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This question belongs to Geological Engineering Rock Mechanics And Rock Engineering

Rock Mechanics and Rock Engineering

?

Which rock property primarily affects the stability of a tunnel face?

A) Porosity B) Cohesion C) Unconfined compressive strength D) Fracture toughness

Answer & Solution

Correct Answer: Option D

Fracture toughness defines the ability of rock to resist crack propagation at the tunnel face, affecting stability.

Question posted by Examveda

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