In the Gotthard Base Tunnel, what major geological obstacle was encountered?
A. Aquifers in limestone
B. High geothermal gradients
C. Weak unconsolidated sand
D. Reactive clay minerals
Answer: Option B
Solution (By Examveda Team)
The Gotthard Base Tunnel in Switzerland, the world�s longest rail tunnel, faced high geothermal gradients exceeding 40�C, requiring special cooling and ventilation systems.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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