Mine Development And Mining Methods - Study Mode

[#106] Which term refers to a horizontal working driven parallel and close to the ore body but not in ore?
Correct Answer

(C) Exploration gallery

Explanation

Solution: Exploration gallery is driven near the ore zone for observation and sampling.The correct answer is: Exploration galleryUsed to determine ore geometry, grade, and structure.Not a production-level drift.

[#107] In which mining method is "room and pillar" primarily used?
Correct Answer

(A) Salt and potash mining

Explanation

Solution: Room and pillar is used in flat-bedded deposits like salt, coal, and potash.The correct answer is: Salt and potash miningRooms are mined, and pillars are left to support the roof.Not suitable for steep or irregular ore bodies.

[#108] Which mining method uses downward retreat of the ore body while filling the voids with waste or tailings?
Correct Answer

(A) Cut and Fill

Explanation

Solution: Cut and Fill is an underground mining method using backfilling after each ore slice is removed.The correct answer is: Cut and FillEffective for irregular ore bodies and unstable ground.Allows high selectivity and safety.

[#109] Which shaft sinking technique involves freezing water-bearing ground before excavation?
Correct Answer

(C) Artificial ground freezing

Explanation

Solution: Artificial ground freezing stabilizes wet, loose ground during shaft sinking.The correct answer is: Artificial ground freezingCirculates chilled brine or nitrogen through pipes to freeze surrounding soil.Minimizes water inflow and supports excavation.

[#110] Which equipment is commonly used in soft rock underground mining?
Correct Answer

(A) Roadheader

Explanation

Solution: Roadheader is used in soft to medium-hard rocks for continuous excavation.The correct answer is: RoadheaderIt uses a rotating cutting head and conveyor for spoil removal.Efficient in coal and evaporite mines.