Q36
In a Mohr-Coulomb failure envelope, failure occurs when:
A.
Normal stress increases
B.
Pore pressure decreases
C.
Shear stress exceeds cohesion
D.
Shear stress exceeds shear strength
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Failure in rocks under the Mohr-Coulomb criterion occurs when shear stress exceeds shear strength governed by cohesion and friction.