中文摘要：

为找出混凝土重力坝坝基防渗帷幕深度、厚度、位置因素对防渗效果的影响规律，在渗流理论基础上借助Fluent软件用数值模拟法分析坝基渗流场．计算收敛后得出坝基稳定渗流场的等压线图、速度矢量图、压力及流速散点图，分析指出坝基帷幕防渗作用与其自身渗透性有关，帷幕深度对坝基扬压力影响较大，帷幕厚度主要影响坝基渗流量，帷幕位置只影响坝基扬压力．

英文摘要：

In order to find out the pattern of influence of different factors such as the depth, thickness, and location of the seepage prevention curtain on its impervious effect, the seepage field in concrete gravity dam foundation was analyzed with numerical simulation method by using software-Fluent based on the theory of seepage. After the solution being converged, isobaric lines, velocity vector diagrams, scatter plots of velocity and pressure in the seepage field were found. It was summarized that the impervious effect of the curtain depended on its own permeability; curtain＇s depth would have bigger effect on the uplift pressure of the dam foundation, curtain＇s ＇thickness would have the effect mainly on the seepage flow, and curtain＇s location would have the influence on the uplift pressure of the dam foundation only.