Study on treatment of collapse area of north slope in Baiyinhua No.1 Open-pit Coal Mine
In order to solve the impact of the collapse area of the north working slope in Baiyinhua No.1 Open-pit Coal Mine on safety production,the article determines physical and mechanical parameters of the weak layer based on the landslide reverse analysis method,and analyzes the stability of the slope in the north working slope of Baiyinhua No.1 Open-pit Coal Mine by using the two-dimensional rigid body limit equilibrium method,presents two treatment plans,namely overall flat expansion and horizontal flat optimization,to optimize the slope shape.The results show that all the slope stability coefficients can satisfy the safety reserve coefficient after optimized design.In the collapse area of the north working slope of Baiyinhua No.1 Open-pit Coal Mine,the stripping amount is 184.12 Mt by using the overall flat expansion optimization design,and 131.10 Mt by using the horizontal flat expansion optimization design.The slope control measures provide technical support for quick clearing of collapse area and reduce the impact of slope collapse on open-pit production.
reverse analysis of landslideslope treatmentstability analysislevel by level optimizationlimit equilibrium
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