大范围隐患区下不规则残留矿体整体崩落回采技术  

The Block Caving Mining of Irregular Residual Ores in a Wide Range of Potential Accident Area

作　　者：陈何[1] 王湖鑫[1] 杨伟忠[2] 罗先伟[2] 

机构地区：[1]北京矿冶研究总院 [2]广西华锡集团股份有限公司

出　　处：《金属矿山》2013年第2期36-38,共3页Metal Mine

基　　金："十一五"国家科技支撑计划项目(编号:2008BAB32B02)

摘　　要：铜坑矿92号矿体位于大范围火区隐患区下,开采条件复杂。基于多层矿体开采顶板围岩崩落特性与规律,制定了残矿回采合理的顺序。采用束状孔大参数布孔,凿岩硐室布置成巷道的形式,采场高分层落矿和厚大尺寸揭顶崩落。工业试验生产能力2 237 t/d,贫化率13.5%,损失率9%。The mining conditions in No. 92 orebody of Tongkeng Mine are complicaled with a wide range of potential fire accident area. Based on the characteristics and law of roof caving in multilayer orebody mining, a reasonable mining sequence for residual ore is developed. The block caving mining technology is characterized by bundle-holes with large param- eters, the drilling chamber arranged into tunnel, and high-layer stoping and large and thick roof-exposing earing as well. In industrial tests,the production capacity reaches 2 237t/d with the dilution rate of 13.5% and the loss rate of 9%.

关 键 词：残矿 回采 束状孔 整体崩落 

分 类 号：TD823.9[矿业工程—煤矿开采]