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Geological Engineering · Q48

Rock Mechanics and Rock Engineering

Engineering and GATE · Geological Engineering · question 48

Q48

What is the main failure mode in columnar basalt rock slopes?

A.
Planar failure
B.
Wedge failure
C.
Toppling failure
Answer
D.
Flow failure

Answer: Option C

Solution

Answer: Option C
Solution:
Toppling failure is common in vertical or steeply inclined columnar basalt formations where blocks rotate forward due to gravity and insufficient lateral support.