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中文摘要：
为了研究露天矿复合边坡稳定性,揭示边坡滑移机理,基于强度折减法及FLAC^3D对复合边坡进行数值模拟,通过稳定性分析揭示排土场位置对复合边坡稳定性的影响规律及破坏形式。对某露天矿复合边坡进行研究,结果表明：随着排土场与采场上部境界距离的减小,复合边坡稳定系数加速增长,所压边帮的塑性区逐渐扩张。数值模拟自动寻找边坡最危险区域和滑面破坏形式,为排土场采场-复合边坡稳定性的预测及防治提供了理论依据。
英文摘要：
In order to study the stability of complicated slope in surface mines,as well as to reveal the slope sliding mechanism,Strength Reduction Method was proposed as a basis to conduct the numerical simulation of complicated slopes through FLAC^3 D.Consequently,the influencing rule of slope stability by the position of outer dump and its failure model were clarified.With the study case of some complicated slope in surface mines,the results illustrate that the factor of safety for complicated slope grows dramatically as the distance between outer dump and stope decreases.Besides,the plastic zone in the side slope expands gradually.In the numerical simulation,the critical zone and failure model of sliding surface were searched and confirmed automatically,which further serve the scientific advice for the stability of complicated slopes.
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