夏甸金矿隔离矿柱回采的相似材料模拟试验  

Similar materials simulation test of the isolation pillars extraction process in Xiadian Gold Mine

作　　者：王春光 吴锋 彭剑平 王航 Wang Chunguang;Wu Feng;Peng Jianping;Wang Hang(Zhaojin Mining Industry Co.,Ltd.;State Key Laboratory of High-efficient Mining and Safety of Metal Mines,Ministry of Education,University of Science and Technology Beijing;School of Civil and Environment Engineering,University of Science and Technology Beijing)

机构地区：[1]招金矿业股份有限公司 [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]北京科技大学土木与环境工程学院

出　　处：《黄金》2018年第11期30-34,共5页Gold

摘　　要：为了探究夏甸金矿隔离矿柱在回采过程中的稳定性情况,采用相似材料模拟的方法进行了研究。本次相似材料模拟选用的区域为北翼-535 m水平至-595 m水平的隔离矿柱。相似材料模拟试验结果表明:条形矿柱的最小宽度为2. 5 m,当宽度小于2. 5 m时,条形矿柱中出现明显的破坏。此外,在分步回采过程中,卸压作用前半段强于后半段。在向上回采的过程中采空区顶板、条形矿柱、崩落采矿法采场及充填采矿法采场中应力均有小幅下降。采场中总体位移量较小,对生产影响小。The stability of the isolation pillars that are being extracted in Xiadian Gold Mine is studied by simulat-ing similar materials. The area selected for the similar materials simulation is the isolation pillars in the level -535 m to -595 m in the north wing. The result of similar materials simulation test has shown that the minimum width of strip pillar is 2.5 m. When the width is less than 2.5 m, obvious damage occurs to the strip pillar. In addition, first half of pressure relief is stronger than the latter half in the stepped extraction process. In the process of upward recovery,the stress in the goal roof, strip pillars and the stopes subject to caving method and filling method has a slight decrease.The overall displacement in the stope is smaller,which has a small impact on production.

关 键 词：隔离矿柱 相似材料模拟 条形矿柱 分步回采 稳定性 

分 类 号：TD853[矿业工程—金属矿开采]