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论文类型：期刊论文

发表时间：2015-09-01

发表刊物：SCIENCE CHINA-TECHNOLOGICAL SCIENCES

收录刊物：SCIE、EI、CSCD、Scopus

卷号：58

期号：9,SI

页面范围：1567-1574

ISSN号：1674-7321

关键字：rock failure process; finite element method; discontinuous deformation analysis (DDA); crack propagation; slope stability

摘要：A discontinuous deformation and displacement (DDD) analysis method is proposed for modelling the rock failure process. This method combines the rock failure process analysis (RFPA) method (based on finite element method) and discontinuous deformation analysis (DDA) method. RFPA is used to simulate crack initiation, propagation and coalescence processes of rock during the small deformation state. The DDA method is used to simulate the movement of blocks created by the multiple cracks modelled by the RFPA. The newly developed DDD method is particularly suitable for modelling both crack propagation and block movement during the rock failure process because of the natural and convenient coupling of continuous and discontinuous deformation analyses. The proposed method has been used to simulate crack initiation, propagation and coalescence within a slope as well as the block movement during the landslide process. Numerical modelling results indicate that the proposed DDD method can automatically simulate crack propagation and block movement during the rock failure process without degrading accuracy.