摘要
针对冬瓜山铜矿盘区开采遗留大量隔离矿柱,回收率不高的问题,提出由中间厚大部位向两翼退采回收盘区矿柱的采矿方法。为保证该方法实施的安全性,对隔离矿柱开采的影响因素进行分析,并结合隔离矿柱赋存条件、采空区充填情况、盘区开采超界情况、以及现场地压监测结果,提出利用现有装备和生产条件进行连续退采,并根据底部结构采用不同的出矿运输方式。已回采隔离矿柱33.1万t,矿柱回收率达到58%,且开采过程中地压活动处于可控范围以内,实践证明这种隔离矿柱回采方法经济且安全。
Aiming at the problems that a large number of isolated pillars left over from panel mining,and the recovery rate is not high in Dongguashan Copper Mine,a mining method for recovering pillars in panel area from large and middle parts withdrawal mining to two wings was proposed.To ensure the security of the implementation of this method,the influencing factors of isolated pillars mining were analyzed.And combined with the conditions of isolation pillars occurrence,goaf filling,panel mining overrun state,and site ground pressure monitoring results,it was proposed to use existing equipment and production conditions for continuous withdrawal mining,and to adopt different mining and transportation modes according to the bottom structure.Therefore,the recovery rate of isolated pillars reached 58%,during mining process the ground pressure activity was58%,and the ground pressure activity was within the controllable range.Practice showed that this recovery method for recovering isolated pillars was economical and safe.
作者
党建东
张君
康虔
李刚
DANG Jiandong;ZHANG Jun;KANG Qian;LI Gang(Dongguashan Copper Mine,Tongling Nonferrous Metals Group Co.,Ltd,Tongling,Anhui 244031,China;Digital Mine Research Center,Central South University,Changsha,Hunan 410083,China;State Key Laboratory of Safety and Health for Metal Mines,Maanshan,Anhui 243000,China;Huawei National Engineering Research Center of High Efficient Cyclic and Utilization of Metallic Mineral Resources Co.,Ltd,Maanshan,Anhui 243000,China)
出处
《矿业研究与开发》
CAS
北大核心
2019年第7期47-50,共4页
Mining Research and Development
基金
金属矿山安全与健康国家重点实验室开放基金项目(2017-JSKSSYS-03)
关键词
盘区隔离矿柱
开采条件
开采方法
回采指标
Panel isolated pillar
Mining condition
Mining method
Recovery rate
