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TYPES OF DRILLING MACHINES

USED IN TUNNELING

OUTLINE

INTRODUCTION

DRILLING

TYPES OF DRILL MACHINES

RIG PRODUCTIVITY AND AUTOMATION

CONCLUSION

What’s Drilling?

Drilling is the operation of producing circular

hole in the work-piece by using a rotating cutter

called DRILL

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Drilling Machines

The machine used for drilling is

called drilling machine

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INTRODUCTION

Underground Drilling

Change operation System

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‘Swedish Method’

1970’s

And nowadays

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Types of Drilling Machines

NOT ALL THE TUNNELS ARE

SAME

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JACK LEGGED

Pneumatic operation

Known as ‘jack hammer’

Works compressive air

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Single Boom jumbo

Cross sections up to 20m²

used small project

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Twin Boom Jumbo

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Twin Boom Jumbo

Cross section between 45 to 180m²

Accurate and fast drilling and moderate scale

High productivity

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.

UTB SERIES

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UTB Series

360° boom rollover

Semi-automated

Positioning

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SPEED

IS EVERYTHING

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Three Boom Jumbo

Cross sections up to 180m²

Longivity

High frequency

Lock-to-target

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PRODUCTIVITY

Ground condition

Rockdrill output

Drilling comsumable

Operator skill

Maintenance practice

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AUTOMATION Computer control system

Used laser effectively

Measure While Drill (MWD)

Mine Map Navigation (MMN)

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ELEMINATED

NAVIGATION

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How to Make Boom Selection?

Use for what,where?

Cross section area of boom

Boom lenght and skill

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IN CONCLUSION

We must pay attention for machine selection as,

we and

is valuable from others.

MONEY TIME

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REFERENCES

• Face Drilling, 2nd edition. Atlas Copco Rock

Drills

• mining.cat.com

• Automation for Quality Drilling, Face Drilling,

Atlas Copco

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