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Geological Engineering · Q138

Case Studies and Applied Geological Engineering Projects

Engineering and GATE · Geological Engineering · question 138

Q138

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

A.
Slope instability
B.
Soil corrosion
C.
Saline water ingress
Answer
D.
Mud flow

Answer: Option C

Solution

Answer: Option C
Solution:
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.