地下矿山采场群稳定性分析及其控制技术  

Stopes stability in underground mine and its control technique

作　　者：徐文彬[1] 宋卫东[2] 曹帅[2] 江国建[3] 吴锋[3] 姜磊[3] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]北京科技大学土木与环境工程学院,北京100083 [3]招远市黄金集团有限公司大尹格庄金矿,山东招远265414

出　　处：《采矿与安全工程学报》2015年第4期658-664,共7页Journal of Mining & Safety Engineering

基　　金：国家科技支撑计划课题项目(2009BAB48B02);国家重点基础研究发展计划(973)项目(2013CB227903)

摘　　要：为了研究地下采场群稳定性问题,基于Voronoi图法理论,建立了不规则矿柱稳定性评价方法。以大尹格庄金矿为工程背景,在调查、分析采场矿柱、顶板失稳破坏模式的基础上,总结得到影响矿柱稳定性的主要因素;并借助正交极差分析方法对矿柱稳定性影响因素敏感性进行对比分析,得到了矿柱稳定性影响因素敏感性主次顺序。对-496 m水平各采场矿柱的稳定性现状进行评价,结果表明:1-2#,2-6#,3-1#,3-2#以及4-2#矿柱安全系数皆低于1.0;6203采场整体稳定性差,极易发生矿柱连续破坏事故。最后,提出了控制采场群稳定性支护对策。现场实践证明,采场顶板发生冒落、矿柱出现开裂或片帮等现象急剧减少,采场整体稳定性得到显著提高。To study the stability of stopes in an underground mine, an approach to analyze the stability of irregular ore pillar was established on the basis of Voronoi diagram. Taking Dayin＇gezhuang Gold Mine as engineering background, the collapse modes of ore pillars and roofs were investigated and analyzed, and the main factors influencing pillar stability was put forward. In addition, orthogonal polar difference analysis was used to investigate the sensitivity of influencing factors, and the affecting sequence was listed from the most to minor. The stability status of ore pillars at-496 m level were evaluated, and the results show that the safety coefficients of No.1-2, No.2-6, No.3-1, No.3-2 and No.4-2 ore pillars are all below 1.0. The stability of No.6203 Stope is the worst, and the pillars are extremely vulnerable to failure contiguously. Finally, support control measures were taken to ensure the stope stability. It is proved that the occurrence of roof caving and ore pillar fracturing is rapidly decreased, and the whole safety of mining stop is significantly improved.

关 键 词：Voronoi图法 地下采场群 稳定性 控制技术 

分 类 号：TD325[矿业工程—矿井建设]