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What is the main concern when driving headings in swelling ground...

This question belongs to Mining Engineering Mine Development And Mining Methods
Mine Development and Mining Methods
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What is the main concern when driving headings in swelling ground?

Answer & Solution
Correct Answer: Option C
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.
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