佛子矿采空区声发射监测点优化及稳定性评价  

Optimum Layout of AE Network and Stability Assessment for the Goaf in Fuzi Mine

作　　者：马雄忠[1,2] 王文杰[1] 钱立[1] 叶鹏[1] 熊伟红[2] 

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081 [2]金川集团股份有限公司龙首矿,甘肃金昌市737100

出　　处：《矿业研究与开发》2014年第5期47-51,共5页Mining Research and Development

基　　金：国家自然科学基金资助项目(50804036);武汉市晨光计划资助项目(201050231045);湖北省教育厅重点项目(D20111107)

摘　　要：为确保佛子矿104号矿体生产安全,将声发射监测技术运用于该矿进行采空区监测。通过数值软件FLAC3D对104号矿体进行模拟分析,找出应力集中、位移较大、安全系数小的区段布设声发射监测点,实现声发射网络的优化布设。针对传统声发射分析方法抗干扰能力不强,预报不准确等问题,引入声发射累计差量指标,并用该指标对104号矿体采空区进行失稳预测,预测结果与实际情况相一致。The acoustic emission monitoring technology was applied to ensure the production safety of 104#orebody in Fozi mine.By simulation analysis of the 104#orebody with FLAC3 D,the AE monitoring networks were located in regions with concentrated stress,large displacement and small safety factor,which realized optimum layout of AE networks.The traditional AE analysis method had poor capacity of resisting disturbance and inaccurate prediction.Regarding these disadvantages,the accumulative residual quantity indicator of AE was recommended to forecast the goaf instability of 104#ore body.The prediction result was consistent with the practical reality.

关 键 词：声发射 数值模拟 累计差量指标 空区稳定性 

分 类 号：TD76[矿业工程—矿井通风与安全]