According to the basic principles of the seepage field,the stress-fluid coupling analysis,the governing equation and the mathematical model,based on general finite difference method FLAC software analysis platform,the stability with the consideration of seepage effect of 1st and 2nd stage slope of Xudonggou Mine of Anqian Mining Company of slope stability a-nalysis is studied. The results indicate that the quartz chlorite schist along the dip layers is controlling factors of influence of the slope stability. Because of the poor stability of the quartz chlorite schist,there is still instability problem in the design of 2nd stage slope. The migmatite at the beginning of production has well stability, but when the quartz chlorite schist outcropped, slope instability problem still arise. Therefore,it is recommended that local adjustment of 2nd stage slope in order to ensure the safety production of mine.%根据渗流场以及渗流场与应力场耦合分析的基本原理、基本控制方程和数学模型,以通用有限差分法软件FLAC为分析平台,对鞍千矿业许东沟采场一期与二期境界边坡进行了考虑渗流影响的稳定性分析.流固耦合模拟分析表明顺倾层状结构的绿泥石英片岩是影响边坡稳定性的控制性因素,稳定性较差.绿泥石英片岩边坡失稳问题在二期境界扩建设计中依然存在,区别是生产初期形成的混合岩边坡稳定性较好,但当绿泥石英片岩开始揭露后边坡失稳问题依然会出现,并且牵引上部混合岩体出现整体滑动的风险很大.建议对二期扩建的境界边坡设计进行局部调整,以保证矿山的安全生产.
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