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What is the main geological concern in constructing underground metros in...

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 the main geological concern in constructing underground metros in coastal cities?

Answer & Solution
Correct Answer: Option C
Saline water ingress is a key issue in coastal tunneling, as seen in projects like Mumbai Metro and Chennai Metro. Proper sealing and concrete protection are essential.
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