无底部结构下向中深孔逐孔微差起爆技术研究及应用  

Research and application of bottomless structure downward medium-long hole hole-by-hole micro-differential detonation technology

作　　者：李延龙 申燕元 Li Yanlong;Shen Yanyuan(NFC Africa Mining PLC;Yiyang Geo-environmental Monitoring Station)

机构地区：[1]中色非洲矿业有限责任公司 [2]益阳市地质环境监测站

出　　处：《黄金》2022年第7期40-45,共6页Gold

摘　　要：谦比希铜矿东南矿区设计年产矿石量330万t,采用自动化出矿系统,为完全发挥自动化出矿设备效率,要求出矿通道底板平整。不平整的底板造成出矿效率低、设备损耗大、出矿成本高等问题,这些问题在矿山的上分层进路采矿法、下分层下向中深孔采矿法的采矿工艺中显得尤为突出。为解决上述问题,通过前期不断的探索研究,借鉴露天矿的逐孔微差起爆技术,在下分层下向中深孔采矿法中采用逐孔微差起爆工艺,且获得成功。由于在下分层爆破前预先对采场顶板及两帮进行了支护,保证了后续作业工序人员和设备安全。此工艺的成功应用为矿山自动化系统提供了保障,为安全、高效完成目标打下了基础。The designed capacity of southeast mining district,Chambishi Copper Mine,is 3 million t/a.Automation ore-drawing system is adopted.In order to make full use of the automated ore-drawing equipment,it is required that the ore-drawing channels have flat floors.The uneven bottom structure causes problems such as low ore-drawing efficiency,high equipment loss and high ore-drawing cost,especially in mining processes such as upper slicing approach mining and lower slicing downward medium-long hole mining in mines.In order to solve these problems,through continuous early-stage exploration,the lower slicing downward medium-long hole mining method adopted hole-by-hole micro-differential referring to the technology used in open-pit mines and the application was successful.The top plate and both sides of the stope are supported in advance before the lower slicing blasting,which guaranteed the security of the staff and equipment during subsequent operation.The successful application of the process guarantees mine automation system and lays the foundation for safe and efficient completion of objectives.

关 键 词：自动化 出矿 底部结构 中深孔 微差起爆 

分 类 号：TD235[矿业工程—矿井建设]