应用物理模型和三维非连续变形分析方法分析楔形体破坏

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Abstract The failure of a block or wedge of rock in a discontinuous rock mass has been analyzed by many researchers, mainly based on the limit equilibrium approach. A review of existing limit equilibrium analysis methods shows some limitations. To address these limitations, physical models have been built to study wedge failure systematically. In addition, the physical models have been analyzed by three-dimensional discontinuous deformation analysis (3-D DDA). The results show that physical modeling and 3-D DDA give the same behavior in all cases, including a case involving torsional sliding. Moreover, 3-D DDA results agree well with physical modeling results in terms of the time history of block movement. This shows that the 3-D DDA developed can potentially be used as a general stability analysis of a wedge because it considers dynamic equilibrium and general failure modes including rotational ones.

Received: 07 April 2003

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https://rockmech.whrsm.ac.cn/EN/ OR https://rockmech.whrsm.ac.cn/EN/Y2003/V22/IS1/2268

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