (35/32" x 2") Spindle diameter 16 mm (5/8") Weight incl. grinding wheel and 1,5 m water hose 27,5 kg (61 lb)

Technical data Air pressure, max. 7 bar (101.5 psi) Cutting-edge angle, adjustable 90–130° Grinding wheel -DxTxH 200 x 102 x 32 mm (77⁄8" x 4" x 1¼) - DI x TI 150 x 80 mm (57⁄8" x 35⁄32") - Cutting-edge radius, adjustable 80-130 mm (3 5⁄32"–51⁄8") Idling speed, electric 50 Hz 2840 r/min Idling speed, electric 60 Hz 1690 r/min Output 3-phase 1,50 kW Rod hex. max. 25 mm (1") Weight excluding packaging 105 kg (232 lb) Weight including packaging 120 kg (265 lb) Transport dimension L 800 x W 600 x H 650 mm (2'7½" x 1'115⁄8" x 2'15⁄8")

64 mm (217/32")

Technical data Grind Matic X (380 V, 50 Hz) Output 1,70 kW Idling speed, 50 Hz 1400 r/min Idling speed, 60 Hz 1680 r/min Output, grinding device 0,37 kW Automatic grinding action, 50 Hz 117 strokes/min Automatic grinding action, 60 Hz 140 strokes/min Grinding wheel, frontal grinding: Maximum diameter Maximum width

300 mm (1113⁄16") 68 mm (211⁄16")

Grinding wheel, gauge grinding: Diameter Width

300 mm (1113⁄16") 32 mm (1¼")

Weight, excluding packaging Weight, including packaging

235 kg (518 Ib) 360 kg (794 Ib)

Accessories included in delivery Flange washer Grinding template, cross-type bit Mandrel, complete Protective goggles Wheel dresser Wheel dressing template, cross-type bit Operator’s instructions and spare parts list Electrical specifications 220 V 3-phase 50 Hz 220 V 3-phase 60 Hz 380 V 3-phase 50 Hz 380 V 3-phase 60 Hz 415 V 3-phase 50 Hz 415 V 3-phase 60 Hz 440 V 3-phase 60 Hz

Prod. No. 87002499 87002507 87000608 87002508 87002502 87002509 87002510

Prod. code 9502-49 2507 9502-52 9502-61 9525 9502-62 9502-63

Accessories included in delivery Grinding template Grinding wheel Grind Master Soft Pin wrench Protective goggles Operator’s instructions and spare parts list

Accessories included in delivery Grease gun Grinding template Grinding wheel, Grind Master Hard Protective goggles Socket wrench Wrench Operator’s instructions and spare parts list

Optional accessories Prod. No. - Grinding wheel Grind Master Hard 87002589 - Grinding wheel Grind Master Soft 87002811 - Chuck bushing wear gauge H19 (0,75") 90002667 H22 (0,85") 90002668 H25 (1") 90002669

Electrical specifications 220 V 3-phase 50 Hz 220 V 3-phase 60 Hz 380 V 3-phase 50 Hz 380 V 3-phase 60 Hz 415 V 3-phase 50 HZ 415 V 3-phase 60 Hz 440 V 3-phase 60 Hz

Grind Matic Swing

Production Drilling in Underground Mining

Prod. code 9550 9500-2811 9131 9132 9133

Prod. No. Prod. code 87002482 9544

Prod. No. 87002485 87002493 87135402 87002494 87002488 87002495 87002496

Prod. code 9511-49 9427 9511-52 9428 9519 9511-62 –

Optional accessories Prod. No. - Grinding wheels Grind Master Hard 87002591 Grind Master Soft 87002813 - Spacer plate for H19 integral 87000519 - Chuck bushing wear guage H19 (0.75") 90002667 H22 (0.85") 90002668 H25 (1") 90002669

Prod. code



9552 9500-2813 9500-0519 9131 9132 9133

113

secoroc grinding

Diamond grinding cups for

Centring cups for

Grind Matic HG

Grind Matic BQ2/BQ2-DTH For button size

Product No.

Product code

Dimension, mm

Product No.

Product code

7,0

87002566

9500-2566

7,0 mm

87001040

9500-1040

8,0

87002567

9500-2567

8,0 mm

87000842

9500-0842

9,0

87002568

9500-2568

9,0 mm

87001047

9500-1047

10,0

87002569

9500-2569

10,0 mm

87001041

9500-1041

11,0

87002570

9500-2570

11,0 mm

87000840

9500-0840

12,0

87002571

9500-2571

12,0 mm

87001042

9500-1042

13,0

87002572

9500-2572

12,7 mm

87000839

9500-0839

14,0

87002573

9500-2573

13,0 mm

87001385

9500-1385

15,0

87002574

9500-2574

14,0 mm

87001043

9500-1043

16,0

87002575

9500-2575

14,5 mm

87001443

9500-1443

18,0

87002576

9500-2576

15,0 mm

87001386

9500-1386

20,0

87002577

9500-2577

16,0 mm

87001387

9500-1387

For spherical button bits

7,0

87002579

9500-2579

18,0 mm

87003943

9500-3943

8,0

87002580

9500-2580

19,0 mm

87003944

9500-3944

9,0

87002581

9500-2581

10,0

87002582

9500-2582

11,0

87002583

9500-2583

12,0

87002584

9500-2584

13,0

87002585

9500-2585

14,0

87002586

9500-2586

15,0

87002587

9500-2587

16,0

87002588

9500-2588 9500-2700

For ballistic button bits

7–8

87002700

9–10

87002701

9500-2701

11–12

87002702

9500-2702

For button bit steel removal

13–14

87002703

9500-2703

15–16

87002704

9500-2704

17–18

87002840

9500-2840

19–20

87002841

9500-2841

Grinding wheels for steel grinding Boron nitride – button bits Grind Matic BQ2 Dimension

Product No.

