露天边坡地下水渗流模拟及降水坡降研究

以伊敏露天矿三采区设计采矿为工程研究背景，采用物理模拟与数值模拟相结合的方法，分析地下水渗流规律、边坡采动渗流变形规律、及降水对边坡渗流规律影响。基于相似模拟研究了露天开采过程中地下水位渗流动态过程、坡面出水位置、渗流水力坡降特征及地下水通过断层后出现水位跃变；通过数值模拟研究了7种不同降水工况中边坡中浸润线的变化特征、地下水在断层处跃变规律、及地下水的水力坡降特征。最终，确定了矿区合理的降水位及水力坡降。

Study on groundwater seepage simulation and precipitation slope of open-pit Slope

Based on the design and mining of the third mining area of Yimin open pit mine, the seepage law of groundwater, the seepage deformation law of slope mining and the influence of precipitation on the seepage law of slope are analyzed by combining physical simulation and numerical simulation. Based on the similar simulation, the dynamic process of groundwater level seepage, the position of slope water, the characteristics of seepage hydraulic gradient and the water level jump of groundwater after passing through the fault are studied in the process of open-pit mining. The characteristics of the change of phreatic line in slope, the law of groundwater jump at the fault and the characteristics of groundwater hydraulic gradient are studied by numerical simulation. Finally, the reasonable precipitation level and hydraulic gradient are determined.