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通过一些典型节理化岩体模型变形破坏过程中的AE事件的定位分析和破裂面形态的研究,探讨了不连续岩体变形破坏过程的空间演化特征。结果表明:单节理岩体变形破坏的空间动态特征受节理角控制,随着节理角从小变大,岩体的变形破坏方式从AE在局部集中的突发式失稳向AE弥漫于整个节理层面的类似渐进式的破坏形式发展;失稳破裂面从简单的整体状岩─膏界面变成形态复杂的层内复合破裂面;复杂节理岩体的变形破坏受一条(组)主导构造控制,强AE事件集中发生在不连续构造交汇部位,在包含多条主构造的岩体模型中最终失稳破裂面只与最后阶段AE的位置一致。
Through the analysis of the AE events during the deformation and destruction of some typical jointed rock mass models and the study of the morphology of the fracture surface, the spatial evolution characteristics of the discontinuous rock mass deformation and failure process are discussed. The results show that the spatial dynamic characteristics of deformation and failure of single jointed rock mass are controlled by joint angles. With the joint angle becoming smaller, the deformation failure mode of rock mass permeates the AE in the locally concentrated burst instability to AE at the entire joint level. Similar to the gradual destruction of the form of development; instability rupture surface from the simple monolithic rock-paste interface into a complicated complex intra-layer composite fracture surface; the deformation and destruction of the complex jointed rock mass controlled by a (group) dominant structure, strong The AE event is concentrated at the intersection of discontinuous structures. In the rock model with multiple main structures, the final instability fracture surface is consistent with the position of the final stage AE.