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FLAC3D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。
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.
出处
《化工矿物与加工》
CAS
北大核心
2014年第11期34-36,41,共4页
Industrial Minerals & Processing
基金
国家自然科学基金重点项目(51034005)
教育部新世纪优秀人才支持计划资助(NCET-13-1022)
863科技计划"大型露天矿规模化开采新工艺研究"(2012AA062004)
中央高校基本科研业务费专项资金资助(2011QNA13)
关键词
露天矿
复合边坡
稳定性
强度折减法
surface mine
complicated slope
stability
strength reduction method
