Q22
What was the major challenge in constructing Metro tunnels beneath heritage structures in Kolkata?
A.
Seismicity
B.
Ground vibration control
AnswerC.
Hard rock tunneling
D.
Tunnel boring in permafrost
Answer: Option B
Solution
Answer: Option B
Solution:
Vibration control was essential to protect Kolkata�s heritage structures. Special TBMs and real-time monitoring systems were used to minimize ground movements.