超大断面隧道软弱围岩变形控制与施工步距研究
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- 英文论文题名：Study on Deformation Control and Construction Step of Soft Surrounding Rock in Super Large Section Tunnel
- 论文作者：皇民 ; 苑俊杰 ; 郭院成 ; 高波
- 英文论文作者：HUANG Min ; YUAN Junjie ; GUO Yuancheng ; GAO Bo ; School of Civil Engineering ; Henan Institute of Engineering ; School of Civil Engineering ; Zhengzhou Univeristy ; School of Civil Engineering ; Southwest Jiaotong University
- 年：2016
- 作者机构：河南工程学院土木工程学院;郑州大学土木工程学院;西南交通大学土木工程学院;
- 论文关键词：超大断面 ; 隧道 ; 变形控制 ; 施工步距
- 英文论文关键词：Super large section ; Tunnel ; Deformation control ; Construction step
- 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：U455.4
- 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：8
- 文件大小：2562k
- 原文格式：O
- 会议级别：全国
摘要
文章以韩门隧道为依托,采用三维数值分析的手段,研究软弱围岩超大断面隧道开挖围岩变形控制和三台阶五步开挖步距对围岩变形的影响。通过研究各台阶开挖长度对拱顶竖向位移的影响,确定台阶开挖合理长度和支护要求,分析各开挖步对隧道围岩荷载释放的影响,优化施工步距。分析结果表明,隧道上台阶拱部开挖对隧道围岩竖向位移具有非常重要的作用,上台阶开挖长度应控制在20 m以内;仰拱闭合施工对台阶法施工很重要,施工中应及早封闭仰拱和施做二次衬砌。
Using the method of three dimensional numerical analysis,the influence of the deformation control of surrounding rock and excavation step of three-step-five-part excavation relying on the Hanmen tunnel.By studying the influence of the excavation length of each step on the vertical displacement of arch crown,the reasonable length of step excavation and the requirement of support are determined.The influence of the excavation step on the load release of surrounding rock is analyzed.Analysis results show that arch excavation has a very important role on vertical displacement of tunnel surrounding,the arch step should be in 20 meters;inverted arch closure construction is very important to the construction of bench cut method,the inverted arch and the secondary lining should be constructed early.
Using the method of three dimensional numerical analysis,the influence of the deformation control of surrounding rock and excavation step of three-step-five-part excavation relying on the Hanmen tunnel.By studying the influence of the excavation length of each step on the vertical displacement of arch crown,the reasonable length of step excavation and the requirement of support are determined.The influence of the excavation step on the load release of surrounding rock is analyzed.Analysis results show that arch excavation has a very important role on vertical displacement of tunnel surrounding,the arch step should be in 20 meters;inverted arch closure construction is very important to the construction of bench cut method,the inverted arch and the secondary lining should be constructed early.
引文
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[12]郑万坤,仇玉良,史宝童,黄俊文,肖均.风积沙隧道施工步距荷载释放与沉降控制研究[J].公路,2012.(1):222-226.ZHENG Wankun,QIU Yuliang,SHI Baotong,HUANG Junwen,XIAO Jun,Study on load release and settlement control of wind blown sand tunnel construction[J].Highway,2012.(1):222-226.
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[14]JTG D70—2004.公路隧道设计规范[S].JTG D70-2004 Code for design of highway tunnels[S].
[2]李利平,李术才,张庆松.岩溶地区隧道裂隙水突出力学机制研究[J].岩土力学,2010,31(2):523-528.LI Liping,LI SHucai,ZHANG Qingsong.Study on mechanical mechanism of fracture water outburst in tunnel in Karst Area[J].Rock and soil mechanics,2010,31(2):523-528.
[3]钱七虎,戎晓力.中国地下工程安全风险管理的现状、问题及相关建议[J].岩石力学与工程学报,2008,27(4):649-655.QIAN Qihu,RONG Xiaoli.Status problems and related suggestions on safety risk management of underground engineering in China[J].Journal of rock mechanics and Engineering,2008,27(4):649-655.
[4]李利平.高风险岩溶隧道突水灾变演化机制及其应用研究[博士学位论文][D].济南:山东大学,2009.LI Liping.High risk karst tunnel water inrush evolution mechanism and its application[D].Ji'nan:Shandong University,2009
[5]刘高,张帆宇,李新召,等.木寨岭隧道大变形特征及机制分析[J].岩石力学与工程学报,2005,24(2):5 52 1-5 526.LIU Gao,ZHANG Fanyu,LI Xinzhao.Characteristics and mechanism analysis of large deformation of the Muzailing tunnel[J].Journal of rock mechanics and Engineering,2005,24(2):5521-5526.
[6]郭军,王明年,谭忠盛,等.大跨浅埋黄土隧道中系统锚杆受力机制研究[J].岩土力学,2010,31(3):870-874.GUO Jun,WANG Mingnian,TAN Zhongsheng.Research on Mechanism of bolt stress in large span shallow buried loess tunnel[J].Rock and soil mechanics,2010,31(3):870-874.
[7]李围,何川.超大断面越江盾构隧道结构设计与力学分析[J].中国公路学报,2007,20(3):76-80.LI Wei,HE Chuan.Structural design and mechanical analysis of the cross river shield tunnel with super large cross section[J].Chinese Journal of highway,2007,20(3):76-80.
[8]刘招伟,王明胜,方俊波.高地应力大变形隧道直呼系统的试验研究[J].土木工程学报,2010,43(5):111-116.LIU Zhaowei,WANG Mingsheng,FANG Junbo.Highland experimental study on stress in large deformation tunnel call system[J].China Civil Engineering Journal,2010,43(5):111-116.
[9]皇民.浅埋双洞隧道地震动力响应研究[博士学位论文][D].成都:西南交通大学,2009.HUANG Min.Study on seismic dynamic response of shallow buried double tunnel tunnel[D].Chengdu:Southwest JiaotongUniversity,2009
[10]潘昌实.隧道力学数值方法[M].北京:中国铁道出版社,1995.PAN Changshi.Numerical method of Tunnel MechanicsfM].Beijing:China Railway Publishing House,1995
[11]吴德兴,汪波,杜飞天.弁山隧道加固方案的三维数值分析研究[J].现代隧道技术,2008.45(2):16-21.WU Dexing,WANG Bo,DU Feitian,numerical analysis on MouSHan mountain tunnel reinforcement scheme[J].Modern tunnel technology,2008.45(2):16-21.
[12]郑万坤,仇玉良,史宝童,黄俊文,肖均.风积沙隧道施工步距荷载释放与沉降控制研究[J].公路,2012.(1):222-226.ZHENG Wankun,QIU Yuliang,SHI Baotong,HUANG Junwen,XIAO Jun,Study on load release and settlement control of wind blown sand tunnel construction[J].Highway,2012.(1):222-226.
[13]晏启祥,何川,姚勇,邓刚.小净距隧道施工小导管注浆效果的数值模拟分析[J].岩土力学,2004,25(2):239-242.YAN Qixiang,HE Chuan,YAO Yong,DENG Gang,Numerical simulation analysis of the effect of small pipe grouting in tunnel construction[J].Rock and soil mechanics,2004,25(2):239-242.
[14]JTG D70—2004.公路隧道设计规范[S].JTG D70-2004 Code for design of highway tunnels[S].
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