Study on the Influence of Rainfall on Slope Stability of Open-pit Mines
The effect of rainfall will lead to the deterioration of slope stability,which will affect the safety of stope production.Based on the limit equilibrium method and strength reduction method,GeoStudio and FLAC3D software are used to analyze the slope stability of the whole slope under rainfall.The results of limit equilibrium method show that the minimum value of slope stability coefficient under the action of rain-fall is 1.78,which is greater than the allowable safety factor of 1.20.The results of strength reduction method show that the safety coefficient of the slope profile can meet the minimum safety coefficient required by the code.The effect of precipitation on the stability of the open-pit slope is less,the slope stability is good,and the selection of stope slope parameters is feasible,which provides a basis for slope protection and treatment of similar mines.
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