By the extended DDA method, the failure process of a tunnel in Japan is simulated.
的扩展dda方法，在日本隧道的破坏过程进行了模拟。
Abstract Based on three-dimensional DDA method, a simple three-dimension model was proposed to analyze rockbolting and the corresponding algorithm and formulas were given.
摘要： 提出了三维非连续变形分析方法中锚杆的简化模型，给出了相应的算法和公式。
An approach for modeling rock crack propagation using discontinuous deformation analysis (DDA) method is presented.
提出一种用非连续变形分析方法模拟岩石裂纹扩展的方法。
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