矿山排土场稳定性精细化计算要点探析  

Analysis on the Key Points of Fine Calculation of Mine Dump Stability

作　　者：夏禄清 万道春 李得 XIA Luqing;WAN Daochun;LI De(Design and Research Institute of Mining Co.,Ltd of Pangang Group)

机构地区：[1]攀钢集团矿业有限公司设计研究院,四川省攀枝花市617063

出　　处：《现代矿业》2023年第4期78-80,共3页Modern Mining

摘　　要：为避免矿山排土场稳定性计算结果发生偏差而对排土场稳定性产生误判,基于多个一、二级排土场稳定性研究成果,以具体计算与现场实际结合的方法,明确了排土场基底岩土层和排土物料物理力学参数精准获取的途径,提出了排土场单台阶上-中-下三带分层结构建模和表层浸润深度内以饱和层纳入计算的理念。通过实例计算显示,将单台阶概化成三带分层结构模型分别赋值计算的稳定性系数降低约2%,将排土场表层10 m深度范围设定为暂态饱和层并赋饱和物料物理力学指标计算的稳定性系数降低约6%,两者同时考虑时稳定性系数降低约8%,反映了排土场稳定性系数真实状况,说明矿山排土场稳定性精细化计算是可实现的。In order to avoid the misjudgment of the stability of the mine dump due to the deviation of the calculation results of the stability of the mine dump,based on the research results of the stability of mul tiple primary and secondary dumps,the method of combining specific calculation with on-site practice is used to clarify the accurate acquisition of the physical and mechanical parameters of the basement rock and soil layers and dump materials in the dump.The idea of modeling the upper-middle-lower three-zone lay ered structure of the single step of the dump and incorporating the saturated layer into the calculation within the surface infiltration depth is proposed.The example calculation shows that the stability coefficient calcu lated by the single-step generalized three-zone layered structure model is reduced by about 2%.The stabili ty coefficient calculated by setting the 10 m depth range of the surface layer of the dump as the transient satu rated layer and assigning the physical and mechanical indexes of the saturated material is reduced by about 6%.When both are considered,the stability coefficient is reduced by about 8%.It reflects the real situation of the stability coefficient of the dump,indicating that the fine calculation of the stability of the mine dump is achievable.

关 键 词：矿山排土场 三带分层结构 浸润深度 暂态饱和层 精细化计算 

分 类 号：TD804[矿业工程—矿山开采]