某铁锌多金属矿复杂采空区群稳定性分析  

Stability Analysis of Complicated Multilayer Goafs in an Iron-Zinc Polymetallic Deposit

作　　者：叶光祥 张树标[1] 解联库[2] 王柳[1] 

机构地区：[1]赣州有色冶金研究所,江西赣州341000 [2]北京矿冶研究总院,北京100160

出　　处：《中国钨业》2016年第5期25-30,共6页China Tungsten Industry

摘　　要：某铁锌多金属矿采用无底柱浅孔留矿法开采,形成了大量采空区,给生产生活带来严重安全隐患。为回收矿区残矿及深部资源,需进行现状条件下复杂采空区群稳定性分析。研究通过安全系数法对采场矿柱进行了力学稳定性分析,并通过数值模拟方法对采空区群进行了整体稳定性分析。结果显示:现状条件下,矿柱受压,顶板受拉,应力集中现象明显;地表移动、变形较小,采空区稳定性良好;分析结果与矿区现状吻合。分析结果表明这两种采空区群稳定性分析方法在该矿区是可行的,同时可为矿区下一步安全生产提供科学依据。The mined-out area originated from the application of non-pillar shallow hole shrinkage method in an Iron-Zinc Polymetallic Deposit left large amount of goafs,which results in serious security potential problems.Stability analysis of complicated multilayer goafs was conducted for the recovery of remnant ore and deep resources in the mine.A method based on safety factor method was used to analyze the mechanical stability of stope pillar by analyzing the global stability of complicated multilayer goafs on the basis of numerical simulation.The results showed that stress concentration was quite significant for both pillar compression and roof tension.In addition,the ground movement and deformation were rather slight,which showed that the mined-out area was stable.The results were consistent with the status quo of the mining area.

关 键 词：矿柱 采空区 安全系数法 数值模拟 稳定性分析 

分 类 号：TD79[矿业工程—矿井通风与安全]