Product code

10–14 mm

87001530

9500-1530

Spacer for 10 mm button

87001631

9500-1631

Spacer for 11 mm button

87001632

9500-1632

Spacer for 12 mm button

87001633

9500-1633

Spacer for 13 mm button

87001634

9500-1634

Spacer for 14 mm button

87001635

9500-1635

114

Production Drilling in Underground Mining

secoroc grinding

Diamond grinding wheels for button bits Grind Matic BQ2 Grind Matic BQ2-DTH Grind Matic Jazz Grind Matic Manual B Grind Matic Manual B-DTH Standard diamond-grain wheels Dimension, mm

Product No.

Large diamond-grain wheels

Product code

Dimension, mm

Spherical

Product No.

Product code

Spherical

7

87001028

9500-1028

9

87003969

9500-3969

8

87001026

9500-1026

10

87003970

9500-3970

9

87001389

9500-1389

11

87003971

9500-3971

10

87001023

9500-1023

12

87003972

9500-3972

11

87003406

9500-3406

13

87003973

9500-3973

12

87001024

9500-1024

13

87001339

9500-1339

9

87003974

9500-3974 9500-3975

Ballistic

14

87001025

9500-1025

10

87003975

15

87001384

9500-1384

11

87003976

9500-3976

16

87001027

9500-1027

12

87003977

9500-3977

18

87003964

9500-3964

19

87003966

9500-3966

7

87003407

9500-3407

8

87003408

9500-3408

Dimension, mm

Grind Matic Manual B-DTH

Ballistic

(with the 18 000 rpm grinder) Product No.

Product code

9

87003409

9500-3409

Spherical

10

87003410

9500-3410

10

87002033

9500-2033

9500-3411

11

87002042

9500-2042

87002043

9500-2043

11

87003411

12

87003412

9500-3412

12

13

87003413

9500-3413

13

87002044

9500-2044

9500-3414

14

87002045

9500-2045

87002046

9500-2046

14

87003414

15

87003415

9500-3415

15

16

87003416

9500-3416

16

87002032

9500-2032

9500-3965

18

87002097

9500-2097

9500-3967

19

87002174

9500-2174

18 19

87003965 87003967

Grinding templates for button bits

9129

Button bits DTH, ballistic

90510758

9130

Production Drilling in Underground Mining

9

90510753

D

8

Button bits DTH, spherical

D/3

Regrind when flat is 173 of button dia.

14

,5

7

9105

,95

90503414

10

Button bits, ballistic

10

9104

Min. 0,5

Product code

90002944

12,7

Product No. Button bits, spherical

115

secoroc grinding

Bitholders for button bits Grind Matic BQ2, Jazz and BQ

Grind Matic BQ2-DTH and Manual B-DTH

Product No.

Product code

Holder R25

87003475

9500-3475

Holder R28

87003476

9500-3476

Holder SR28

87003960

9500-3960

Holder R32

87003477

9500-3477

Holder SR32

87003962

9500-3962

Holder SR35

87003956

9500-3956

Holder R38, T38

87003478

9500-3478

Holder SR38

87003978

9500-3978

Holder SR38 retrac, guide

87004081

9500-4081

Holder T45

87003479

9500-3479

IR QL4

Holder T51

87003521

9500-3521

Holder T51 retrac

87003688

9500-3688

Holder ST58

87003522

9500-3522

Holder ST68

87003523

9500-3523

Threaded bits

Tube bits

Tapered bits

Down-the-hole bits and Coprod bits

Inner diameter bit holder, mm

Product No.

COP 32

51,2

87002420

9500-2420

COP 34

54,7

87003691

9500-3691

COP 42

65,1

87002391

9500-2391

DHD3.5

55

87004514

9500-4514

DHD340

65,1

87002391

9500-2391

DHD350

84,4

87002390

9500-2390

DHD360

101,7

87002389

9500-2389

DHD380

129,2

87004523

9500-4523

69,0

87004515

9500-4515

Product code

IR QL5

88,6

87004033

9500-4033

IR QL6

106,3

87004002

9500-4002

IR QL8

136,5

87004516

9500-4516

TD90

145,9

87004516

9500-4516

Mission 5315

103,5

87004519

9500-4519

Holder 7° taper

87003524

9500-3524

ODEX Ø 90

–

87002683

9500-2683

Holder 12° taper

87003525

9500-3525

ODEX Ø 115

–

87002684

9500-2684

ODEX Ø 140

–

87002685

9500-2685

Holder 64, 76 and 89 mm reamer

87003526

9500-3526

ODEX Ø 165

–

87002686

9500-2686

Holder 89,102 and 127 mm reamer

87003527

9500-3527

ODEX Ø 190

–

87002687

9500-2687

Holder SR35 guide bit

87004056

9500-4056

COPROD 76

48,7

87004414

9500-4414

Holder R32 guide bit

87003992

9500-3992

COPROD 89

54,7

87003155

9500-3155

COPROD 102

65,7

87004415

9500-4415

COPROD 127

82,2

87002396

9500-2396

Reaming bits

Guide bits

By using the auxiliary set part 87003939 (Product No.) / 9500-3939 (Product code), Grind Matic BQ2-DTH can also use the above bit holders for threaded bits.

