两河口水电站地下厂房渗流控制布置方案研究

Scheme of Seepage Control of Underground Powerhouse of Lianghekou Hydropower Station

介绍两河口水电站地下厂房区的防渗排水系统布置。根据厂房区的工程地质和水文地质条件,建立三维有限元计算模型。分析了初步设计方案地下厂房区的渗流场特性以及防渗排水系统的特点,探讨了岩体的渗透性和排水孔间距变化对渗流场的影响。分析表明,该渗流控制方案是可行的,并建议幕后排水孔距为3m。

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, and 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 holes distance on the seepage field. Finally, the analysis shows that this seepage control scheme is feasible and suggests that the holes distance is 3m.