Which shaft sinking technique involves freezing water-bearing ground before excavation?
A. Blind shaft boring
B. Raise boring
C. Artificial ground freezing
D. Slurry wall method
Answer: Option C
Solution (By Examveda Team)
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.This Question Belongs to Mining Engineering >> Mine Development And Mining Methods
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