大垮塌原矿仓修复治理稳定性分析评价
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摘要
原矿仓放矿过程中矿石的冲击和磨损易造成原矿仓的变形、失稳和垮塌。针对这种问题,采用BLSS-PE矿用三维激光扫描仪对某矿山大垮塌原矿仓进行三维激光扫描,精确地建立起原矿仓的三维可视化模型,获得其形态、边界和位置等信息。基于原矿仓的修复方案,运用FLAC3D软件对原矿仓垮塌破坏情况进行数值模拟,掌握了附近围岩的地压分布状况,重点分析了原矿仓修复治理过程中整体结构的稳定性。数值模拟结果表明:采用双控锚索+锚网喷联合支护修复治理方案,原矿仓的破坏得到有效限制,围岩的稳定性也相应提高,同时破坏区域围岩的受力状态得到了改善,保证了作业人员安全,治理效果明显。
The impact and wear in the ore mining processis likely to cause deformation,instability and collapse of original ore bin.Aiming at this problem,the 3 Dlaser scanning of the mine's large collapsed ore bin was carried out by BLSS-PE mine 3 Dlaser scanner,and the 3 D visualization model of the original mine bin was accurately established to the shape,boundary and location.The numerical simulation results show that the damage control of the original mine is effectively limited by the dual-control anchor cable and anchor-mesh-shot combined support repair scheme,and the stability of the stability of surrounding rock.At the same time,the stress state of the surrounding rock is improved.This scheme ensures the safety of the operators and the effect of the treatment is obvious.
The impact and wear in the ore mining processis likely to cause deformation,instability and collapse of original ore bin.Aiming at this problem,the 3 Dlaser scanning of the mine's large collapsed ore bin was carried out by BLSS-PE mine 3 Dlaser scanner,and the 3 D visualization model of the original mine bin was accurately established to the shape,boundary and location.The numerical simulation results show that the damage control of the original mine is effectively limited by the dual-control anchor cable and anchor-mesh-shot combined support repair scheme,and the stability of the stability of surrounding rock.At the same time,the stress state of the surrounding rock is improved.This scheme ensures the safety of the operators and the effect of the treatment is obvious.
引文
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[3]陈凯,张达,张君,等.三维激光扫描技术在大直径深孔采矿中的应用[J].有色金属工程,2015,5(1):41-46.CHEN Kai, ZHANG Da, ZHANG Jun, et al.Application of 3D laser scanning technology in large diameter deep hole mining[J]. Nonferrous Metals Engineering,2015,5(1):41-46.
[4]ATKINSON.岩石断裂力学[M].北京:地震出版社,1992:101-106.ATKINSON.Rock fracture mechanics[M].Beijing:Seismological Press,1992:101-106.
[5]朱栗宝.冲击荷载作用下采场底部结构损伤机理研究及应用[D].长沙:中南大学,2011:60-72.ZHU Libao. Research and application of damage mechanism of bottom structure of stope under impact load[D].Changsha:Central South University,2011:60-72.
[6]罗周全,贾楠,谢承煜,等.深部主溜井垮塌的有限元分析及实测验证[J].科技导报,2013,31(23):26-31.LUO Zhouquan,JIA Nan,XIE Chengyu,et al.Finite element analysis and actual verification of deep main shaft collapse[J].Science and Technology Herald,2013,31(23):26-31.
[7]杨泽,侯克鹏,李克钢,等.云锡大屯锡矿岩体力学参数的确定[J].岩土力学,2010,31(6):1923-1928.YANG Ze, HOU Kepeng, LI Kegang, et al.Determination of mechanical parameters of rock mass in Dayi tin deposit,Yunxi[J].Rock and Soil Mechanics,2010,31(6):1923-1928.
[8]明世祥.地下金属矿山主溜井变形破坏机理分析[J].金属矿山,2004(1):5-8.MING Shixiang.Analysis of deformation and failure mechanism of main chute in underground metal mine[J].Metal Mine,2004(1):5-8.
[9]刘付高.深部溜井垮塌三维探测及其修复方案研究[J].采矿技术,2013(7):27-29.LIUFugao.Three-dimensional detection of deep slide collapse and its repair scheme[J].Mining Technology,2013(7):27-29.
[10]陈杰,罗周全,谢承煜,等.地下金属矿山主溜井损伤分析及修复研究[J].中国安全生产科学技术,2014(12):10-15.CHEN Jie,LUO Zhouquan,XIE Chengyu,et al.Research on damage analysis and repair of main runner in underground metal mine[J].China Safety Production Science and Technology,2014(12):10-15.