What is the main purpose of installing a collar during shaft sinking?
A. Prevent water inflow
B. Strengthen shaft bottom
C. Provide stable top for equipment
D. Reduce dust
Answer: Option C
Solution (By Examveda Team)
Shaft collar is a reinforced structure at the surface opening.The correct answer is: Provide stable top for equipmentSupports hoisting structures and prevents surface collapse.Often constructed with concrete.This Question Belongs to Mining Engineering >> Mine Development And Mining Methods
Join The Discussion