Deformation control of local slope in the south slope of stope in Shengli East No.2 Open-pit Coal Mine
In response to the problem of double-step deformation on the west slope of the south slope landslide area of Shengli East No.2 Open-pit Mine,the article qualitatively analyzes the slope stability,selectes the typical section and establishes two-dimensional slope model.The article determines potential landslide mode using discrete element numerical simulation,calculates the slope stability based on the rigid body limit equilibrium method,and accordingly proposes a slope trimming and reshaping treatment scheme.The results show that the deformation zone's failure mode is circular sliding.The slope stability coefficient before treatment is 0.993,and it is 1.102 after the slope trimming and reshaping treatment.The local slope angle is reduced to 18°,meeting the safety reserve coefficient requirements.
soft rock slopePFC2Dstrength reduction methodshear failureplastic surgery design
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