为分析降雨工况下,渗透力对粗粒土高路堤边坡塑性区分布以及安全系数变化规律的影响,依托现场工程实例,以粗粒土骨架为研究对象,采用geo-studio软件中的seep模块计算边坡降雨过程中及降雨停止后水位线、基质吸力、渗流梯度的变化规律;利用FLAC3D内置的fish语言将渗流计算结果导入到FLAC3D中;综合考虑水位线、基质吸力变化,分析了渗透力变化对粗粒土高路堤边坡安全系数以及塑性区分布规律的影响。数值计算结果表明:降雨影响水位线、基质吸力、渗流梯度在边坡空间上的分布;降雨过程中水位线逐渐由坡脚抬升并向粗粒土高路堤边坡内部扩展,降雨停止后坡脚处水位线下降较快且路堤中心水位线高于初始状态水位线高度;水位线抬升过程中基质吸力逐渐消散,降雨停止后基质吸力恢复较缓慢;降雨初期坡脚处x方向渗流梯度逐渐由正值转为负值且负值分布的区域逐渐扩大;随降雨历时增加边坡塑性区由坡脚不断向边坡内部逐渐延伸,降雨停止后边坡塑性区主要发生在坡脚处;降雨0~24 h内边坡安全系数呈逐渐增大的趋势,降雨24~72 h内安全系数下降较快并达到最小值,降雨停止后安全系数逐渐恢复,但安全系数恢复过程具有一定滞后性并且恢复后的数值小于初始值。 In order to analyze the influence of seepage force on the plastic zone distribution and safety factor variation of high grained soil embankment under rainfall conditions, relying on field engineering examples, the coarse-grained soil framework was taken as the research object and geo-studio software was used to seep The module calculates the variation rule of water level, matrix suction and seepage gradient during the process of rainfall and rainfall, and the result of seepage flow is imported into FLAC3D by using the fish language built in FLAC3D. Considering the changes of water level and matrix suction, Influence of Force Variation on Safety Coefficient and Distribution of Plasticity Zone of High Granite Soil High Embankment Slope. The numerical results show that rainfall affects the spatial distribution of water level, matric suction and seepage gradient in the slope. During the rainfall, the water level line is gradually lifted by the slope foot and extends to the inside of the slope of the coarse-grained soil embankment. After the rainfall stops, The water level at the foot of the embankment dropped rapidly and the water level at the embankment center was higher than that of the initial water level. The matrix suction gradually dissipated during the water level rise, and the matric suction recovered slowly after the rainfall stopped. The gradient of x- The area where the value turns negative and the negative value distribution gradually expands. With the increase of rainfall duration, the plastic zone of slope gradually extends from the slope foot to the slope interior, and the plastic zone of slope mainly occurs at the slope foot after the rainfall stops. The rainfall is 0-24 h, the safety factor of the inner slope tends to increase gradually. The safety factor decreases rapidly and reaches the minimum within 24-72 h after rainfall. The safety factor gradually restores after the rainfall stops, but the recovery process of the safety factor has a certain lag. The value is smaller than the initial value.