In the Delhi Metro project, what was the main geotechnical challenge in Old Delhi?
A. Hard rock excavation
B. Sandy soils and groundwater table
C. Seismic fault crossings
D. High elevation variation
Answer: Option B
Solution (By Examveda Team)
Tunneling beneath Old Delhi involved dealing with loose alluvial soils and a high groundwater table, necessitating closed-face TBMs.Which geotechnical failure occurred in the 1963 Vajont Dam disaster in Italy?
A. Overtopping of dam
B. Foundation failure
C. Landslide into reservoir
D. Earthquake-induced cracking
What was the main geological issue in the Panama Canal expansion project?
A. Lava flow
B. Marine sediment instability
C. Hard rock tunneling
D. Seismic liquefaction
In the case of the Leaning Tower of Pisa, what caused the leaning?
A. Uneven settlement due to clayey soil
B. Earthquake damage
C. Poor construction material
D. Tectonic movement
Which engineering technique stabilized the Hong Kong slopes after landslide disasters?
A. Tunneling
B. Shotcreting and soil nailing
C. Earth reinforcement
D. Floating raft foundation
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