摘要
为了安全、高效地回采Lubambe铜矿倾斜中厚矿体,将分段空场法改进为平底结构纵向房柱法,沿矿体纵向在上下分段间交错布置矿房及矿柱,脉内采准工程兼作凿岩、出矿巷道。生产结果表明:平底结构纵向房柱法采切比仅为87.3 m/万t,采矿回收率72.2%,贫化率22%,综合生产能力可达1 000 t/d。此外,利用双臂凿岩台车凿上向平行中深孔,矿体厚度5 m时单排炮孔仅需3~4个,每米崩矿量达8~9 t,大块率明显降低。
To extract the inclined medium-thick orebodies safely and effectively at Lubambe Copper Mine,longitudinal room and pillar mining with flat bottom structure was derived from sub-level open stope mining.Rooms and pillars at sub-levels were arranged at a staggered way along the longitudinal direction of orebodies.The developing roadways can also be utilized as drilling and mining roadways.The application results showed that the mining-cutting ratio of the longitudinal room and pillar mining was only 8.73m/kt,the recovery rate was 72.2%,the ore dilution rate was 22%,and the production capacity reached 1000t/d.Additionally,the double-boom jumbo was introduced to drill the upward parallel medium-length boreholes.By this method,only 3-4boreholes per row were arranged when the ore thickness was 5m,and the blasted ore tonnage per meter reached 8-9t,with the large boulder rate decreased apparently.
作者
黄明清
谭伟
李兵磊
Huang Mingqing;Tan Wei;Li Binglei(College of Zijin Mining,Fuzhou University,Fuzhou 350.116,China;JCHX Mining Management Co.,Ltd.,Beijing 100070,China)
出处
《金属矿山》
CAS
北大核心
2018年第11期41-43,共3页
Metal Mine
基金
国家重点研发计划重点专项(编号:2017YFC0602900)
福建省中青年教师教育科研项目(编号:JT180061)
关键词
平底结构
纵向房柱法
交错式布置
上向平行中深孔
Flat bottom structure
Longitudinal room and pillar mining
Staggered arrangement
Upward parallel medi- um-length boreholes
