焦家金矿下向进路充填采矿法人工假顶优化设计及应用  

Design and application of artificial roof in underhand cut and fill mining method in Jiaojia Gold Mine

作　　者：李湘洋 宋卫东 杨勇[3] 何国强 曹帅 Li Xiangyang;Song Weidong;Yang Yong;He Guoqiang;Cao Shuai(School of Civil and Resource Engineering,University of Science and Technology Beijing;State Key Laboratory of High-efficient Mining and Safety of Metal Mines,Ministry of Education,University of Science and Technology Beijing;Jiaojia Gold Mine,Shandong Gold Group Co.,Ltd.)

机构地区：[1]北京科技大学土木与资源工程学院 [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 [3]山东黄金矿业(莱州)有限公司焦家金矿

出　　处：《黄金》2020年第1期30-33,共4页Gold

基　　金：国家自然科学青年基金(51804017);博士后基金面上项目(2018M631341)

摘　　要：针对焦家金矿北翼矿体下向进路充填采矿法人工假顶失稳的问题,在现场调研的基础上分析了人工假顶失效原因,并提出了人工假顶优化设计方案。将"田"字形布置的进路改为"品"字形布置,采用吊筋连接相邻进路人工假顶,增设竖筋,充分利用胶结充填人工假顶强度,提高了人工假顶的稳定性。现场工业应用取得了较好的效果,采矿成本降低了18. 88元/t。该人工假顶优化设计施工方案为焦家金矿北翼矿体安全高效回采提供指导,对类似矿山人工假顶构筑具有一定的参考价值。In light of the unstable artificial roof failure in the process of underhand cut and fill at the north wing ore bodies of Jiaojia Gold Mine,the cause for the artificial roof failure is analyzed based on field survey and the optimized design is put forward. The "田" layout is changed to "品" layout. Adjacent artificial roofs are connected by hanging bars. Vertical bars are added. The cemented filling artificial roof strength is fully utilized and artificial roof stability. In-situ industrial application has achieved good outcome and mining cost is reduced by 18. 88 yuan/t. The artificial roof optimization design construction plan provides guidance for safe and efficient extraction of the north wing ore bodies in Jiaojia Gold Mine and can be used as reference for artificial roof construction in similar mines.

关 键 词：人工假顶 下向进路充填采矿法 胶结充填 进路布置 稳定性 

分 类 号：TD853[矿业工程—金属矿开采]