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What is a common rock type involved in tunneling hazards due...

This question belongs to Geological Engineering Case Studies And Applied Geological Engineering Projects
Case Studies and Applied Geological Engineering Projects
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What is a common rock type involved in tunneling hazards due to swelling and squeezing?

Answer & Solution
Correct Answer: Option C
Shales, particularly clay-rich ones, can swell and squeeze under pressure when wet, causing tunnel deformation.
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