高阶段嗣后胶结充填法矿柱与充填体动态稳定性研究  

Study on Dynamic Stability of Mine Pillar and Filling Body in High-stage Subsequent Cemented Filling Method

作　　者：余昕 熊朝辉 宋卫东[1,2] 楚立申 谭玉叶 YU Xin;XIONG Zhaohui;SONG Weidong;CHU Lishen;TAN Yuye(School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing,Beijing 100083,China;WISC0 Resources Group Daye Iron Mining Co.,Ltd.,Huangshi,Hubei 435006,China)

机构地区：[1]北京科技大学土木与资源工程学院,北京100083 [2]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083 [3]武钢资源集团大冶铁矿有限公司,湖北黄石市435006

出　　处：《矿业研究与开发》2022年第4期26-31,共6页Mining Research and Development

基　　金：国家自然科学基金项目(52004019)。

摘　　要：针对某大型地下矿山高阶段嗣后胶结充填法的矿块结构参数优化分析难题,建立试验采场并采用CAD、3DMine、FLAC;等软件,开展数值模拟分析,获得开采过程中试验采场的地压变化规律,得出胶结充填体可维护采场稳定的结论。然后对采场开采过程和充填过程进行原位地压监测,再采用采空区三维扫描技术进行损贫指标计算分析。研究结果表明,优化后的采场损失率为14.03%,贫化率为8.63%,验证了加大矿块宽度的可行性,另外,还指出应在矿柱受损严重部位和底部结构适当位置加强支护。Aiming at the problem of analysis on the optimization of block structure parameters of high-stage subsequent cemented filling method in a large underground mine, the test stope was established and the numerical simulation analysis was carried out by using CAD, 3D Mine, FLAC;and other softwares. The variation law of ground pressure in the test stope in the mining process was obtained, and it was concluded that the cemented filling body can maintain the stability of the stope. Then the in-situ ground pressure monitoring in stope mining process and filling process was carried out, and the three-dimensional scanning technology of goaf was used to calculate and analyze the loss and dilution index. The results show that the optimized ore loss rate is 14.03%, and the dilution rate is 8.63%, which verifies the feasibility of increasing the width of the ore block. Inaddition, it is suggested that the support should be strengthened in the severely damaged part of the pillar and the appropriate position of the bottom structure.

关 键 词：原位地压监测 数值模拟 高阶段嗣后胶结充填法 矿块宽度 

分 类 号：TD853[矿业工程—金属矿开采]