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Raise Boring Machine Operation

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Questions and Answers

What is the primary purpose of the protective canopy in the Alimak raise development system?

To ventilate the excavation area

To shield the personnel from blasting damage (correct)

To provide a stable platform for drilling

To protect the drill deck from rockfall

In the Alimak raise development system, what is the sequence of the production steps?

Drill, charge, blast, ventilate, scale (correct)

Scale, charge, drill, blast, ventilate

Ventilate, scale, drill, charge, blast

Scale, drill, charge, blast, ventilate

What is the purpose of the monorail in the Alimak raise development system?

To remove the broken ore from the excavation (correct)

To provide a stable platform for blasting

To transport personnel and equipment

To install the drill deck on top of the raise climber

What is an adit used for in underground hard rock mining?

To access orebodies located near or above the access floor Signup and view all the answers

What is the purpose of the drive-toothed section on the monorail in the Alimak raise development system?

To drive the monorail into the excavation Signup and view all the answers

What is the primary purpose of the Alimak climber in the Alimak raise development system?

To protect the personnel during blasting Signup and view all the answers

What is the purpose of the air/water blast in the Alimak raise development system?

To dislodge loose rock from the freshly blasted face Signup and view all the answers

In the Alimak raise development system, what is the purpose of the charging-up step?

To charge the holes with explosives Signup and view all the answers

What is the advantage of the Alimak system in terms of post-blast ventilation?

It provides a powerful and efficient ventilation process Signup and view all the answers

What is the typical location of an adit in underground hard rock mining?

Near or above the access floor Signup and view all the answers