Which of the following best describes the Mohr-Coulomb failure criterion in rock mechanics?
Question 2
A rock mass contains numerous open joints and fractures. How would this typically affect its modulus of elasticity (E) compared to the intact rock material?
Question 3
Consider a rock sample subjected to triaxial compression. If the confining pressure is increased, what is the most likely effect on the rock's compressive strength and ductility?
Question 4
Which of the following best describes the strain-softening behavior observed in some rocks?
Question 5
A rock sample is subjected to a uniaxial compressive stress of $100 \text{ MPa}$. If its Poisson's ratio ($\nu$) is $0.25$ and its axial strain is $0.002$, what is the lateral strain ($\epsilon_L$) experienced by the rock?
