Study of influencing factors on the peak dissipation energy at physical simulation similar material of coal-rock solid-gas coupling

Abstract

Based on the study of the test specimens made with the new solid-gas coupling similar material, the variation rule of energy characteristics during the compression and rupture of rocks and the criterion to judge rock damage were obtained. The results show that during the process of uniaxial fracturing, the peak dissipation energy of the test specimen has a logarithmic relationship with the bone-glue ratio, while it has a positively correlated exponential relationship with the mass ratio of gas-barrier cementing agent. It was shown that the sensitivity of peak dissipation energy toward the mass ratio of gas-barrier cementing agent is more obvious. The research results have provided the theoretical basis for the quantified appraisal of the fracture evolution region.