Grind Matic Manual B

(for clamping device compl. 87000772 / 9500-0772 Grind Matic B) Product No.

Product code

R25

87000792

9500-0792

R28

87000793

9500-0793

R32

87001848

9500-1848

R32

87000794

9500-0794

SR28

87003961

9500-3961

SR35

87003957

9500-3957

R35

87003360

9500-3360

R38/T38

87000795

9500-0795

T45

87000796

9500-0796

T51

87000802

9500-0802

with 7° taper

87001044

9500-1044

with 12° taper

87001045

9500-1045

Threaded bit

Grind Matic Manual B-DTH only Threaded bits* T38

–

87002148

9500-2148

Threaded bits* T45

–

87002149

9500-2149

Threaded bits* T51

–

87002147

9500-2147

Threaded bits* ST58

–

87002158

9500-2158

Threaded bits* ST68

–

87002154

9500-2154

*Clamping device for threaded bits

–

87002401

9500-2401

Tapered bit

Tube bit ST58

87001726

9500-1726

ST68

87001573

9500-1573

87000798

9500-0798

89, 102, 127 mm

87000799

9500-0799

Centring pin for bitholders 9500-0798 and 9500-0799.

87001070

9500-1070

Clamping device for regrinding retrac bits 64–127 mm and TDS bits 89–152 mm (ST58, ST68) without bitholder (to complete 87000772 / 9500-0772).

87001930

9500-1930

Reaming bit 64, 76, 89 mm1) 1)

1)

116

Production Drilling in Underground Mining

secoroc grinding

Grinding template for cross-type bits Product code

90002611

9102

Skivvinkel Wheel

1"

2,4 mm

1 1/2"

3/32"

110°

Cross-type bits

Product No.

3/4" 1/2" 1/4"

5 10 15

1/4" 1/2" 3/4"

Ceramic grinding wheels for cross-type bits Bit dimension

Dimension (D x T x H), mm

Product No.

Product code

29 mm

300 x 19 x 32

87002619

9500-2619

35 mm

300 x 23 x 32

87002594

9555

38–41 mm

300 x 26 x 32

87002595

9556

43 mm

300 x 28 x 32

87002618

9579

45 mm

300 x 29 x 32

87002597

9558

48–51 mm

300 x 32 x 32

87002616

9577

57 mm

300 x 38 x 32

87002600

9561

76 mm

300 x 52 x 32

87002603

9564

200 x 13 x 32

87002613

9574

200 x 32 x 32

87002615

9576

Gauge grinding wheels

Grinding template for Integral rods

40

1/8"

9101

30

20

10

3 mm

Product code

90002610

r= 80 mm 3,5/32"

Product No.

110°

Integral rods

0 5 10 15

1/4" 1/2" 3/4"

Ceramic grinding wheels for chisel bit Grinding machine Grind Matic Swing

Dimension, mm D x T x H (mm)

DI x TI (mm)

125 x 63 x 32

80 x 50, hard

Product No.

Product code

87002589

9550

”

125 x 63 x 32

80 x 50, soft

87002811

9500-2811

Grind Matic Senior

200 x 102 x 32

150 x 80, hard

87002591

9552

”

200 x 102 x 32

150 x 80, soft

87002813

9500-2813

Production Drilling in Underground Mining

117

ROCK DRILL SPECIFICATIONS

A reliable team of efficient pusher leg drills Atlas Copco rock drills and rock drilling tools are an unbeatable combination of high performance and superior reliability. The pneumatic pusher leg drills are characterized by low spare parts consumption and minimum maintenance requirements. They are robust but simply designed, with high impact energy and low air consumption. The uniform high quality of materials and

manufacturing processes contribute to the long service life of the machines. Together with the pusher legs the rock drills form an attractive and cost effective drilling unit. The pneumatic telescopic and double-telescopic pusher legs are available in a number of versions. All are of a simple, robust design for reliable operation and minimum maintenance requirements.

BBC 16W (Puma)

RH 656W

All-round rock drill which suits most drilling applications. It has a robust rifle bar rotation mechanism, long stroke and good penetration rates in hard rock. The pusher leg control is placed at the backhead of the rock drill. Suitable pusher legs for BBC 16W are BMHT 51-3 and 51, ALF 71-1 and 71, and ALF 67/80.

A rock drill with a very favourable relation of high penetration/low air consumption. It has a robust rifle bar rotation mechanism and flushing system with double concentric tubes. The low weight makes the drill handy also as a sinker. A T-handle can easily be fitted instead of using a pusher leg. Suitable pusher leg is BMK 62S.

BBC 34W (Leopard)

Stopers BBD 46WS/WR (Falcon)

Highly efficient rock drill for medium to hard rock. It has a powerful rifle bar rotation mechanism, long stroke and high impact energy. The large diameter piston makes it very efficient even with low air pressure. The pusher leg control is placed at the backhead of the rock drill. Suitable pusher legs for BBC 34W are ALF 71-1 and 71, and ALF 67/80.

