倾斜极薄矿脉开采工艺研究  

Study on Mining Technology of Inclined Extremely Thin Vein

作　　者：夏建波[1] 林友[1] XIA Jianbo;LIN You(Faculty of Metallurgy and Mining Engineering,Kunming Metallurgy College,Kunming 650033,China)

机构地区：[1]昆明冶金高等专科学校冶金与矿业学院

出　　处：《昆明冶金高等专科学校学报》2019年第5期10-15,共6页Journal of Kunming Metallurgy College

基　　金：云南省高等职业教育科学研究项目:矿山安全评价模拟系统开发(GZYB201404);全国有色金属教学指导委员会教学改革项目:高职金属与非金属矿开采技术专业教学标准修(制)订开发研究(YS2017006)

摘　　要：针对桂花铜矿伪倾斜工作面分采全面法存在的问题,进行开采工艺优化改造。将矿块式开采调整为连续回采,通过改变工作面伪倾斜方向、调整切底和落矿之间的开采顺序、优化炮孔布置以改变爆破指向等措施,使采场人工劳动强度大幅降低、抛废作业时间大量缩短、采矿工效得到较大提升、采矿直接成本大幅降低、采矿损失及贫化率也相应降低。改进方案在桂花铜矿进行了实践,千吨采切比减少了23.86 m/kt,综合回收率提高了9.3%,采矿工效提高了4.16 t/工·班,生产能力增加了52 t/d,采矿直接成本减少了27.6元/t,改进方案具有较高的实用价值与经济效益。In view of the problems existing in the original pseudo-inclined working face separately comprehensive mining method in Guihua Copper Mine,the block mining is adjusted to continuous mining.By changing the pseudo-inclined direction of the working face,adjusting the mining sequence of the underground and falling ore,optimizing the layout of the blasting hole to change the blasting direction and other measures,the artificial labor intensity of the stope is greatly reduced,and the waste stone discharging time is reduced.Mining efficiency has been greatly improved,mining direct costs have been greatly reduced,mining losses and dilution rates have also been reduced accordingly.The improved scheme has been put into practice in Guihua Copper Mine.The mining-cutting ratio of 1000 tons has been reduced by 23.86 m/kt,the comprehensive recovery has been increased by 9.3%,the mining efficiency has been increased by 4.16 t/shift,the production capacity has been increased by 52 t/d,and the direct cost of mining has been reduced by 27.6 yuan/t.The improved scheme has higher practical value and economic benefits.

关 键 词：倾斜极薄矿体 采矿方法 分采全面法 伪倾斜工作面 

分 类 号：TD853.21[矿业工程—金属矿开采]