基于FLAC数值模拟的边坡渗流应力耦合分析

发布时间：2018-11-17 10:47

【摘要】：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。
[Abstract]:According to the basic principle of seepage field and the coupling analysis of seepage field and stress field, the basic control equation and mathematical model are presented. The general finite difference method software FLAC is used as the analysis platform. The stability analysis of the first and second phase boundary slope of Xudong Gou mining site in Anshan thousand mining industry considering the influence of seepage is carried out. The fluid-solid coupling simulation analysis shows that the green-mud quartz schist with bedding structure is the controlling factor affecting the slope stability and the stability is poor. The instability problem of green mud quartz schist slope still exists in the second stage boundary extension design. The difference is that the mixed rock slope formed in the early stage of production is more stable, but when chlorite schist begins to reveal, the slope instability problem will still appear. And there is a great risk of the whole sliding of the traction upper mixed rock mass. It is suggested that local adjustment of boundary slope design should be carried out to ensure the safety of mine production.
【作者单位】：辽宁科技大学矿业工程学院;太原市建筑设计研究院;辽宁时代万恒控股集团有限公司;
【基金】：国家自然科学基金项目(编号:51174208) 辽宁省金属矿产资源高效采选及利用工程技术研究中心开放课题(编号:USTLKE201402)
【分类号】：TD854.6;TD32

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