Q13
Which geological technique was used in tunneling for Metro Rail projects in Delhi?
A.
Cut and cover with blasting
B.
Slurry shield Tunnel Boring Machine
AnswerC.
Open-pit excavation
D.
Jet grouting
Answer: Option B
Solution
Answer: Option B
Solution:
The slurry shield TBM was used to handle soft soils and high groundwater pressure in Delhi Metro construction. This method prevents face collapse and reduces surface settlement.