All-steel rock drills suitable for production drilling, raise driving and bolting. They have a robust ratchet wheel rotation mechanism, short stroke and good penetration rates in soft and mediumhard rock. The large diameter piston makes them very efficient even with low air pressure. The WR version has clockwise rotation and can be used for nuts tightening when roof bolting.

Pusher legs

BBD 94W (Panther) High performance rock drill for soft to hard rock. It has ratchet wheel rotation mechanism, short stroke and high impact rate. It is also efficient at low air pressure. The pusher leg control is placed on the pusher leg itself. Suitable pusher legs for BBD 94W are ALF 72D-1 and 72D, and ALF 67/80D. Description

BBC 16W BBC 34W BBD 94W RH 656W

Hole range mm 27 - 40 27 - 40 27 - 40 27 - 40

Air requirement at 6 bar 1/s 60 88 97 48

The pneumatic telescopic and double-telescopic pusher legs are available in a number of versions. All are of a simple, robust design for reliable operation and minimum maintenance requirements.

Impact frequency Hz 39 38 55 34

Stroke length mm 55 70 45 60

Piston bore mm 70 80 90 65

Weight

Length

kg 26 31 27 22

mm 710 775 670 630

Stopers Air Rock drill Description consumption piston at 6 bar* bore l/s (cfm) mm BBD 46WS-6 75 (159) 75 BBD 46WS-8 75 (159) 75 BBD 46WR-6 75 (159) 75 BBD 46WR-8 75 (159) 75

118

Stroke length mm 45 45 45 45

Impact rate at 6 bar* Hz 51 51 49 49

Rotation rate at 6 bar* rev/sec 4.0 4.0 6.5 6.5

Feeding length mm 770 970 770 970

Length Length retracted extracted mm 1435 1650 1435 1650

mm 2205 2620 2205 2620

Feed piston bore mm 75 75 75 75

Weight kg 39 40 39 40

Production Drilling in Underground Mining

COMPLEMENTARY EQUIPMENT

VAM water separators

VAM water separators are based on the centrifugal principle. They feature automatic discharge via a float controlled bottom valve, and a coarse strainer for solid particles.

Water separators, fitted with claw couplings Air flow

Hose connection mm in

Description

VAM 5A

25

1

Ordering No.

Weight

l/s

cfm

kg

lb

120

254

10

22

8092 0110 82

Working pressure 10 bar (145 psi)

BLG and CLG lubricators BLG and CLG are highly effiecient oil lubricators for pneumatic equipment. Their simple, strong design make the lubricators very resistant to rough handling.

No moving parts contributes to safe and troublefree operation. The oil supply is easily adjusted even during operation.

Lubricators, fitted with claw couplings Description

Hose inner diameter mm in

Air flow

Oil volume

Weight

l/s

cfm

l

gal

kg

lb

Ordering No.

CLG 30, for both mineral and synthetic oil

25

1

15-140

32-300

1.3

0.3

3

6.6

8202 5102 39

BLG 30, for mineral oil

25

1

15-140

32-300

1.3

0.3

3

6.6

8202 5102 05

Max working pressure 20 bar (290 psi)

Air oil, synthetic lubricant with excellent lubrication, anti-corrosion and anti-freezing properties Description

Oil volume

Weight

Ordering No.

l

gal

kg

lb

0.2 l bottle

0.2

0.04

0.24

0.53

8099 0202 40

1 l bottle

1

0.22

1.1

2.4

8099 0202 36

5 l container

5

1.1

5.8

13

8099 0202 02

25 l container

25

5.5

28

62

8099 0202 20

200 l barrel

200

44

220

485

8099 0202 28

Production Drilling in Underground Mining

119

COMPLEMENTARY EQUIPMENT

Hoses The Atlas Copco rubber hose is ideal for all applications and air lines in use on building and construction sites, in mines, shipyards etc.

• The Mantex flat hose is a lightweight hose, weighing only 1/3 of a conventional rubber hose.

Round rubber, hose rolls Description

Inner diameter mm in

Outer diameter mm in

Max working pressure bar psi

Length roll m ft

Weight kg

lb

Ordering No.

Rubber hose, 30m

10

3/8

Rubber hose, 30m

12.5

1/2

22

5/8

16

232

30

98

12.3

27.1

9030 2038 00

Rubber hose, 30m

16

5/8

25

1

16

232

30

98

13.9

30.6

9030 2039 00

Rubber hose, 30m

20

3/4

30

13/16

16

232

30

98

19.3

42.5

9030 2040 00

Rubber hose, 20m

20

3/4

30

13/16

16

232

20

65

12.9

28.3

9030 2040 03

Rubber hose, 30m

25

1

36

15/16

16

232

30

98

24.0

52.9

9030 2041 00

Rubber hose, 20m

25

1

36

15/16

16

232

20

65

16.0

35.3

9030 2041 03

17

11/16

16

232

30

98

6.9

15.2

9030 2037 00

Round rubber hoses, pre-mounted hoses fitted with couplings and hose clamps Description for products

Inner diameter mm in

Outer diameter mm in

Max working pressure bar psi

Length roll m ft

Weight kg

lb

Ordering No.

