Q157
What is the primary reason for backfilling in underground mining?
A.
Prevent water seepage
B.
Increase haul distance
C.
Provide ground support
AnswerD.
Improve ventilation
Answer: Option C
Solution
Answer: Option C
Solution:
Backfilling involves placing material in mined-out voids.The correct answer is: Provide ground supportStabilizes surrounding rock and allows nearby mining.May also reduce surface subsidence.