某锰矿露天废石场边坡稳定性评价及高陡边坡防治  

An Evaluation of Slope Stability and Prevention of High-and-Steep-Slope in Manganese Mine Open Pit Waste Rock Field

作　　者：邹乾胜 ZOU Qiansheng(Henan First Geological and Mineral Survey Institute Co.,Ltd.,Luoyang,Henan,471023,China;Henan Ecological Environment and Exploration Geochemical Application Engineering Technology Research Center,Luoyang,Henan 471023,China)

机构地区：[1]河南省第一地质矿产调查院有限公司,河南洛阳471023 [2]河南省生态环境与勘查地球化学应用工程技术研究中心,河南洛阳471023

出　　处：《中国锰业》2024年第3期55-59,共5页China Manganese Industry

摘　　要：矿山开采工作的地质变化容易导致地质灾害的发生,进而影响周边人们的生产生活。针对锰矿露天废石场的高陡边坡问题,利用极限平衡分析法对岩土体进行物理力学参数的分析,以分析滑坡面的受力状况及边坡稳定性因素。再使用三维快速拉格朗日分析法,并结合废石场设计图纸的数值,生成三维集合建模以分析滑坡面的边坡角和堆置高度。结果显示,圆弧形滑坡面在自重和地震作用中,整体安全系数下降20.21%~20.48%,沿基底接触面滑动安全系数降低18.56%~19.75%。废石场堆置高度的不断变化和边坡临界值的计算,得出合理边坡角为29°。为高陡边坡防治的治理方案提供技术参考。Geological changes in mining work can easily cause geological disasters,which in turn affects the surrounding production and life.The study focuses on the problem of high-and-steep-slope in the manganese mine open-pit waste rock field.The limit equilibrium analysis method is used to analyze the physical and mechanical parameters of the rock and soil mass,the stress conditions of the landslide surface and the factors of slope stability.When we using the three-dimensional fast Lagrangian analysis method to combine the numerical values from the design drawings of the waste rock field,we can generates a three-dimensional set modeling to analyze the slope angle and stacking height of the landslide surface.The results show that the overall safety factor of the circular sliding slope has decreased by 20.21%-20.48%under self weight and earthquake action.The safety factor of sliding along the base contact surface has decreased by 18.56%-19.75%.The continuous variation of the stacking height of waste rock field,including the calculation of the critical value of the slope angle,results in a reasonable slope angle of 29°.It provides technical reference for the treatment plan of high and steep slope prevention and control.

关 键 词：露天废石场 极限平衡分析法 岩体性质 边坡稳定性 高陡防治 

分 类 号：TD854[矿业工程—金属矿开采]