The 2009 Cologne Archive collapse was linked to:
A. Groundwater rise
B. Improper excavation near soft rock
C. TBM misalignment
D. Failure of diaphragm walls
Answer: Option D
Solution (By Examveda Team)
The collapse was caused by the failure of diaphragm walls during subway construction, allowing water and soil to enter the excavation site rapidly.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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