Dump Slope Stability Analysis And Safety Evaluation

The security problem of dump is very important for the operation and management ofmine,during the entire production period and a long period of time after it is closed.Once thedump disaster, will bring great losses to the mine and the surrounding environment.So theanalysis of dump slope stability, and to evaluate its safety is of great significance.This paper first introduces the basic situation of Zhangjiazhuang dump, then use thelimit equilibrium method, FLAC numerical simulation, the BP neural network to analyze theaccumulation body5dump slope stability,the conclusion is consistent: the southeast slope(1-1’) and the south side of the slope (2-2’) normal under the rain, earthquake, slope instabilityin the downstream side; loess beam (5-5’) is stable under normal conditions, but in the rain,earthquakes and groundwater level elevation of sliding body is in an unstable state; on thewest side of the slope (3-3’) and the north slope (4-4’) is in a stable state.In addition, throughthe FLAC3D software can find the plastic zone, the critical slip surface and the potentialsliding surface.Finally, with the results of the analysis of slope stability,make safety evaluationof Zhangjiazhuang dump.Divided into5units to analysis,finally decided thatZhangjiazhuang dump grade disease library,and puts forward some correspondingcountermeasures.