以西南某水电站为例,依据坝址区工程地质条件构建了边坡三维模型,模拟了地形地貌、岩层分级和主要地质结构面,借鉴锦屏一级等类似工程资料确定雾化雨强度和影响范围,以年均河床水位与地下水位为控制边界条件进行三维饱和非饱和降雨入渗计算。分析渗流结果表明,坡面平缓和坡脚处的压力水头明显上升,距离坝址越远雾化降雨对边坡影响越小。该方法结果合理,实用性强。 Taking a hydropower station in Southwest China as an example, a three-dimensional model of slope is constructed according to engineering geological conditions in the dam site. The terrain, rock classification and main geological structure surface are simulated. The intensity and influence of fogging rain Range, taking annual riverbed water level and groundwater level as control boundary conditions for three-dimensional saturated unsaturated rainfall infiltration calculation. Analysis of the seepage results shows that the slope is gentle and the pressure head at the foot of the slope is obviously increased. The farther the atomization rainfall from the dam site, the smaller the impact on the slope. The method is reasonable and practical.