砂性地基盾构隧道掘进面被动失稳上限分析

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• 英文论文题名：Upper Bound Analysis on the Passive Face Instability of Shield Tunnel in Sand
• 论文作者：李凤涛 ; 俞悦 ; 唐晓武
• 英文论文作者：LI Fengtao ; YU Yue ; TANG Xiaowu ; The Third Railway Survey and Design Institute Group Corporation ; Research Center of Coastal and Urban Geotechnical Engineering ; Zhejiang University
• 年：2016
• 作者机构：铁道第三勘察设计研究院集团城交分院;浙江大学滨海与城市岩土工程研究中心;
• 论文关键词：盾构隧道 ; 掘进面 ; 被动失稳 ; 支护压力
• 英文论文关键词：Shield tunnel ; Working face ; Passive instability ; Support pressure
• 会议召开时间：2016-10-24
• 会议录名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会论文集
• 语种：中文
• 分类号：U455.43
• 学会代码：OGTY
• 会议名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会
• 会议地点：中国四川成都
• 主办单位：中国土木工程学会隧道及地下工程分会
• 学会名称：中国土木工程学会
• 页数：7
• 文件大小：721k
• 原文格式：O
• 会议级别：全国

摘要

盾构掘进时,密封舱支护压力需要维持在合理范围来保持开挖面稳定,支护压力过大则会引起开挖面被动失稳造成地表隆起破坏。近来研究表明浅埋隧道首先发生局部失稳破坏而非整体破坏,而针对掘进面被动失稳局部破坏模式尚没有相关的理论分析,本文提出三维局部破坏上限分析模型并进行上限分析,分析表明:浅埋隧道条件下,掘进面首先发生局部失稳破坏;随着覆土厚度和土体摩擦角增大,局部失稳高度增大直至掘进面整体失稳。本文极限支护压力解位于经典解之间,为确定极限支护压力的大小提供了合理的参考。
An appropriate range of support pressure in the chamber should be controlled in the slurry shield tunneling to sustain the stability of tunnel face.However,the passive instability can occur suddenly bringing the blow-out damage of ground surface.According to the former literatures,the local instability on the up part of face is more occurred than the whole instability of tunnel face.There is no theoretical analysis applied to investigate the local passive instability of face.Furthermore,by proposing a 3D kinematically admissible mechanism for the partial blow-out instability,the upper bound solution of support pressure is derived.The analytical solution show that the local instability on the up part of face occur first.The height of this failureis increased with cover depth ratio and the friction angle increasing.The support pressure given in this research is in agreement with the classical solution.By reference to this study,the design of support pressure in tunneling will be performed more reasonable.

引文

[1]竺维彬,鞠世健.地铁盾构施工风险源及典型事故的研究[M].广州:暨南大学出版社,2009.ZHU Weibin,JUShijian.Research on the risk sources and typical cases in tunnel construction[M].Guangzhou:Jinan University Press,2009.
    [2]竺维彬,鞠世健,史海鸥.广州地铁三号线盾构隧道工程施工技术研究[M].广州:暨南大学出版社,2007.ZHU Weibin,JU Shijian,SHI Haiou.Research on Construction Technology for Shield Tunnelling of Guangzhou Metro Line 3[M].Guangzhou:Jinan University Press,2007.
    [3]BEZUIJEN A,BRASSINGA,H E.Tunnelling:a decade of progress:Geodelft 1995-2005[M].Abingdon:Taylor and Francis,2006.
    [4]LECA E,DORMIEUS L.Upper and lower bound solutions for the face stability of shallow circular tunnels in frictional material[J].Geotechnique,1990,40(4):581-606.
    [5]SOUBRA A H.Three-dimensional face stability analysis of shallow circular tunnels[C]//ISRM International Symposium.International Society for Rock Mechanics,2000.
    [6]MOLLON G,DIAS D,SOUBRA A H.Probabilistic analysis and design of circular tunnels against face stability[J].International Journal of Geomechanics,2009,9(6):237-249.
    [7]MOLLON G,DIAS D,SOUBRA A H.Rotational failure mechanisms for the face stability analysis of tunnels driven by a pressurized shield[J].International Journal for Numerical and Analytical Methods in Geomechanics,2011,35(12):1363-1388.
    [8]吕玺琳,王浩然,黄茂松.盾构隧道开挖面稳定性极限理论研究[J].岩土工程学报,2011,33(1):57-62.LV Xilin,WANG Haoran,et al.Limit Theoretical Study on Face Stability of Shield Tunnels[J].Chinese Journal of Geotechnical Engineering,2011,33(1):57-62.
    [9]宋春霞,黄茂松,吕玺琳.非均质地基中平面应变隧道开挖面稳定上限分析[J].岩土力学,2011,32(9):2645-2662.SONG C X,HUANG M S,LV X L.Upper bound analysis of plain strain tunnel in nonhomogeneous clays[J].Rock and Soil Mechanics,2011,32(9):2645-2662.
    [10]HUANG M S,SONG C X.Upper bound stability analysis of plane strain tunnel in non-homogeneous clay[J].Tunneling and Underground Space Technology,38:213-223,2013.
    [11]裴红军.城市隧道盾构法施工开挖面稳定性研究[硕士学位论文][D].南京:河海大学,2005.PEI Hongjun.Research for face stability at shield tunneling[M.S.Thesis][D].Nanjing:Hohai University,2005.
    [12]陈仁朋,齐立志,汤旅军,周保生.砂土地层盾构隧道开挖面被动破坏极限支护力研究[J].岩石力学与工程学报,2013,32(S1):2877-2882.CHEN Renpeng,QI Lizhi,TANG Lvjun,ZHOU Baosheng.Study of limit support force of excavation face's passive failure of shield tunnels in sand strata[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(S1):2877-2882.
    [13]齐立志.盾构隧道开挖面被动破坏支护力研究[硕士学位论文][D].杭州:浙江大学,2012.QI Lizhi.Study on blow-out face pressure of shield tunnels[M.S.Thesis][D].Hangzhou:Zhejiang University,2012.
    [14]李昀.软土中超大直径泥水平衡盾构开挖面稳定性研究[博士学位论文][D].上海:同济大学,2008.LI Yun.Stability analysis of large slurry shield-driven tunnel in soft clay[PhD Thesis][D].Shanghai:Tongji University,2008.
    [15]LI,Y.,Emeriault F.,Kastner R.,Zhang ZX.Stability analysis of large slurry shield-driven tunnel in soft clay[J].Tunneling and Underground Space Technology,2009,24(4):472-481.
    [16]DIAS D,JANIN J P,SOUBRA A H,KASTNER R.Three dimensional face stability analysis of circular tunnels by numerical simulations[c]//In:GeoCongress(ASCE),2008:886-893.