地下厂房洞群围岩渗流场有限元分析

The FEM Analysis of Seepage Field of Underground Plant and Its Cavities

运用固定网格结点虚流量法和排水子结构技术以排水孔开关器概念 ,对三板溪水电站地下厂房洞群围岩渗流场进行了三维仿真模拟 ,解决了由于多样性的地层结构 ,特殊的渗控措施和复杂的厂房结构而带来的诸多难题 ,成功地求解了三板溪地下厂房区的复杂渗流场。充分证明排水孔结构技术对求解精度提高的优越性。

In this paper,the author imitate 3D model of underground plant of Sanbanxi and its cavities with the method of immobile mesh & virtual flux of node. Several difficulties,caused by the variety of stratum structure, the special seepage controlling measures and the complex plant structure are solved. The complex seepage field of underground plant of Sanbanxi is computed successfully. The advantage of improving on calculation precision by draining substructure is fully certificated.