Q161
What is the main characteristic of sublevel caving?
A.
Unsupported stopes
B.
Caving of overlying waste
AnswerC.
Backfilled stopes
D.
Ore removal before stope completion
Answer: Option B
Solution
Answer: Option B
Solution:
Sublevel caving allows ore to be extracted as overlying waste caves in.The correct answer is: Caving of overlying wasteOre is blasted from sublevels, and cave propagates upward.Requires good caveability and ground control.