Rainfall seepage characteristics and potential hazard control of abandoned dump slope
A certain dumping site is located near a river,and its overall height and step height are relatively high,which makes the influence of rainwater infiltration greater,posing potential hazards under rainfall conditions.Based on the stacking situation of the site and the surrounding environment,the seepage characteristics of the waste dump under rainfall conditions were studied,and the potential hazards of the waste dump slope were analyzed,then the corresponding treatment plans were proposed.The results show that with continuous rainfall,there will be a transient saturation zone on the surface of the waste dump slope and it will continue to expand to the inside of the slope.During the rainfall process,the pore water pressure of the slope increased rapidly to a positive value,then gradually stabilized,and the slope reached a saturated state.Under the influence of rainfall,the relative stability relationship of the dump slope is:slope bottom＞slope top＞mid-slope,and the potential hazard site is from+85 m platform to+170 m platform.By adding a safety platform and reducing the slope angle,the potential hazards can be effectively controlled.
dumpseepage characteristicspore water pressurehazard controlslope stability
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