某典型采空区失稳模式分析及可视化验证
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摘要
针对某铜矿典型采空区的工程实际,运用FLAC3D软件对采空区失稳进行模拟分析,确定了采空区分别在静力作用和动力扰动条件下的失稳模式.结果表明,该矿采空区在静力条件下主要为矿柱剪切破坏失稳,在动力扰动条件下则表现为顶板剪切破坏和矿柱剪切破坏复合失稳,实测结果与数值分析结果一致.为矿山有效开展采空区安全分析及处理提供可靠的技术支持.
Aimed at engineering reality of certain copper mine typical cavity, this paper adopts the software of Flac3D to simulate and analyze the instability cavity, and it determines the possible instability modes in static and dynamic disturbance conditions. Results show that it exists the failure mode of cavity under the condition of static mainly for bearer shear failure, while under dynamic disturbances it does mainly for composite the roof shear failure with bearer shear failure. The measured results and the numerical analysis results are consistent, which provides reliably technical supports for effective safety analysis and cavity disposal.
Aimed at engineering reality of certain copper mine typical cavity, this paper adopts the software of Flac3D to simulate and analyze the instability cavity, and it determines the possible instability modes in static and dynamic disturbance conditions. Results show that it exists the failure mode of cavity under the condition of static mainly for bearer shear failure, while under dynamic disturbances it does mainly for composite the roof shear failure with bearer shear failure. The measured results and the numerical analysis results are consistent, which provides reliably technical supports for effective safety analysis and cavity disposal.
引文
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[2]陈育民,徐鼎平.FLAC/FLAC3D基础与工程实例[M].北京:中国水利水电出版社,2008.CHEN Yumin,XU Dingping.FLAC/FLAC3D foundation and engineering example[M].Beijing:China Water Power Press,2008.
[3]蔡美峰,何满潮.岩石力学与工程[M].北京:科学技术出版社,2002.CAI Meifeng,HE Manchao.Rock mechanics and engineering[M].Beijing:Science Press,2002.
[4]Luo Z Q,Liu X M,Su J H,et al.Deposit3d modeling and application[J].Journal of Central South University of Technology,2007,14(2):225-229.
[5]Jarosz A P,Shepherd L.Open stope cavity monitoring for the control of dilution and ore loss[J].Mining Engineering,1998(8):63-67.
[6]罗周全,刘晓明,苏家红,等.基于Surpac的矿床三维模型构建[J].金属矿山,2006(4):33-36.LUO Zhouquan,LIU Xiaoming,SU Jiahong,et al.Building of three-dimensional models of deposit based on surpac[J].Metal Mine,2006(4):33-36.
[7]刘敦文,徐国元,黄仁东,等.金属矿采空区探测新技术[J].中国矿业,2000,9(4):34-37.LIU Duwen,XU Guoyuan,HUANG Rendong.A new technique for prospecting exhausted areas in metal mines[J].China Mining Magazine,2000,9(4):34-37.
[8]Luo Z Q,Liu X M,Zhang B,et al.Cavity3D modeling and correlative techniques based on cavity monitoring[J].Journal of Central South University of Technology,2008,15(5):639-644.
[9]罗周全,罗贞焱,刘晓明,等.大规模采场开采稳定性模拟预测与实测验证[J].矿冶工程,2009,29(6):5-8.LUO Zhouquan,LUO Zhenyan,LIU Xiaoming,et al.Simulation prediction of stability in large-scale stope mining and verification by the monitoring results[J].Mining and Metallurgical Engineering,2009,29(06):5-8.
[10]Itasca Consulting GroupInc.FLAC3D(Fast lagrangian analysis of continuain3dimensions),Version2.10,users manual[M].USA:Itasca Consulting Group Inc,2002.
[11]Chen X,Wang L H,et al.Stability analysis of tunnel surrounding rock based on mohr-coulomb point safety factor[J].Huazhong University of Science and Technology,2010,28(4):100-102.
[12]Opteeh.Cavity monitoring system wireless user manual[M].Canada:Opteeh System Corporation,2004.
[13]宁晓骏,周亦唐,唐正光.地震作用下深水高墩刚构桥梁的动力响应分析[J].湖南科技大学学报(自然科学版),2011,26(2):54-56.NING Xiaojun,ZHOU Yitang,TANG Zhengguang.Earthquake response analysis for rigid-frame bridge with high-rise piers in deep water[J].Journal of Hunan University of Science&Technology(Natural Science Edition).2011,26(2):54-56.
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