岩石微破裂损伤演化诱致突变的数值模拟

Infinite element simulation of catastrophe induced by evolution of rock microfracturing damage

基于岩石变形过程中损伤局域化现象，根据岩石材料随机性的特点，通过二维网络系统损伤演化的有限元数值模拟发现：岩石微破裂在损伤演化过程中显示出从均匀随机的无序逐渐向局域化的有序转化特征，不论微破裂如何演化，最终都诱致岩石网络系统产生突变破裂现象。用岩石微破裂与声发射具有一致性的假设，模拟出岩石破裂过程中声发射空间分布的规律。

Based on the phenomena of damage localization in rock deformation, the infinite element simulation on damage evolution of two-dimensional network system shows that the stochastic disorder of rock microfracturing progressively develops into localized order in damage evolution into macrofacturing . The time sequence and spacial distribution of acoustic emission generated by rock failure are also simulated by using the hypothesis of the accordance between rock microfracturing and acoustic emission.