岩石脆性破坏导致的各种现象可以分为两类:①与物理力学参数和结构特征改变有关,表现为岩石本身变得破碎,承载力降低,变形速率增大,模量变小,渗透率增大,波速参数与电阻率值突变;②与能量释放及物理场参数变化有关,体现在声发射信号激增,电磁辐射强度增加,红外辐射加大.试验和理论分析表明:单轴条件下岩石破裂前临界特征点所对应的应力和岩石峰值应力比值约在70%-80%之间.论文通过分析得出,岩石脆性破坏的各种信息与岩石微破裂发展存在特定的关联性,利用综合信息源可以很好的进行脆性破坏临界点的识别. The various phenomena caused by the brittle failure of rock can be divided into two types: (1) It is related to the change of physical and mechanical parameters and structural features. The rock itself is fragmented, the bearing capacity decreases, the deformation rate increases, the modulus decreases, and the permeability increases Large, wave velocity parameters and resistivity value changes; ② and energy release and changes in the physical field parameters, reflected in the acoustic emission signal surge, electromagnetic radiation intensity increases, infrared radiation increases.Experiments and theoretical analysis show that: uniaxial rock rupture The ratio of the stress corresponding to the front critical feature point and the peak stress of the rock is about 70% -80% .Through the analysis, the paper shows that there is a specific correlation between the various information about the brittle failure of rock and the development of rock micro-rupture. By using the comprehensive information The source can be very good for the identification of the critical point of brittle failure.