What is the main concern when driving headings in swelling ground?
A. High ore loss
B. Air leakage
C. Ground pressure and convergence
D. Equipment breakdown
Answer: Option C
Solution (By Examveda Team)
Swelling ground expands upon exposure to air or water.The correct answer is: Ground pressure and convergenceThis can squeeze supports and close tunnels.Requires strong supports and regular re-bolting.This Question Belongs to Mining Engineering >> Mine Development And Mining Methods
Join The Discussion