Universal

12.5

1/2

22

5/8

16

232

15

49

5.9

13

9030 2045 00

Universal

20

3/4

30

13/16

16

232

15

49

7.6

16.8

9030 2049 00

Universal

25

1

36

15/16

16

232

15

49

12

26.5

9030 2050 00

Mantex flat hoses, hose rolls Description

Inner diameter mm in

Thickness

Max working pressure bar psi

Length roll m ft

Weight

Ordering No.

mm

in

kg

lb

Lightweight hose, 60m

20

3/4

2.3

3/32

20

290

60

195

13

29

9030 2014 00

Lightweight hose, 100m

20

3/4

2.3

3/32

20

290

100

325

22

48

9030 2014 01

Lightweight hose, 200m

20

3/4

2.3

3/32

20

290

200

650

44

96

9030 2014 02

Lightweight hose, 60m

25

1

2.5

3/32

20

290

60

195

16

35

9030 2006 00

Lightweight hose, 100m

25

1

2.5

3/32

20

290

100

325

26

57

9030 2006 01

Lightweight hose, 200m

25

1

2.5

3/32

20

290

200

650

52

114

9030 2006 02

Lightweight hose, 60m

40

11/2

2.5

3/32

14

203

60

195

27

60

9030 2007 00

Lightweight hose, 60m

50

2

2.8

7/64

14

203

60

195

36

79

9030 2008 00

Lightweight hose, 40m

76

3

3.0

1/ 8

10

145

40

130

36

79

9030 2009 00

Max working pressure is calculated with safety factor 5. Burst pressure = 5 x Max working pressure

Mantex flat hoses, pre-mounted hoses with fitted couplings and hose clamps Description

120

Inner diameter mm in

Universal

20

3/4

Universal

25

1

Thickness

Max working pressure bar psi

Length roll m ft

Weight kg

lb

Ordering No.

mm

in

2.3

3/32

20

290

20

65

4.5

10

9030 2015 00

2.5

3/32

20

290

20

65

6

13

9030 2011 00

Production Drilling in Underground Mining

COMPLEMENTARY EQUIPMENT

Claw couplings You will not find a better claw coupling anywhere with such a low pressure drop. And its strength and life span are unsurpassed. The Atlas Copco couplings are always easy to assemble and dismantle. They are also available with a lock nut to provide effective, reliable sealing even under extreme conditions.

• Hard treatment resistant • Made of galvanized drop-forged, hardened steel • All couplings mate, regardless of nipple and thread size

Claw couplings Connection

Hose inner diameter mm in

Bore

Weight

Ordering No.

mm

in

kg

lb

6.3

1/4

5.0

3/16

0.11

0.25

9000 0308 00

Hose nipple

10.0

3/8

8.0

5/16

0.13

0.29

9000 0309 00

Hose nipple

12.5

1/2

10.5

13/32

0.14

0.31

9000 0310 00

Hose nipple

16.0

5/8

13.5

17/32

0.14

0.31

9000 0311 00

Hose nipple

20.0

3/4

17.2

11/16

0.15

0.33

9000 0312 00

Hose nipple

25.0

1

22.0

7/8

0.17

0.38

9000 0313 00

Hose nipple with lock nut

10.0

3/8

8.0

5/16

0.29

0.64

9000 0260 00

Hose nipple with lock nut

12.5

1/2

10.5

13/32

0.29

0.64

9000 0261 00

16.0

5/8

13.5

17/32

0.29

0.64

9000 0262 00

Hose nipple with lock nut

20.0

3/4

17.2

11/16

0.32

0.71

9000 0263 00

Hose nipple with lock nut

25.0

1

22.0

7/8

0.32

0.71

9000 0264 00

Hose nipple

Hose nipple with lock nut

Claw couplings Connection

Connecting thread

Bore

Weight

Ordering No.

mm

in

kg

lb

External thread

G3/8A

11.3

7/16

0.11

0.25

9000 0300 00

External thread

G1/2A

14.8

37/64

0.12

0.27

9000 0301 00

External thread

G3/4A

19.0

3/4

0.13

0.29

9000 0302 00

External thread

G1A

25.5

1

0.13

0.29

9000 0303 00

Internal thread

G3/8

15.0

19/32

0.12

0.27

9000 0304 00

Internal thread

G1/2

18.6

3/4

0.13

0.29

9000 0305 00

Internal thread

G3/4

24.2

1

0.14

0.31

9000 0306 00

Internal thread

G1

30.3

13/16

0.15

0.33

9000 0307 00

0.18

0.40

9000 0314 00

Cover

Packings and lock spring for claw couplings Fit to coupling ordering No. 9000....

Comment

Ordering No.

