Slope stability analysis and monitoring scheme of end slope mining area in Pingshuo East Open-pit Mine
In order to analyze the slope stability in the end slope mining area of Pingshuo East Open-pit Coal Mine,the article selectes three typical slope profiles,DB-01,DB-02 and DB-03 as the research objects,and selectes the reasonable slope stability safety reserve coefficients and physical and mechanical parameters of the rock and soil.Based on the principles of limit equilibrium and finite initial strength reduction,we conduct slope stability analysis and determine that the stability coefficients of each slope at the mining boundary meet the safety factor specification requirements and present the measures for monitoring and controlling the slopes of the end slope coal mining area.The results show that the stability coefficients of the end slope of Pingshuo East Open-pit Coal Mine are all above 1.2 after reaching the boundary,and the end slope is in a stable state,which can be further implemented by the end face coal mining machine.The article determines that the height and width of the mining tunnel for coal seam 4 are 5 m and 3.3 m,and the width of the coal pillar is 5 m,and the height and width of the mining tunnel for 9 coal seams are 5 m and 3.3 m,with a coal pillar width of 6 m.The stability of the mining area of the end slope shearer reaches 1.1 or above,meeting the safety reserve requirements.
end slope miningslope stabilitylimit equilibrium methodnumerical simulationslope monitoring
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