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Abstract FEM is a numerical simulation method commonly used in geotechnical engineering. But for the large-scale problem with complex strata and large-scale region in geotechnical engineering，the calculation precision is not good enough. Refinement of finite element mesh causes element number increase greatly；and single PC computing capacity will be insufficient to accomplish the huge computing task. Based on the domain decomposition and precondition conjugate gradient methods，a ParallelGeoFEM3D program is developed and implemented on cow cluster of workstation(COW). The construction sequence of the tail-tunnel excavation of Shuibuya Project is simulated with 100×104 elements and 20 excavation steps successfully showing the ParallelGeoFEM3Dcan analyze construction options fast and accurately.
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Received: 16 October 2004
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