用各向异性三维渗流模型模拟非均匀土质地基渗流流动 ,考虑饱和—非饱和渗流以及降雨因素的影响 ,实现了三维空间渗出面的迭代求解和对通过任意断面的漏水量的精确计算。实际模拟了复杂三维渗流流动 ,根据通过坝轴线断面的漏水量来评价防渗墙范围和厚度对防渗效果的影响 ,并对防渗墙的施工方案与工程造价进行了论证 By using the anisotropic seepage model to simulate the seepage flow of heterogeneous soil foundation, considering the influence of saturated-unsaturated seepage and rainfall, the iterative solution of the seepage surface in three-dimensional space and the accurate calculation of water leakage through any section are realized. According to the leakage of cross section through the axis of the dam, the influence of seepage-proof wall area and thickness on the seepage prevention effect was evaluated. The construction scheme and construction cost of the seepage-proof wall were also demonstrated