摘要
结合洪屏抽水蓄能电站,提出了一种适用于模拟复杂地下洞室群、密集排水孔幕和各种混合坝型的渗流场三维整体建模技术。首先通过计算机自动平面解码和结点对接技术完成超单元网格的生成,再利用超单元网格自动剖分和排水孔二次剖分技术精细模拟密集排水孔幕等渗控措施,实现了复杂地质条件和边界条件下抽水蓄能电站整体三维渗流有限元模型的自动生成,解决了独立模型边界不协调等一系列问题,为类似工程渗控优化前处理提供一种新的思路。
Taking Hongping Pumped Storage Power Station project as a study case, the techniques of 3D FEM modeling are presented which can simulate the overall seepage field of underground powerhouse caverns, densely distributed drainage holes and various mixed type of dams. Firstly, the super-element meshes are generated through computer automatic plane decoding scheme and node docking technology, and then the seepage-control measures such as densely distributed drainage holes are precisely simulated by using the techniques of automatic division of super-element meshes and secondary division of drainage holes. The overall 3D seepage FEM model for pumped-storage power station with complex geological conditions and boundary conditions can be automatically generated by using these techniques and the problems of uncoordinated boundary between independent models can also be solved. These techniques provide a new way to the pre-treatment of seepage control optimization of similar projects.
出处
《水力发电》
北大核心
2013年第7期20-23,共4页
Water Power
关键词
渗流场
三维模型
超单元网格
二次剖分技术
洪屏抽水蓄能电站
seepage field
3D model
super-element mesh
secondary division technique
Hongping Pumped Storage Power Station
