隐爆角砾岩筒内矿体开采对断层安全影响研究  

Study on the Influence of Ore Body Mining in Concealed Explosive Breccia Tube on Fault Safety

作　　者：李同鹏 杨洪玉[3] 胡崴 LI Tongpeng;YANG Hongyu;HU Wei(Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.;State Key Laboratory of Safety and Health for Metal Mine;Anhui Jinding Mining Co.,Ltd.)

机构地区：[1]中钢集团马鞍山矿山研究总院股份有限公司,安徽省马鞍山市243000 [2]金属矿山安全与健康国家重点实验室 [3]安徽省金鼎矿业股份有限公司

出　　处：《现代矿业》2022年第5期59-63,共5页Modern Mining

摘　　要：为研究隐爆角砾岩筒内的金铜矿体采动对F_(1)断层的影响,建立三维数值模型,选择FLAC^(3D)计算分析软件,拟定分段空场嗣后充填采矿法、上向水平分层充填采矿法和上向进路充填采矿法3种方案,根据不同方案提供的采场结构参数,模拟分析隐爆角砾岩筒内的金铜矿体开采后采场围岩的塑性区破坏响应。模拟分析结果表明,采用分段空场嗣后充填采矿法时,F_(1)断层塑性区贯通,连成一片,单元破坏率高,易引发断层失稳破坏;采用上向水平分层充填采矿法和上向进路充填采矿法,对F_(1)断层开采破坏较小,采场通过断层时稳定性较好,该2种采矿方法适合用于隐爆角砾岩筒内的金铜矿体开采。In order to study the influence of mining of gold and copper ore body in cryptoexplosive breccia barrel on F_(1) fault,a three-dimensional numerical model is established. FLAC^(3D) calculation and analysis software is selected to formulate three schemes: sublevel open stope subsequent filling mining method,upward horizontal layered filling mining method and upward drift filling mining method. According to the stope structural parameters provided by different schemes,the plastic zone failure response of stope surrounding rock after mining of gold and copper ore body in cryptoexplosive breccia barrel is simulated and analyzed. The simulation results show that when the sublevel open stope subsequent filling mining method is adopted,the plastic zone of F_(1) fault is connected and connected into one piece,the unit failure rate is high,and it is easy to cause fault instability and failure. The upward horizontal layered filling mining method and upward drift filling mining method are adopted,which have less damage to the mining of F_(1)fault and good stability when the stope passes through the fault. These two mining methods are suitable for the mining of gold and copper ore body in concealed explosive breccia tube.

关 键 词：断层 隐爆角砾岩筒 方案模拟 塑性破坏 

分 类 号：TD853.34[矿业工程—金属矿开采]