蚕庄金矿深部采场稳定性数值模拟研究
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摘要
随着开采深度越来越大,蚕庄金矿上庄矿区深部地压显现现象日趋严重,开采过程中顶板及两帮岩石垮落失稳现象频繁发生,甚至出现岩爆现象,严重制约矿山生产。为了保证安全生产,利用数值模拟技术,以深部7336及7337两个大跨度相邻采场为例,对开采过程中的稳定性进行模拟分析。通过研究发现,在单层开采过程中,两个采场的顶板中部区域为应力及塑性区集中区域,要注意支护;在多分层开采中,下盘断层带附近应力集中现象明显,为重点关注区域。
With the increasing depth of mining,the phenomenon of deep ground pressure in Shangzhuang mining area of Canzhuang Gold Mine is becoming more and more serious.Rock collapse and instability occur frequently in the roof and two sides during the mining process,and even rock burst occurs.These problems seriously restricts mine production.In order to ensure safety in production,numerical simulation was used to simulate and analyze the stability of mining process in deep longspan 7336 and 7337 stopes.It was found that in the process of single-layer mining,the central area of the roof in above two stopes was the concentrated area with stress and plasticity,so attention should be paid to support.In multi-layer mining,the phenomenon of stress concentration near the footwall fault zone was obvious,which was the focus area.
With the increasing depth of mining,the phenomenon of deep ground pressure in Shangzhuang mining area of Canzhuang Gold Mine is becoming more and more serious.Rock collapse and instability occur frequently in the roof and two sides during the mining process,and even rock burst occurs.These problems seriously restricts mine production.In order to ensure safety in production,numerical simulation was used to simulate and analyze the stability of mining process in deep longspan 7336 and 7337 stopes.It was found that in the process of single-layer mining,the central area of the roof in above two stopes was the concentrated area with stress and plasticity,so attention should be paid to support.In multi-layer mining,the phenomenon of stress concentration near the footwall fault zone was obvious,which was the focus area.
引文
[1]付建新,宋卫东,谭玉叶.岩体力学参数对巷道变形特性的影响程度分析[J].浙江大学学报(工学版),2017,51(12):2365-2372+2382.
[2]王有熙,邓广哲,曹晶.断层带对深部地压影响的数值模拟[J].西安科技大学学报,2011,31(6):818-822.
[3]刘建坡,李元辉,赵兴东,等.微震技术在深部矿山地压监测中的应用[J].金属矿山,2008(5):125-128.
[4]潘立友,郭明友.深部开采地压控制的研究[J].矿山压力与顶板管理,2002(2):27-28+110.
[5]彭赐灯.矿山压力与岩层控制研究热点最新进展评述[J].中国矿业大学学报,2015,44(1):1-8.
[6]付建新,宋卫东,杜建华.金属矿山采空区群形成过程中围岩扰动规律研究[J].岩土力学,2013,34(S1):508-515.
[7]穆玉生.金川二矿区深部巷道稳定性与支护技术研究[D].昆明:昆明理工大学,2005.
[8]邓红卫,胡普仑,周科平,等.采场结构参数敏感性正交数值模拟试验研究[J].中南大学学报(自然科学版),2013,44(6):2463-2469.
[9]赵兴东,李元辉,刘建坡,等.红透山矿深部开采岩爆潜在微震活动性研究[J].东北大学学报(自然科学版),2009,30(9):1330-1333.
[10]康德安,刘加权.红透山铜矿深部地压显现特点及活动规律[J].有色矿冶,1998(1):17-21+29.
[2]王有熙,邓广哲,曹晶.断层带对深部地压影响的数值模拟[J].西安科技大学学报,2011,31(6):818-822.
[3]刘建坡,李元辉,赵兴东,等.微震技术在深部矿山地压监测中的应用[J].金属矿山,2008(5):125-128.
[4]潘立友,郭明友.深部开采地压控制的研究[J].矿山压力与顶板管理,2002(2):27-28+110.
[5]彭赐灯.矿山压力与岩层控制研究热点最新进展评述[J].中国矿业大学学报,2015,44(1):1-8.
[6]付建新,宋卫东,杜建华.金属矿山采空区群形成过程中围岩扰动规律研究[J].岩土力学,2013,34(S1):508-515.
[7]穆玉生.金川二矿区深部巷道稳定性与支护技术研究[D].昆明:昆明理工大学,2005.
[8]邓红卫,胡普仑,周科平,等.采场结构参数敏感性正交数值模拟试验研究[J].中南大学学报(自然科学版),2013,44(6):2463-2469.
[9]赵兴东,李元辉,刘建坡,等.红透山矿深部开采岩爆潜在微震活动性研究[J].东北大学学报(自然科学版),2009,30(9):1330-1333.
[10]康德安,刘加权.红透山铜矿深部地压显现特点及活动规律[J].有色矿冶,1998(1):17-21+29.