Mine Development And Mining Methods - Study Mode

[#126] What is the primary purpose of grouting in mine development?
Correct Answer

(B) Water seepage control

Explanation

Solution: Grouting involves injecting cement or chemical mixtures into fractures.The correct answer is: Water seepage controlUsed to seal cracks in rock to prevent water ingress.Also strengthens weak zones before excavation.

[#127] What is "face" in mining terminology?
Correct Answer

(C) Working surface being mined

Explanation

Solution: Face is the exposed area of rock where excavation occurs.The correct answer is: Working surface being mined Can be vertical or inclined depending on orientation.Regularly drilled, blasted, and advanced.

[#128] Which type of ventilation system uses both intake and exhaust shafts?
Correct Answer

(C) Mechanical ventilation

Explanation

Solution: Mechanical ventilation uses fans to circulate air through shafts.The correct answer is: Mechanical ventilationEnsures controlled airflow, critical in deep and gassy mines.Supports both fresh air intake and foul air exhaust.

[#129] Which equipment is most suitable for narrow vein underground mining?
Correct Answer

(C) Airleg drill

Explanation

Solution: Airleg drills are lightweight and maneuverable.The correct answer is: Airleg drillIdeal for narrow spaces where larger equipment cannot reach.Commonly used in hand-held drilling operations.

[#130] What does "cut" refer to in a cut-and-fill mining method?
Correct Answer

(B) The ore removed in one pass

Explanation

Solution: Cut is the horizontal ore segment extracted during a mining cycle.The correct answer is: The ore removed in one passOnce the cut is mined, the void is filled before mining above.This maintains stability.