大结构参数无底柱分段崩落法结构参数优化研究  

Optimization research on structural parameters in non-pillar sublevel caving method with large structural parameters

作　　者：孙东东 张治强[1,2] 常帅 路增祥[1,2] 赵野 

机构地区：[1]辽宁科技大学,辽宁鞍山114051 [2]辽宁省金属矿产资源高效综合利用工程技术研究中心,辽宁鞍山114051 [3]抚顺罕王傲牛矿业股份有限公司,辽宁抚顺113001

出　　处：《中国矿业》2018年第1期105-108,共4页China Mining Magazine

基　　金："十二五"国家科技支撑计划项目资助(编号:2013BAB02B08);辽宁省金属矿产资源高效综合利用工程技术研究中心开放课题资助(编号:USTLKFGJ201606);辽宁科技大学研究生教育改革与科技创新创业项目资助(编号:LKDYC201615)

摘　　要：毛公铁矿采用大结构参数无底柱分段崩落法开采,生产过程中矿石贫损率较高,回收率低于50%。针对此问题,本文借助崩落体形态与放出体形态的匹配关系分析了崩矿步距对矿石回采指标的影响,并通过实验室物理模拟实验,研究了崩矿步距为一排炮孔和崩矿步距为两排炮孔条件下的纯矿石放出量、矿石回收率及混岩率等回采指标,得出崩矿步距为两排炮孔条件下的纯矿石放出量、矿石回收率及混岩率均好于崩矿步距为一排炮孔条件下的纯矿石放出量、矿石回收率及混岩率。本研究对于矿山实际生产有指导意义。The non-pillar sublevel caving method with large structural parameters used in Mao Gong Iron Mine is of high rate of dilution and loss,and the ore recovery rate is less than 50%.Aiming at this problem,this paper analyzes the influence of the caving step on the mining index by means of the matching relationship between the shape of caved ore body and the drawn-out ore body,then through the physical simulation experiment in laboratory,the mining index such as the volume of pure ore drawing,ore recovery ratio and rock mixing ratio are studied under different caving step.The results show that the mining index under caving step of two row of blasthole is better than that under caving step of one row of blasthole.The research has guided significance for production of the mine.

关 键 词：无底柱分段崩落法 崩矿步距 大结构参数 矿石回收率 

分 类 号：TD853.36[矿业工程—金属矿开采]