充填法开采引起地表移动、变形和破坏的过程分析与机理研究
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摘要
基于地表GPS监测及地下围岩变形破坏的调查取证等大量数据资料,以金川二矿区为例,针对由充填法开采引起的地表移动、变形和破坏的现状,分别对其进行了滞后于开采的分析、对矿山井巷工程安全影响的后效性分析及空间发展过程分析。指出导致金川二矿采用充填法开采引起地表移动、变形和破坏的滞后期长、后效性强烈的原因,如充填支护作用与间断面的摩擦作用等等,并指出矿体采出至充填体充入期间围岩发生的移动、变形和破坏与整个矿山的地表岩移、变形和破坏的关系,所得的结论与现场基本一致,对今后的生产具有一定的指导意义。
According to large quantity of data obtained from the ground GPS monitoring and underground investigation,the current status of the ground movement,deformation and fracture induced by underground backfill mining in Jinchuan Mine No.2 was given.Based on the detailed analysis of its development process,the main reason and mechanism of the ground movement,deformation and fracture lagged behind the backfill mining were studied,and the intense aftereffect was analyzed and the formation mechanism was also given.At the same time,the mechanism was well studied in the respect of space development process,indicating the relationship between the rock mass movement,deformation,fracture and the whole mine during the period of cut-and-fill.The obtained conclusion was consistent with that obtained in situ and might be used to guide the future production.
According to large quantity of data obtained from the ground GPS monitoring and underground investigation,the current status of the ground movement,deformation and fracture induced by underground backfill mining in Jinchuan Mine No.2 was given.Based on the detailed analysis of its development process,the main reason and mechanism of the ground movement,deformation and fracture lagged behind the backfill mining were studied,and the intense aftereffect was analyzed and the formation mechanism was also given.At the same time,the mechanism was well studied in the respect of space development process,indicating the relationship between the rock mass movement,deformation,fracture and the whole mine during the period of cut-and-fill.The obtained conclusion was consistent with that obtained in situ and might be used to guide the future production.
引文
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[2]彭士群,王洪武.进路充填采矿法充填技术探讨[J].中国矿山工程,2004,33(3):30–33.(PENG Shi-qun,WANG Hong-wu.Discussion on filling techniques of access back-filling method[J].China Mine Engineering,2004,33(3):30–33.(in Chinese))
[3]李元辉,解世俊.阶段充填采矿方法[J].金属矿山,2006,360(6):13–15.(LI Yuan-hui,XIE Shi-jun.Mass filling method[J].Metal Mine.2006,360(6):13–15.(in Chinese)).
[4]BELL FG,STACEY T R,GENSKE D D.Minging subsidence and its effect on the environment:some differing examples[J].Environmental Geology,2000,40(1/2):135–152.
[5]OYLER D C,MARK C,DOLINAR D R,et al.A study on the ground control effect of mining longwall faces into open or backfilled entries[J].Geotechnical and Geological Engineering,2001,19(2):137–168.
[6]王正辉,高谦.胶结充填采矿法充填作用机理与稳定性研究[J].金属矿山,2003,328(10):18–20.(WANG Zheng-hui,GAO Qian.Study on mechanism and stability of filling in stoping cementend fill method[J].Metal Mine,2003,328(10):18–20.(in Chinese)).
[7]王劼,郑怀昌,陈小平.充填采矿法胶结充填体力学作用分析[J].有色金属,2004,56(3):109–117.(WANG Jie,ZHENG Huai-chang,CHEN Xiao-ping.Mechanical actions on cemented filling body in cut and fill stoping[J].Nonferrous Metals,2004,56(3):109–117.(in Chinese))
[8]DAI Hua-yang,WANG Jin-zhuang,et al.Seam dip angel based mining subsidence model and its application[J].International Journal of Rock Mechanics and Mining Sciences 2002,39:115–123.
[9]BRUNEAUA G.TYLERB D.B.HADJIGEORGIOUA J,et al.Influence of faulting on a mine shaft a case study,part I:background and instrumentation[J].International Journal of Rock Mechanics and Mining Sciences,2003,40:95–111.
[10]BRUNEAUA G,HUDYMAB M R,HADJIGE ORGIOUA J,et al.Influence of faulting on a mine shaft a case study,part II:numerical modeling[J].International Journal of Rock Mechanics and Mining Sciences,2003,40:113–125.
[11]XIE H P,YU G M,YANG L,et a1.The influence of proximate fault morphology on ground subsidence due to extraction[J].International Journal of Rock Mechanics and Mining Sciences,1998,35(8):1107–1111.
[12]李晓,路世豹,廖秋林,杜国栋.充填法开采引起的地裂缝分布特征与现场监测分析[J].岩石力学与工程学报,2006,25(7):1361–1369.(LI Xiao,LU Shi-bao,LIAO Qiu-lin,DU Guo-dong.Distribution characteristics and field monitoring of ground fissures caused by backfill mining[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(7):1361–1369.(in Chinese))
[13]布雷迪B H G,布朗E T.地下采矿岩石力学[M].冯树仁,余诗刚,等译.北京:煤炭工业出版社,1990.(BAKER B H G,BROWN E T.Rockmass mechanicr of underground mining[M].FENG Shu-ren,SHE Shi-gang,et al,trams.BeiJing:Coal Industry Press 1990.(in Chinese))
[14]徐嘉谟.金川矿山边坡岩体工程地质力学[M].北京:地震出版社,1998.(XU Jia-mo.Engineering geomechanics of slope rock mass in Jinchuan Mine[M].Beijing:Seismic Press,1998.(in Chinese))
[15]鲁全胜,高谦.金川二矿区采场巷道围岩与充填体收敛变形监测研究[J].岩石力学与工程学报,2003,22(增2):2633–2638.(LU Quan-sheng,GAO Qian.Montoring research on convergence deformation of laneway way rock and obsturator in No.2 digging of Jinchuan[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(S2):2633–2638.(in Chinese))
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