大跨软岩公路隧道围岩稳定性分析
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摘要
本文针对大跨度软岩隧道的围岩变形特点,以集呼高速公路旗下营隧道右线出口段YK197+040断面在CD法施工下围岩变形的现场监测数据为背景,整理了拱顶沉降的位移-时间曲线,探讨了拱顶沉降随开挖时间的变化情况。运用ABAQUS软件,结合实际隧道工艺建立了三维有限元模型,数值分析了隧道开挖后拱顶及周边位移的变化趋势,研究了围岩力学性能参数对隧道变形以及围岩稳定性的影响。在综合考虑监测数据与数值结果的基础上,为后续隧道安全施工提供了有益的理论建议。
This paper is focused on the research of surrounding rock deformation characteristics of soft rock tunnel with large span.Based on the site monitoring data of surrounding rock deformation of the right line section YK197+040 of Qixiaying tunnel located in Ji-Hu highway project and excavated with CD construction method,the displacement-time curve of tunnel crown settlement is presented in this paper,and the variation of crown settlement with excavation time is investigated.Using ABAQUS finite element software and considering the construction method,a three-dimensional model is established to numerically simulate the tunnel crown settlement and the surrounding displacement.The effect of mechanical parameters of surrounding rock on the tunnel deformation and surrounding rock stability is also numerically studied.Based on the result of site monitoring data and numerical result,a rational theoretical recommendation to secure the following tunnel excavation is presented in this paper.
This paper is focused on the research of surrounding rock deformation characteristics of soft rock tunnel with large span.Based on the site monitoring data of surrounding rock deformation of the right line section YK197+040 of Qixiaying tunnel located in Ji-Hu highway project and excavated with CD construction method,the displacement-time curve of tunnel crown settlement is presented in this paper,and the variation of crown settlement with excavation time is investigated.Using ABAQUS finite element software and considering the construction method,a three-dimensional model is established to numerically simulate the tunnel crown settlement and the surrounding displacement.The effect of mechanical parameters of surrounding rock on the tunnel deformation and surrounding rock stability is also numerically studied.Based on the result of site monitoring data and numerical result,a rational theoretical recommendation to secure the following tunnel excavation is presented in this paper.
引文
[1]张顶立,王梦恕,高军.复杂围岩条件下大跨隧道修建技术研究[J].岩石力学与工程学报,2003,22(2):290-296.(Zhang Dingli,Wang Mengshu,GaoJun.Construction technique of large-spanned tunnel un-der condition of complicated surrounding rocks[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(2):290-296.(in Chinese))
[2]时亚昕,陶德敬,王明年.大断面浅埋暗挖隧道施工引起的地表移动及变形预测[J].岩土力学,2008,29(2):465-470.(Shi Yaxin,Tao Dejing,Wang Mingnian.Prediction of ground surface movementand deformation in constructing large cross-section tun-nel by shallow-burying and hidden-digging method[J].Rock and Soil Mechanics,2008,29(2):465-470.(inChinese))
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[4]冯仲仁,张兴才,张世雄,等.大冶铁矿巷道变形监测研究[J].岩石力学与工程学报,2004,23(3):483-487.(Feng Zhongren,Zhang Xingcai,Zhang Shix-iong,et al.Monitoring study on drift deformation of Dayeiron mine[J].Chinese Journal of Rock Mechanics andEngineering,2004,23(3):483-487.(in Chinese))
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[6]蒋树屏,刘洪洲,鲜学福.大跨度扁坦隧道动态施工的相似模拟与数值分析研究[J].岩石力学与工程学报,2000,19(5):567-572.(Jiang Shubing,LiuHongzhou,Xian Xuefu.Dynamic construction of the an-alog simulation and the numerical analysis research inlarge span oblate tunnel[J].Chinese Journal of RockMechanics and Engineering,2000,19(5):567-572.(in Chinese))
[7]胡学兵,乔玉英.小团山大断面公路隧道稳定性数值模拟分析[J].重庆交通学院学报,2002,21(4):16-19.(Hu Xuebing,Qiao Yuying.The numerical val-ue analysis of Xiaotuanshan big segment highway tunnel`s stability[J].Journal of Chongqing Jiaotong Universi-ty,2002,21(4):16-19.(in Chinese))
[8]马富奎,刘涛,李利平.浅埋大跨隧道施工力学响应模拟与监测分析[J].岩土力学,2006,27(增):339-343.(Ma Fukui,Liu Tao,Li Liping.Excavationmechanics simulation and site monitoring analysis oflarge-span shallow tunnel[J].Rock and Soil Mechan-ics,2006,27(Supp.),339-343.(in Chinese))
[9]J.Shin,Y.Choi.Model testing for pipe-reinforcedtunnel heading in a granular soil[J].Tunnelling andUnderground Space Technology,2008,23(3):241-250.
