Q159
In which project was basalt rock tunneling a significant challenge?
A.
Mumbai Metro Line 3
AnswerB.
Shanghai Maglev Tunnel
C.
Channel Tunnel
D.
Bangkok MRT
Answer: Option A
Solution
Answer: Option A
Solution:
Mumbai Metro Line 3 had to tunnel through Deccan Trap basalt, which is hard and abrasive, requiring specialized TBM cutters and cooling systems.