黄麦岭磷矿胶结充填开采配比试验及数值模拟  

Numerical Simulation and Proportion Test of the Cemented Filling Mining in Huangmailing Phosphate Mine

作　　者：姜金洁 张建华[1] 尹东升[2] 胡晓倩 周勇 

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]大冶有色金属集团控股有限公司,湖北黄石435004 [3]江西省水电工程局,江西南昌330000 [4]五矿二十三冶建设集团,湖南长沙410116

出　　处：《金属矿山》2016年第4期36-41,共6页Metal Mine

摘　　要：黄麦岭磷矿露天转地下所面临着怎样选取合理充填材料、充填料配比以及合理选取矿房、矿柱宽度的问题,为此进行了充填体的配比试验,同时结合得到的充填体物理力学参数,运用FLAC3D软件对矿块进行了数值模拟,验证了实际充填体强度要求,判断了不同矿块参数情况下矿房的稳定性和安全性问题。研究表明：黄麦岭尾矿库尾砂具有良好的充填特性,试验得到的不同配比充填体在28 d养护临期的强度值在0.18~2.48 MPa之间;不同充填体维持自稳性的极限宽度在18~25 m之间;矿柱采用灰砂比为1∶6的全尾砂胶结充填方案,合理宽度为15 m,矿房采用水砂充填,合理宽度为15 m。In transition from open pit to underground mining of Huangmailing Phosphate Mine,such issues as selecting reasonable filling materials,material proportion,and reasonable width of room and pillar should be faced with. For these,the proportion experiments of backfilling were made. Combined with the physical and mechanical parameters of the filling body,the numerical simulation on ore block was carried out by the FLAC3 Dto verify the actual strength of filling body. By this method,the stability and safety problems of ore block with different parameters were estimated. Studies showed： tailings in Huangmeiling tailing dam has good filling property. The 28 d strength of filling body in different proportion varies from 0. 18 to 2. 48 MPa; The limited width of different filling body to maintain the stability is between 18 and 25 m; The pillar adopted the full-tailings cemented filling with cement-sand ratio of 1 ∶ 6,while the room adopts the water and sand back-fill,and both has the reasonable widths at 15 m.

关 键 词：尾砂胶结充填 充填体强度 采场参数 数值模拟 

分 类 号：TD853.34[矿业工程—金属矿开采]