盘区隔离矿柱开采方法研究与实践
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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.
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.
引文
[1] Mahdi Shabanimashcool,Charlie C,LI,et al.A numerical study of stress changes in barrier pillars and a border area in a longwall coal mine[J].International Journal of Coal Geology,2013,106(106):39-47.
[2]罗周全,管佳林,冯富康,等.盘区隔离矿柱采场结构参数数值优化[J].采矿与安全工程学报,2012,29(2):261-264.
[3]朱青凌,尚振华,刘畅,等.残留矿柱安全回采研究与工程实践[J].矿业研究与开发,2019,39(2):5-10.
[4]过江,赵岩,张为星,等.多向荷载作用下隔离矿柱采场矿壁受力分析[J].中南大学学报(自然科学版),2018,49(12):3020-3028.
[5]吴洁葵,袁梅芳,王志,等.空场人工点柱替换原生矿柱回采技术及工艺[J].金属矿山,2017(1):1-5.
[6]辛向东,陈江川,李伟明.多变空区处理协同П型矿柱回采新技术应用[J].矿业研究与开发,2018,38(11):10-12.
[7]李冬青,王李管.深井硬岩大规模开采理论与技术:冬瓜山铜矿床开采研究与实践[M].北京:冶金工业出版社,2009.
[8]郭金峰,刁心宏,张传信,等.论冬瓜山深埋铜矿床开采技术的研究[J].金属矿山,2002(1):10-12.
[9]王发芝.冬瓜山铜矿深部采场充填技术[J].矿业研究与开发,2008,28(4):4-5.
[10]陈钊锋.冬瓜山铜矿隔离矿柱回采采矿巷道稳定性与支护参数研究[D].长沙:中南大学,2013.
[11]汪令辉.微震监测系统在冬瓜山铜矿的应用[J].现代矿业,2009(12):102-103.
[12]唐礼忠.深井矿山地震活动与岩爆监测及预测研究[D].长沙:中南大学,2008.
[2]罗周全,管佳林,冯富康,等.盘区隔离矿柱采场结构参数数值优化[J].采矿与安全工程学报,2012,29(2):261-264.
[3]朱青凌,尚振华,刘畅,等.残留矿柱安全回采研究与工程实践[J].矿业研究与开发,2019,39(2):5-10.
[4]过江,赵岩,张为星,等.多向荷载作用下隔离矿柱采场矿壁受力分析[J].中南大学学报(自然科学版),2018,49(12):3020-3028.
[5]吴洁葵,袁梅芳,王志,等.空场人工点柱替换原生矿柱回采技术及工艺[J].金属矿山,2017(1):1-5.
[6]辛向东,陈江川,李伟明.多变空区处理协同П型矿柱回采新技术应用[J].矿业研究与开发,2018,38(11):10-12.
[7]李冬青,王李管.深井硬岩大规模开采理论与技术:冬瓜山铜矿床开采研究与实践[M].北京:冶金工业出版社,2009.
[8]郭金峰,刁心宏,张传信,等.论冬瓜山深埋铜矿床开采技术的研究[J].金属矿山,2002(1):10-12.
[9]王发芝.冬瓜山铜矿深部采场充填技术[J].矿业研究与开发,2008,28(4):4-5.
[10]陈钊锋.冬瓜山铜矿隔离矿柱回采采矿巷道稳定性与支护参数研究[D].长沙:中南大学,2013.
[11]汪令辉.微震监测系统在冬瓜山铜矿的应用[J].现代矿业,2009(12):102-103.
[12]唐礼忠.深井矿山地震活动与岩爆监测及预测研究[D].长沙:中南大学,2008.