The regional geologic structure is complex. The rock mass is mainly composed of Jurassic sandrock and conglomerate.
其坝址区区域地质构造复杂，分布侏罗系中统河湖相沉积的厚层砂岩。
Accordingly, a technique for automatic hexahedron mesh of rock-mass with complex structure was realized using multiply mapping mesh.
在此基础上，利用多重映射网格，实现了复杂构造岩体六面体网格剖分；
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