分析了金沙江某水电站坝址区工程地质条件,确定了左岸泄洪雾化区边坡的稳定性控制边界条件及潜在滑动块体,基于泄洪雾化区地形图构建了边坡三维模型,在泄洪雾化区边坡三维饱和非饱和渗流场计算的基础上考虑了非饱和孔隙水压力对结构面强度的影响,并计算了一次典型泄洪雾化降雨过程中边坡滑体的动态安全系数。计算结果表明,该方法可为雾化区边坡渗流控制和边坡加固设计提供参考。 The engineering geological conditions of the dam site of a hydroelectric station in Jinsha River are analyzed and the stability control boundary conditions and potential sliding blocks of the slope on the left bank discharge spillway are determined. Based on the topographic maps of the spillway flood atomization area, Based on the calculation of 3D saturated and unsaturated seepage field of the atomized area slope, the influence of unsaturated pore water pressure on the strength of the structural surface is considered, and the dynamic safety factor of the slope is calculated during a typical flood discharge fogging process. The calculation results show that this method can provide reference for slope seepage control and slope reinforcement design in atomization area.