金属矿山矿柱回采时爆破荷载下采空区的围岩稳定性
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摘要
以朝不楞矿区铁锌多金属矿山工程地质为依据,采用FLAC-3D软件及超声波测试,以岩体爆破损伤理论为基础,系统研究了多次爆破作用下井下分段回采巷道掘进时,回采巷道围岩损伤累计增长规律,并对尾砂胶结物充填相邻采空区下的矿柱回采进行了三维有限元数值模拟,分析了围岩爆破累计损伤和残留矿体矿柱回采及采空区稳定性。
By taking the engineering geology of the Fe-Zn polymetallic ore in Chaobuleng mine as an example,based on the blast damage theory of rock,the FLAC-3D software was adopted and ultrasonic tests were carried out to systematically explore the cumulative damage development in the surrounding rock of the re-exploited tunnel.In the above investigation,the surrounding rock was impacted by blasting for many times in the section excavation process.And the re-exploitation of the tiberium spike under the mined-out area adjacent to the re-exploited tunnel was numerically simulated.Thereby the stability of the surrounding rock of the mined-out area was analyzed.It is helpful for engineering application.
By taking the engineering geology of the Fe-Zn polymetallic ore in Chaobuleng mine as an example,based on the blast damage theory of rock,the FLAC-3D software was adopted and ultrasonic tests were carried out to systematically explore the cumulative damage development in the surrounding rock of the re-exploited tunnel.In the above investigation,the surrounding rock was impacted by blasting for many times in the section excavation process.And the re-exploitation of the tiberium spike under the mined-out area adjacent to the re-exploited tunnel was numerically simulated.Thereby the stability of the surrounding rock of the mined-out area was analyzed.It is helpful for engineering application.
引文
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[15]黄胜,陈卫忠,杨建平,等.地下工程地震动力响应及抗震研究[J].岩石力学与工程学报,2009,28(3):483-490.Huang Sheng,Chen Wei-zhong,Yang Jian-ping,et al.Research on earthquake-induced dynamic responses and a seismic measure for underground engineering[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(3):483-490.
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[2]王庆军,郭树林,王军民,等.全面采矿一法采场的矿柱回采[J].黄金,2006,27(6):21-23.Wang Qing-jun,Guo Shu-lin,Wang Jun-min,et al.Comprehensive mining method of stope tiberium spike recovery[J].Gold,2006,27(6):21-23.
[3]李宏平,刘樟祥.多层矿体的矿柱回采[J].有色金属:矿山部分,2003,55(1):5-8.Li Hong-ping,Liu Zhang-xiang.Multilayer orebody tiberium spike recovery[J].Nonferrous Metals:Mining Section,2003,55(1):5-8.
[4]余荣炳,万国春.金山金矿房柱法开采的矿柱回采[J].矿业研究与开发,2003,23(3):3-4.Yu Rong-bing,Wan Guo-chun.Jinshan gold room and pillar mining method of mining[J].Spike Mining Industry Research and Development,2003,23(3):3-4.
[5]刘沐宇,徐长佑.地下采空区矿柱稳定性分析[J].矿冶工程,2000(1):19-22.Liu Mu-yu,Xu Chang-you.Underground goaf tiberium spikes stability analysis[J].Mining and Metallurgy Engineering,2000(1):19-22.
[6]赵奎.残矿柱回采与空区稳定性的有限元模拟研究[J].采矿技术,2002(6):51-53.Zhao Kui.The tiberium spikes mining and empty area stability of the finite element simulation study[J].The Mining Technology,2002(6):51-53.
[7]汪旭光,熊代余.第六届国际岩石爆破破碎(Fragblast 6)学术会议综述[J].爆破,2000,17(增刊):1-5.Wang Xu-guang,Xiong Dai-yu.General introduction of Fargblast 6symposium[J].Blasting,2000,17(suppl):1-5.
[8]张丽华,陶连金.节理岩体地下洞室群的地震动力响应分析[J].世界地震工程,2002,18(2):158-162.Zhang Li-hua,Tao Lian-jin.Dynamic response analysis of large underground excavations in jointed rock[J].World Earthquake Engineering,2002,18(2):158-162.
[9]阳生权.隧道围岩爆破地震累积效应研究[J].岩石力学与工程学报,2007,3(8):1451-1454.Yang Sheng-quan.The surrounding rock blasting seismic cumulative effects[J].Journal of Rock Mechanics and Engineering,2007,3(8):1451-1454.
[10]熊代余,顾毅成.岩石爆破理论与技术新进展[M].北京:冶金工业出版社,2002.
[11]Grady D E,Kipp M E.Continuum modeling of explosive fracture in oi1shale[J].International Journal of Rock Mechanics&Mining Sciences,1990,17(2):147-157.
[12]Taylor L M,Chen E P,Kuszmaul J S.Microcrack induced damage accumulation in brittle rock under dynamic loading[J].Computer Method in Applied Mechanics and Engineering,1996,55:301-320.
[13]夏祥,李俊如,李海波,等.爆破荷载作用下岩体振动特征的数值模拟[J].岩土力学,2005,26(1):50-56.Xia Xiang,Li Jun-ru,Li Hai-bo,et al.Udec modeling of vibration characteristics of jointed rock mass under explosion[J].Rock and Soil Mechanics,2005,26(1):50-56.
[14]邱流潮,金峰.地震分析中人工边界处理与地震动输入方法研究[J].岩土力学,2006,27(9):1502-1504.Qiu Liu-chao,Jin Feng.Study of method of earthquake input and artificial boundary conditions for seismic soilstructure interaction analysis[J].Rock and Soil Mechanics,2006,27(9):1502-1504.
[15]黄胜,陈卫忠,杨建平,等.地下工程地震动力响应及抗震研究[J].岩石力学与工程学报,2009,28(3):483-490.Huang Sheng,Chen Wei-zhong,Yang Jian-ping,et al.Research on earthquake-induced dynamic responses and a seismic measure for underground engineering[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(3):483-490.
[16]中华人民共和国行业标准编写组.JTGD 70-2004公路隧道设计规范[S].北京:人民交通出版社,2004.
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