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为了分析岩石材料的非均质性对其破坏演化的影响,根据元胞自动机理论,从能量的角度建立了一种能够从细观层次上对岩石破坏演化进行模拟的物理元胞自动机模型(Mh-PCA模型),模型引用的Weibull随机分布函数对材料的非均质性进行描述.运用该模型,对m分别为1,5,10,15四种不同均质度材料的破坏模式及其破坏过程中的声发射现象进行了模拟分析.结果表明:材料的非均质性对其破坏有重要的影响,均质度越高,破坏过程中的分支裂纹越少,声发射也越集中.物理元胞自动机理论为岩石的破坏研究提供了一种新的研究思路.
In order to analyze the effect of heterogeneity of rock on its failure evolution, a cellular automata model based on cellular automaton theory is established from the perspective of energy to simulate the evolution of rock failure at the mesoscopic level (Mh-PCA model) and the Weibull stochastic distribution function quoted by the model are used to describe the heterogeneity of the material.Using this model, the failure modes of four different homogeneous materials with m, 1, 5, 10 and 15 respectively The results show that the heterogeneity of material has an important influence on its destruction. The higher the homogeneity is, the less the branch cracks are in the process of damage and the more the acoustic emission is concentrated The theory of physical cellular automaton provides a new research idea for the study of rock damage.