无压渗流渗出面确定的等效结点流量法

结合溢出点的特性及初流量法求解具有自由面渗流的优越性，以可能溢出点等效结点流量控制为外循环，非饱和区高斯点初流量为内循环，以渗出面只有流量流出，没有流量流入原则进行渗出面判定，编制了相应三维渗流分析程序并应用于某除险加固土石坝渗流分析中，结果表明：渗出面的确定方法可行．土石坝防渗加固效果明显，墙体不会产生渗透破坏．

Equivalent Nodal Flow Method Used to Determine Overflow Surface in Seepage with Free Surface

Taking some characteristics of spill point and the superiority of initial flow method to solve free surface seepage into account, seepage analysis is based on the outside iteration of equivalent node flow on the possible spill points and internal iteration of initial flow on Gaussian point in unsaturated zone. Overflow surface is distinguished by the principle that the flow of overflow points is just outflow, not inflow. The corresponding 3D seepage analysis program is formulated and used to seepage analysis of an earth-rock dam reinforcement. The results show that the method to determine overflow surface is feasible the reinforcement effect of the earth-rock dam is obvious and the seepage damage won＇t take place.