两河口水电站地下厂房渗流控制布置方案研究

It introduced the design of the seepage prevention and drainage system of the underground powerhouse, according to the engineering geology and the hydrological condition of the underground powerhouse, then establishing 3-D finite element refined model. Analyzed the seepage characteristics of underground powerhouse and the features of the seepage prevention and drainage system. It discussed the effect of the changes of the rock permeability and drain hole distance on the seepage field. Finally, the analysis shows that this Seepage control scheme is feasible and suggests that the hole distance is 3m.