Packing

0300 00 to 0314 00

Can be replaced by special packing 9000 0000 01

9000 0000 00

Packing

0260 00 to 0262 00

Packing

0263 00 and 0264 00

Description

Lock spring

9000 0015 00 Can be replaced by special packing 9000 0319 00

Fits to all 9000 0300 00 to 9000 0314 00 couplings

9000 0268 00 3176 8640 00

Special packings can be used in max. temp +200˚C (390˚F) steam and -40˚C to +250˚C (-40˚F to +482˚F) air. Excellent for neutral and alkaline liquids (pH above 5)

Production Drilling in Underground Mining

121

COMPLEMENTARY EQUIPMENT

Hose couplings for rubber hose Guide, hose couplings for round rubber hoses Hose inner diameter mm in

Hose jointing nipple

Hose clamp

0347 6105 00

10

3/8

9000 0215 00

12.5

1/2

9000 0216 00

12.5

1 /2

16

5/8

9000 0217 00

20

3/4

25

1

Hose clamp

Hose nipple

Cup nut Wing

Cup nut Hexagonal

G5/8 9000 0331 00 G5/8 9000 0331 00 G3/4 9000 0332 00 G3/4 9000 0332 00 G7/8 9000 0333 00 G11/8 9000 0334 00

9000 0321 00 9000 0194 00

9000 0322 00 9000 0323 01

9000 0337 00

9000 0195 00

9000 0324 00

9000 0337 00

9000 0218 00

9000 0196 00

9000 0325 00

9000 0338 00

9000 0219 01

9000 0197 00

9000 0326 00

9000 0339 00

Connecting nipples External thread

G3/4A - G3/4A 9000 0343 00 G7/8A - G1A 9000 0345 00 G11/8A - G1A 9000 0346 00

Guide, hose couplings with particularly coarse thread for round rubber hoses Hose inner diameter mm in

Hose clamp

Hose nipple

Packing

Cup nut Wing

12.5

1/2

9000 0194 00

9000 0370 00

9000 0025 00 3)

9000 0154 00

20

3/4

9000 0196 00

9000 0371 00

9000 0025 00 3)

9000 0154 00

25

1

9000 0197 00

9000 0372 00

9000 0025 00

9000 0154 00

3)

Connecting nipples External thread

Connecting nipples Internal thread

G1/2A 9000 0028 00 G3/4A 9000 0029 00 G1A 9000 0030 00

G1/2 9000 0033 00 G3/4 9000 0034 00 G1 9000 0035 00

Guide, hose couplings for Mantex flat hoses Hose inner diameter mm in

3/4

20 25

1

Hose jointing nipple

Hose clamp

Claw coupling

Packing

9000 0218 00 1) 9000 0219 01 1)

9000 0194 00 9000 0196 00

9000 0312 00 9000 0313 00

9000 0000 00 3) 9000 0000 00 3)

Guide, hose couplings for Mantex flat hoses Hose inner diameter mm in

Hose jointing nipple

Hose clamp

Hose nipple

Packing

Cup nut Wing

40

11/2

9000 0220 00 2)

9000 0381 00

9000 0373 00

9000 0026 00 3)

9000 0159 00

50

2

9000 0221 00 2)

9000 0198 01

9000 0374 00

9000 0026 00 3)

9000 0159 00

76

3

9001 0045 00 2)

9000 0189 00

9001 0025 80

3176 8294 00 3)

3176 8295 00

3 76 1) 2 hose clamps per nipple needed 2) 4 hose clamps per nipple needed 3) All claw couplings and hose nipples supplied with packings

122

Connecting Connecting nipples nipples External thread Internal thread

G11/2A 9000 0031 00 G2A 9000 0332 00 G2A 3176 8296 00 G3A 3215 7766 00

G11/2 9000 0036 00 G2 9000 0037 00

Production Drilling in Underground Mining

COMPLEMENTARY EQUIPMENT

Air-powered pumps – for safe handling of liquids under difficult conditions DOP diaphragm pumps

DOP diaphragm pumps are designed for the most polluted and viscous media, as well as highly abrasive and inflammable fluids. • Submersible • Easy to start despite sedimentation • Self-priming which means that unnecessary handling is avoided • Can handle large solid particles up to 30 mm in diameter. • Can be connected in series to increase the head • Pump housing made from aluminium alloy results in low weight • Easy to service – the valves are accessible for servicing without dismantling the chambers

Both clean and polluted liquids

Pumps used for polluted liquids in the construction and mining industries have to satisfy stringent demands for quality and reliable operation. They must be able to withstand difficult conditions with regard to both the surroundings and the media being conveyed, with a minimum of maintenance. Technical data DOP 15N

Capacity diagram for DOP pumps at 6 bar (87 psi) Delivery head feet m 229 70 196 60

Max. head Max. flow Max air requirement Weight Height Length Width

59 m 7 l/s 34 l/s 31 kg 585 mm 390 mm 330 mm

194 ft

Connection thread1

Fluid outlet Air inlet G 21/2 G 3/4

Ordering No

8492 0101 48

72 cfm 68 lb 23 in 151/4 in 13 in

164 50 131 40   98 30   66 20   33 10    0   0

DOP 15

flow 0   5   10   15   20   25   30 l/s 0 65 132 198 264 330 396 imp gal/min

Equipment DOP 15 Pos Description Included in kit, Ordering No qty DOP 15N kit 8492 0101 55 1 Pump   1 2

Outlet hose 63 mm x 32 m (21/2 in x 105 ft) incl. fittings      1

4950 0191 90

2

Reinforced outlet hose 63 mm x 25 m (21/2 mm x 82 ft) incl. fittings

4950 0196 90

3

Lubricator CLG 30 for synthetic oil (Air-oil) or mineral oil   1

8202 5102 39

4

Connection parts for lubricator CLG 30 Valve, air hose 20 mm x 3 m (3/4 in x 10 ft) incl. fittings  

9030 0500 90

5

Reinforced spiral suction hose 63 mm x 5 m (21/2 in x 16 ft) incl. fittings and strainer

3330 0069 90



Spare parts kit for DOP 15N (see spare parts list 9853 5492 90)

3330 0071 91



Spare parts kit for DOP 15F (see spare parts list 9853 5492 90)

3330 0071 92

Production Drilling in Underground Mining

The pumps can also be delivered as complete pump systems. In addition, there are a number of optional equipment. The illustration shows a DOP 15N kit plus connection parts for the lubricator.

