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中文摘要：
为揭示地鼓产生的原因及其对边坡变形破坏机理与稳定性的影响,结合白音华一号露天煤矿东帮工程实例,在分析边坡工程地质特征的基础上,应用极限平衡理论并通过反分析法确定了2-#煤顶板弱层抗剪强度,评价了地鼓区边坡稳定;应用FLAC3D数值模拟软件对优化后的边坡进行了数值模拟研究。结果表明：2-#煤顶板弱层及地鼓是控制边坡稳定的决定性因素;地鼓区滑坡模式为剪切圆弧-弱层-地鼓裂缝相结合的组合滑动;选定安全储备系数为1.1,5-6剖面现状边坡满足安全储备要求;1-4剖面现状边坡不满足安全储备要求;1-4剖面原设计边坡均不满足安全储备要求;经削坡优化治理不稳定边坡,优化后1剖面整体边坡角为22°,2-4剖面为24°。该研究可为白音华一号露天矿东帮边坡治理提供指导,为类似条件下露天矿安全生产提供借鉴。
英文摘要：
To reveal the cause and the effects for the slope deformation failure mechanism and stability of the ground swelling,combining with the Baiyinhua No.1 open-pit coal mine of the east working slope engineering practice,according to the limit equilibrium theory,the shear strength parameters of the 2-# coal roof weak layer is determined by using inversed analysis and the slope stability in the plunking-up floor area is evaluated on the basis of slope engineering geology.The numerical simulation of the optimized slope is simulated by Flac3D software,the study indicates that weak layer of the 2-# coal seam and ground swelling are the decisive factors to control the stability of the slope.The slope slide model of the plunking-up floor area is a combined sliding of shear arc-weak layer-ground swelling crack.Selecting security reserve coefficient is 1.1,the status quo slope of the 5-6 profile is to meet the requirements of saftey,and the status quo of the 1-4 profile is not satisfied with the security requirements.The original design slope of the 1-4 profile is not steady.Unstable slope is optimized and gived treatment by cutting slope,the overall slope angle of No.1 profile is 22° and No.2-4 profile is 24° after optimizing.Research can provide guidance for the eastern slope of Baiyinhua Surface Mine in treatment,for the safe production of similar open-pit mine has a certain reference value.
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