[10]陈卫忠,王辉,田洪铭.浅埋破碎岩体中大跨隧道断面扁平率优化研究[J].岩石力学与工程学报,2011,30(7):1 389-1 395.(Chen Weizhong,WangHui,Tian Hongming.Study of flat ratio optimization oflarge-span tunnel section in shallow broken rock mass[J].Chinese Journal of Rock Mechanics and Engineer-ing,2011,30(7):1 389-1 395.(in Chinese))
[11]季毛伟,吴顺川,高永涛,等.双连拱隧道施工监测及数值模拟研究[J].岩土力学,2011,32(12):3 787-3 795.(Ji Maowei,Wu Shunchuan,Gao Yong-tao,et al.Construction monitoring and numerical sim-ulation of multi-arch tunnel[J].Rock and Soil Me-chanics.2011,32(12):3 787-3 795.(in Chinese))
[12]张黎明,郑颖人,王在泉,等.有限元强度折减法在公路隧道中的应用探讨[J].岩土力学,2007,28(1):97-106.(Zhang Liming,Zheng Yingren,WangZaiquan,et al.Finite element strength reduction in thehighway tunnel[J].Chinese Journal of Rock and SoilMechanics,2007,28(1):97-106.(in Chinese))
[13]程选生,郑颖人,田瑞瑞.隧道围岩结构地震动稳定性分析的动力有限元强度折减法[J].岩土力学,2011,32(4):1 241-1 248.(Cheng Xuansheng,Zheng Yingren,Tian Ruirui.Dynamic finite elementstrength reduction method of earthquake stability analy-sis of surrounding rock of tunnel[J].Chinese Journalof Rock and Soil Mechanics,2011,32(4):1 241-1248.(in Chinese))
[14]黄宏伟,徐凌.大风垭口岩石公路隧道围岩及初期支护变形与内力研究[J].岩石力学与工程学报,2004,23(1):44-52.(Huang Hongwei,Xu Ling.Study on deformation and internal force of surroundingrocks and initial support in Dafengyakou rock road tun-nel[J].Chinese Journal of Rock Mechanics and Engi-neering,2004,23(1):44-52.(in Chinese))
[2]时亚昕,陶德敬,王明年.大断面浅埋暗挖隧道施工引起的地表移动及变形预测[J].岩土力学,2008,29(2):465-470.(Shi Yaxin,Tao Dejing,Wang Mingnian.Prediction of ground surface movementand deformation in constructing large cross-section tun-nel by shallow-burying and hidden-digging method[J].Rock and Soil Mechanics,2008,29(2):465-470.(inChinese))
[3]李术才,朱维申,陈卫忠.弹塑性大位移有限元方法在软岩隧道变形预估系统研究中的应用[J].岩石力学与工程学报,2002,21(4):466-470.(LiShucai,Zhu Weishen,Chen Weizhong.Application ofelastoplastic large displacement finite element method tothe study of deformation prediction of soft rock tunnel[J].Chinese Journal of Rock Mechanics and Engineer-ing,2002,21(4):466-470.(in Chinese))
[4]冯仲仁,张兴才,张世雄,等.大冶铁矿巷道变形监测研究[J].岩石力学与工程学报,2004,23(3):483-487.(Feng Zhongren,Zhang Xingcai,Zhang Shix-iong,et al.Monitoring study on drift deformation of Dayeiron mine[J].Chinese Journal of Rock Mechanics andEngineering,2004,23(3):483-487.(in Chinese))
[5]陈耕野,刘斌,万明富,等.韩家岭大跨度公路隧道应力监测分析[J].岩石力学与工程学报,2005,24(增刊2):5509-5515.(Chen Gengye,Liu Bin,Wan Mingfu,et al.Analysis of stress monitoring of alarge-span highway tunnel in Hanjialing mountain[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(Supp.2):5 509-5 515.(in Chinese))
