Examveda

In which project was basalt rock tunneling a significant challenge?

A. Mumbai Metro Line 3

B. Shanghai Maglev Tunnel

C. Channel Tunnel

D. Bangkok MRT

Answer: Option A

Solution (By Examveda Team)

Mumbai Metro Line 3 had to tunnel through Deccan Trap basalt, which is hard and abrasive, requiring specialized TBM cutters and cooling systems.

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