123

LUBRICATION

COP OIL

The oil for Atlas Copco pneumatic and hydraulic rock drills, and DTH hammers that unites technology and environment

Main features

COP OIL

The development of lubricating oil for pneumatic and hydraulic tools has been driven by the high demands on environment and reliability. COP OIL is made of carefully selected components that give the highest technical performance. COP OIL has a broad temperature range that gives you optimum operation in the most variable temperatures. It withstands heavy loads and protects against wear and corrosion.

• Excellent lubricating properties. • Reduces the risk of scoring and abrasion. • Protects against corrosion and oxidation. • Insensitive to temperature variations. Works equally well throughout the ambient temperature range - 35°C to + 45°C (-31oF to +113oF). • Adhesion and larger drop formation contribute to the very good lubricating properties. • Based on > 90% renewable raw materials. • Readily biodegradable according to OECD301

More and more users are recognising the advantages of using environmentally adapted lubricants. In applications where lubricant is contaminating the surroundings, the use of environmentally adapted lubricants will therefore be a strong coming demand. COP OIL is based on renewable raw materials that are readily biodegradable. COP OIL is specially developed for Atlas Copco pneumatic and hydraulic rock drills and down-the-hole hammers.

Density, 15°C Viscosity at 40°C Viscosity at 100°C Index of viscosity Flash point Lowest flow temperature

Mineral oil

Readily biodegradable

20

124

927 kg/m³ 65 cSt 13.4 cSt 215 250ºC (482ºF) - 39ºC (-38ºF)

Part number

COP OIL

Number of days

• Approved in accordance with the German authorities ”Blue Angel” • ”Approved” in accordance with the Swedish authorities ”Ren Smörja”

Technical data COP OIL

Biodegradability according to OECD 301

10

Additives in the oil are:

28

3115 3125 00 3115 3126 00 3115 3127 00

Can 10 litres Can pallet 48 x 10 litres Drum 208 litres

Using Atlas Copco COP OIL ensures that you are doing your best for both the environment and your equipment!

Production Drilling in Underground Mining

SERVICE WORKSHOPS

Mobile Service and ROCKHOSE Workshops

For easy and convenient service of drill rigs and hydraulic hoses pedestal; shelves; tool-board with tool hooks; 14 m long hose roll-up for air pressure; 17 m long, 230 V electric cable roll-up; writing desk with lockable pedestal; powder fire extinguisher; first aid panel; ventilation system; and heating fan.

When you invest in an Atlas Copco drill rig you receive a quality product. Quality gives reliability, availability and high productivity, which is essential to make profit. But the quality of any machine has to be maintained in order to give continuous high performance and good operating economy. And that can only be achieved through regular preventive maintenance and the use of Genuine Parts from Atlas Copco. A service workshop located on site or close by is the key solution to rapid maintenance and repair routines. This is why Atlas Copco have designed and equipped mobile workshops to serve different servicing requirements.

Mobile Workshop

The fully equipped version of the Mobile Workshop comes complet with standard tool kit, comprising all hand tools needed for carrying out service and repair work; 30 t hydraulic press, with mandrel set; 500 kg extensible hoist beam with manual tackle; and a smalI-part cleaning booth, with exhaust. The Mobile Workshop can then be completed with a number of well thought-out options of special tools, instruments and machinery to optimize efficiency. Mobile Workshops are suitable for installation of drill bit grinding equipment, and the Secoroc Grind Matic Manual B airpowered, handheld portable grinding machine can be supplied.

Convenient service

The latest enhanced versions of the well regarded Atlas Copco Mobile Workshop and Mobile ROCKHOSE Workshop contain all of the equipment needed for maintenance and increased availability of rockdrills and drill rigs. They are housed in 20 ft ISO standard steel containers, internally insulated and fitted with non-slip aluminium floor plating. Each workshop container is equipped with heating and has a complete electric and compressed air line system for immediate connection to external electrical and pneumatic power sources.

Mobile ROCKHOSE Workshop

A new approach to hose maintenance is the Mobile ROCKHOSE Workshop with the hose assembly centre, a complete hose mounting workbench, designed to fulfil all your needs for a safe and professional assembly of hydraulic hoses with up to four reinforcement layers. The centre is delivered with a hose reel, cutting machine, peeling machine, marking machine, hose cleaning equipment and hose press. The centre is delivered with all the necessary accessories.

Basic Mobile Workshop

The container can be delivered as a Basic Mobile Workshop without any tools or machinery for those who wish to equip the container themselves. In this version it has a workbench, 2.5 m long with vice and lockable

Each container has two main doors at the front that open completely, and on one side they have a window with steel shutter.

View inside fully equipped Mobile Workshop.

View inside fully equipped Mobile ROCKHOSE Workshop.

The containers have a base socket provided for forklift transportation. The external dimensions of the containers are 6.0 x 2.5 x 2.6 m, and they weigh around 3 t, depending on equipment. The mobile workshops can be delivered for 230V/50 Hz and 380V/50 Hz, or other voltages on request.

