Examveda

In the Gotthard Base Tunnel, what was the major geotechnical concern?

A. Gas explosions

B. Glacial till

C. Water ingress through fractured rock

D. Weak soil layers

Answer: Option C

Solution (By Examveda Team)

The Gotthard Base Tunnel encountered significant water ingress through fractured gneiss and schist, requiring high-capacity dewatering systems and grouting.

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