分段分条中深孔回采工艺在锦丰金矿的应用  

Application of sectioned and stripped medium long hole recovery process in Jinfeng Gold Mine

作　　者：程文文 侯俊 闵忠鹏 Cheng Wenwen;Hou Jun;Min Zhongpeng(Changchun Gold Research Institute Co. ,Ltd.)

机构地区：[1]长春黄金研究院有限公司

出　　处：《黄金》2019年第5期42-46,共5页Gold

基　　金：国家重点研发计划项目(2016YFC0600707)

摘　　要：针对锦丰金矿软弱破碎岩体原中深孔回采过程中存在的采矿损失贫化大、作业安全性差等问题,提出采用分段分条中深孔回采工艺,并开展了现场工业试验。通过采用中深孔一次成井、凿岩爆破参数优化等技术取得了较好的试验效果,生产能力提高到375 t/d,采矿损失率降低为9.2%,矿石贫化率为10.3%,采矿损失贫化指标改善明显,对国内外类似条件的矿山开采有着指导意义。The mining loss is big and the operation safety is poor when the previous medium long hole recovery process was used in Jinfeng Gold Mine to mine the fragile and broken rock mass.So,the paper proposes to use sectioned and stripped medium long hole recovery process and carries out field industrial tests.Good experimental effect is achieved by applying shaft-sinking-by-single-medium-long-hole-blasting technique and drilling blasting parameters optimization.The operation capacity is increased to 375 t/d,the mining loss rate is reduced to 9.2 %,ore dilution rate is 10.3 %.The mining loss and dilution are greatly improved.The research has guiding significance to mines with similar conditions at home and abroad.

关 键 词：软破岩体 分段分条 中深孔 一次成井 爆破参数 

分 类 号：TD853[矿业工程—金属矿开采]