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Mine Development and Mining Methods MCQs Questions & Answers | Mining Engineering

Learn and practice multiple-choice questions (MCQs) with answers related to Mine Development and Mining Methods. These resources are available for mining engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Mine Development and Mining Methods chapter is particularly important for students studying mining engineering. Page-5 section-2

Each section contains 100 MCQs on Mine Development and Mining Methods .
41
What is "overbreak" in development blasting?
Discuss
Answer & Solution
Answer: Option C
Solution:
Overbreak is unintended excavation beyond the desired perimeter.The correct answer is: Rock breaking beyond design limitCauses extra ground support cost and volume loss.Controlled with precise blasting.
42
Which support system uses wire mesh and shotcrete together?
Discuss
Answer & Solution
Answer: Option B
Solution:
Hybrid support combines surface reinforcement and internal support.The correct answer is: Hybrid supportMesh holds loose blocks while shotcrete provides surface sealing.Used in weak or fractured ground.
43
In block caving, what triggers the caving process?
Discuss
Answer & Solution
Answer: Option D
Solution:
Block caving depends on undercutting the base of the ore body.The correct answer is: Controlled excavation at baseOnce support is removed, the overlying rock caves under gravity.Requires strong geotechnical planning.
44
What does RMR stand for in rock mechanics?
Discuss
Answer & Solution
Answer: Option C
Solution:
RMR (Rock Mass Rating) classifies rock quality for engineering purposes.The correct answer is: Rock Mass RatingConsiders UCS, RQD, joint spacing, condition, and groundwater.Helps in support design and stability analysis.
45
Which of the following is an economic advantage of room and pillar mining?
Discuss
Answer & Solution
Answer: Option C
Solution:
Room and pillar allows for flexible layout and safe conditions.The correct answer is: Simultaneous development and productionPillars are left to support the roof, while ore is extracted in rooms.Efficient in flat-lying deposits.
46
Which term describes the process of cleaning and leveling a stope floor after blasting?
Discuss
Answer & Solution
Answer: Option A
Solution:
Mucking refers to removing blasted rock (muck) from the working face.The correct answer is: MuckingDone using LHDs, scrapers, or manual tools.Prepares area for next cycle.
47
What is the function of a refuge bay in an underground mine?
Discuss
Answer & Solution
Answer: Option C
Solution:
Refuge bays are built for miner safety in emergencies like fires or gas leaks.The correct answer is: Safe shelter during emergenciesEquipped with air, water, communication, and supplies.Required by mine safety regulations.
48
Which mining method is least suitable for soft and unstable ground?
Discuss
Answer & Solution
Answer: Option C
Solution:
Sublevel stoping requires strong surrounding rock to maintain stope integrity.The correct answer is: Sublevel stopingIn soft ground, collapse risk is high.Cut and fill would be more appropriate.
49
Which underground opening is driven perpendicular to the ore body to reach it?
Discuss
Answer & Solution
Answer: Option C
Solution:
Crosscut is a horizontal tunnel driven across strata to reach the ore.The correct answer is: CrosscutIt connects the shaft or ramp to the ore body.Essential in layout planning.
50
What is the primary benefit of mechanized raise mining?
Discuss
Answer & Solution
Answer: Option C
Solution:
Mechanized raise mining like raise boring or Alimak reduces manual work.The correct answer is: Faster and safer excavationMinimizes worker exposure to unsupported ground.Higher precision and speed than conventional methods.