Study On The Seepage Control Schemes Of The Dagang Mountain High Arch Dam And Underground Powerhouse

Seepage analysis and control technique become more and more important in the hydraulic structure design. Dagang Mountain hydraulic power station is located in the Shimian county, Sichuan province, and it is one of the large scale hydraulic power stations exploited in the near future. Dagang Mountain hydraulic power station adopts concrete arch dam combined with underground powerhouse as the layout of hydroscheme scheme, and the normal water level is 1130m, the maximum height of dam is 210m, the reservoir capacity is about 7.42×108m3, and the installed capacity is 2600MW. In the dam site region, there are different kinds of dike and fault, and there are five groups of blatt. Dominated by the above factors, the hydrogeological condition of the dam site region is complicated, and the permeability is of the zonal and anisotropic attributes. Thus, only by means of the seepage fields calculation and analysis, the characteristics of the native seepage field , and the changes of the construction or operating period seepage fields with different anti-seepage and drainage measures, could be reflected veritably and exactly, which becomes extremely important to the seepage control schemes decision making of Dagang Mountain hydraulic power station.In order to quantitatively assess and optimize the seepage control measures and schemes of different seepage control measures and schemes in the construction and operating periods, the ANSYS software and 3D FEM method are used to study the seepage control effect, and the main content and features of this paper are as follows:1. According to the engineering geological and hydrogeological condition, the...