The Niagara Tunnel Project encountered which geological hazard?
A. Gas pockets
B. Loose moraine
C. Fault gouge
D. Karst cavities
Answer: Option D
Solution (By Examveda Team)
Engineers faced karst features (cavities in limestone) which posed water ingress risks. These were sealed using pre-injection grouting and real-time monitoring.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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