... curves, strength and failure modes under different conditions, it was found that the testing results were valid under cyclic loading and unloading tests. The experimental results also demonstrated that with the increase of the rock damage, the lateral irreversible deformation was always greater than...

... in the research of damaged zone revolution of surrounding rock in underground engineering. relation Venant body triaxial compression test irreversible deformation Upstream Oil & Gas constitutive equation underground engineering constitutive model deformation Completion Installation...