Production Drilling in Underground Mining

2600

General information

2500

6000

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MARKET MATERIAL

Conversion table This unit

Times

Equals

Length mm (millimetres)...................... x 0.001......................= m cm (centimetres)....................... x 0.01........................= m dm (decimetres)........................ x 0.1..........................= m km (kilometres)......................... x 1000......................= m in (inches).................................. x 25.4........................= mm ft (feet)....................................... x 0.305......................= m yd (yard).................................... x 0.914......................= m miles.......................................... x 1609.......................= m Power kW (kilowatts)............................ x 1000......................= W hp (horsepower)....................... x 735.5......................= W hp (horsepower), UK................ x 745.7......................= W ft.lbf/sec..................................... x 1.36........................= W Btu/h........................................... x 0.29........................= W Volume l (litres)....................................... x 0.001......................= m3 ml (millilitres)............................ x 0.001......................= l dm3 (cubic decimetres)............. x 1.0..........................= l cm3 (cubic decimetres)............. x 1.0..........................= ml mm3 (cubic millimetres) .......... x 0.001......................= ml in3 (cubic inches)....................... x 16.39......................= ml ft3 (cubic feet)............................ x 28.316....................= l Imperial gallon.......................... x 4.546......................= l US gallon................................... x 3.785......................= l Ounces (Imp. fluid oz).............. x 28.41......................= ml Ounces (US fluid oz)................. x 29.57......................= ml Pints (US liquid)........................ x 0.4732....................= l Quarts (US liquid)..................... x 0.9463....................= l yd3 (cubic yards)....................... x 0.7646....................= m3 Force kN (kilonewton)......................... x 1000......................= N kp (kilopond)............................. x 9.81........................= N kgf (kilogramme force)............. x 9.81........................= N Ibf (pound force)....................... x 4.45........................= N

This unit

Times

Equals

Mass (weight) g (grammes). ............................. x 0.001.................... = kg t (tonnes, metric)....................... x 1000.................... = kg grains......................................... x 0.0648.................. = g oz (ounce).................................. x 28.35.................... = g ozt (troy ounce)......................... x 31.10.................... = g lb (pounds)................................ x 0.4536.................. = kg tons (long, US).......................... x 1016..................... = kg tons (UK).................................... x 1016..................... = kg tons (short)................................ x 907....................... = kg Speed km/h (kilometres/hour)............. x 0.2777.................. = m/s m/s (metres/sec)........................ x 3.6........................ = km/h mph (miles/hour)...................... x 0.45...................... = m/s mph (miles/hour)...................... x 1.61...................... = km/h ft/s (foot/second)....................... x 0.3048.................. = m/s ft/s (foot/second)....................... x 18.29.................... = m/min ft/s (foot/minute)....................... x 0.3048.................. = m/min Frequency blows/minute............................ x 0.017.................... = Hz kHz (kiloHertz)........................... x 1000.................... = Hz rpm (rev/minute)....................... x 0.01667................ = r/s degrees/second......................... x 0.1667.................. = r/min radians/second . ....................... x 0.1592.................. = r/s Pressure bar.............................................. x 100....................... = kPa bar.............................................. x 100 000............... = Pa 2 kp/cm ........................................ x 0.98...................... = bar atm (atmospheres)................... x 1.01...................... = bar 2 psi (pounds/in )......................... x 6.895.................... = kPa psi............................................... x 0.06895................ = bar

Torque kpm (kilopondmetres).............. x 9.81........................= Nm Ibf in (poundforce inch) ........... x 0.11........................= Nm Ibf ft (poundforce foot)............. x 1.36........................= Nm

Area mm2 (square mm)..................... x 0.000001............. = m2 cm2 (square cm)........................ x 0.0001................. = m2 in2 (square inches).................... x 645....................... = mm2 ft2 (square feet).......................... x 0.0929.................. = m2 yd2 (square yards)..................... x 0.8361.................. = m2 Acres ......................................... x 4047..................... = m2 Square miles............................. x 2.590.................... = km2

Equals Divided This   by    unit

Equals Divided This   by    unit

126

Production Drilling in Underground Mining

notes

Production Drilling in Underground Mining

127

Notes

128

Production Drilling in Underground Mining

Want peace of mind? Visit our Master Class Support!

By launching our One-Stop-Shop, we are committed to make life simple and business more profitable for you. Within our concept you will find genuine parts as well as technical competence regarding your equipment. You will become familiar with new, innovative service and logistic solutions to enhance availability and productivity. Interested in our Master Class Support? You are most welcome to get more information at our local customer centres.

Committed to your superior productivity.

www.atlascopco.com

Atlas Copco

Experience and knowledge

Committed to your superior productivity.

Printed matter no. 9851 2558 01

Production Drilling in Underground Mining

Working with Atlas Copco means working with highly productive rock drilling solutions. What’s more, the people you work with are the best – with the ability to listen and to understand your diverse needs. This approach requires experience and knowledge, presence, flexibility and involvement in your processes. It means making customer relations and service a priority. Through interaction, innovation and a continuous drive to improve the way we do things – we help you achieve results.

Atlas Copco Rock Drills AB

2008

www.atlascopco.com

First edition 2008 www.atlascopco.com