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Which factor most affects the stability of underground openings

This question belongs to Mining Engineering Mine Development And Mining Methods
Mine Development and Mining Methods
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Which factor most affects the stability of underground openings?

Answer & Solution
Correct Answer: Option B
Rock strength is a primary determinant of how stable an opening will be.The correct answer is: Rock strengthStronger rocks can support wider spans and deeper development.Measured through RQD and UCS tests.
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