[6]蒋树屏,刘洪洲,鲜学福.大跨度扁坦隧道动态施工的相似模拟与数值分析研究[J].岩石力学与工程学报,2000,19(5):567-572.(Jiang Shubing,LiuHongzhou,Xian Xuefu.Dynamic construction of the an-alog simulation and the numerical analysis research inlarge span oblate tunnel[J].Chinese Journal of RockMechanics and Engineering,2000,19(5):567-572.(in Chinese))
[7]胡学兵,乔玉英.小团山大断面公路隧道稳定性数值模拟分析[J].重庆交通学院学报,2002,21(4):16-19.(Hu Xuebing,Qiao Yuying.The numerical val-ue analysis of Xiaotuanshan big segment highway tunnel`s stability[J].Journal of Chongqing Jiaotong Universi-ty,2002,21(4):16-19.(in Chinese))
[8]马富奎,刘涛,李利平.浅埋大跨隧道施工力学响应模拟与监测分析[J].岩土力学,2006,27(增):339-343.(Ma Fukui,Liu Tao,Li Liping.Excavationmechanics simulation and site monitoring analysis oflarge-span shallow tunnel[J].Rock and Soil Mechan-ics,2006,27(Supp.),339-343.(in Chinese))
[9]J.Shin,Y.Choi.Model testing for pipe-reinforcedtunnel heading in a granular soil[J].Tunnelling andUnderground Space Technology,2008,23(3):241-250.
[10]陈卫忠,王辉,田洪铭.浅埋破碎岩体中大跨隧道断面扁平率优化研究[J].岩石力学与工程学报,2011,30(7):1 389-1 395.(Chen Weizhong,WangHui,Tian Hongming.Study of flat ratio optimization oflarge-span tunnel section in shallow broken rock mass[J].Chinese Journal of Rock Mechanics and Engineer-ing,2011,30(7):1 389-1 395.(in Chinese))
[11]季毛伟,吴顺川,高永涛,等.双连拱隧道施工监测及数值模拟研究[J].岩土力学,2011,32(12):3 787-3 795.(Ji Maowei,Wu Shunchuan,Gao Yong-tao,et al.Construction monitoring and numerical sim-ulation of multi-arch tunnel[J].Rock and Soil Me-chanics.2011,32(12):3 787-3 795.(in Chinese))
[12]张黎明,郑颖人,王在泉,等.有限元强度折减法在公路隧道中的应用探讨[J].岩土力学,2007,28(1):97-106.(Zhang Liming,Zheng Yingren,WangZaiquan,et al.Finite element strength reduction in thehighway tunnel[J].Chinese Journal of Rock and SoilMechanics,2007,28(1):97-106.(in Chinese))
[13]程选生,郑颖人,田瑞瑞.隧道围岩结构地震动稳定性分析的动力有限元强度折减法[J].岩土力学,2011,32(4):1 241-1 248.(Cheng Xuansheng,Zheng Yingren,Tian Ruirui.Dynamic finite elementstrength reduction method of earthquake stability analy-sis of surrounding rock of tunnel[J].Chinese Journalof Rock and Soil Mechanics,2011,32(4):1 241-1248.(in Chinese))
[14]黄宏伟,徐凌.大风垭口岩石公路隧道围岩及初期支护变形与内力研究[J].岩石力学与工程学报,2004,23(1):44-52.(Huang Hongwei,Xu Ling.Study on deformation and internal force of surroundingrocks and initial support in Dafengyakou rock road tun-nel[J].Chinese Journal of Rock Mechanics and Engi-neering,2004,23(1):44-52.(in Chinese))
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