Studies on the effect of depth on physical and mechanical parameters of rock play an important role in understanding the deformation and failure of rock at great depths.
The analytical conclusions are of great significance for the design of protective structures against the explosion-induced hazards and mine safety protection from outburst and explosion.
It is indicated that the total number of mining induced cracks increases with the increasing of advanced lengths of mining face.
The exploitation of coal bed methane or coal gas is one of the most effective solutionsof the problem of coal gas hazard.
The establishment of spatial correlation among scattering acoustic emission (AE) signals has great potential applied into a deep analysis of triaxial compression behaviors by the AE monitoring technology.
Investigating the stress drop of abutment pressure is the key to a deep quantitative analysis of the discontinuous stress redistribution under mining.
完整岩石单轴抗压强度是传统和普适Hoek-Brown（HB）强度准则中的关键参数，其与岩石软硬程度和岩石破碎程度具有强关联性，而理想的或理论值严格意义上并不等同于单轴测试值。
Combined with the traditional description by T2 spectrum, the NMRI description provides an auxiliary illustration on spatial distribution of water in various pores.
The results verify the effectiveness and sensitivity of the cluster damage model in describing triaxial compression behaviors, which provides a new modeling method to extract more valuable information from the correlated AE signals.
The results show that cluster modeling based on the critical cube is effective and has criticality in both topology and geometry, as well as the triaxial behavior.