Q138
What is the main geological concern in constructing underground metros in coastal cities?
A.
Slope instability
B.
Soil corrosion
C.
Saline water ingress
AnswerD.
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.