Numerical Analyses of Slope Stability Considering Grading and Seepage Prevention

The normal operation of the Yulangpei tailings reservoir is affected by landslide stability. In this paper, taking main and side slopes near dam bank ditch as an example, water–soil coupling theory applied to comprehensively evaluate reliability reservoir. Grading seepage prevention (GSP) measures suction substrate are considered, well infiltration different rainfall water levels. We numerically simulate typical three forms under conditions conduct a reliable comprehensive evaluation slopes. This study shows that analysis condition 1 indicates factor safety (FS) slope lag effect GSP can improve FS slope, but not significantly for slope. 2 weakening increases with intensity during process, while rebounds when stops. initial stability improves after measures, more sensitive changes in level. 3 overall trend displacement small decrease followed sharp increase. negatively correlated change total displacement, general slight increase After GSP, about 3% decreases 87%, 41%, 66%.