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In the case of the Metro tunnel beneath the Hooghly River...

This question belongs to Geological Engineering Case Studies And Applied Geological Engineering Projects
Case Studies and Applied Geological Engineering Projects
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In the case of the Metro tunnel beneath the Hooghly River, which technique was used to avoid water ingress?

Answer & Solution
Correct Answer: Option C
A slurry shield Tunnel Boring Machine was used under the Hooghly River to balance water pressure and prevent ingress.
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