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将增量流形方法推广到岩石大变形问题。基于总体拉格朗日列式，建立了大变形分析的增量流形元的计算公式，模拟了具有节理、裂隙的岩石大变形问题，结果表明是有效的。
The incremental manifold method is extended to the large deformation of rock. Based on the general Lagrangian formula, the formula of incremental manifold element for large deformation analysis is established, and the large deformation of rock with joints and fractures is simulated. The results show that it is effective.