冻结法加固地铁联络通道周边土层温度场发展规律研究
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- 英文论文题名：Temperature Field Development at Cross-Passage of Subway Improved by Ground Freezing Method
- 论文作者：胡俊 ; 卫宏 ; 刘勇
- 英文论文作者：HU Jun ; WEI Hong ; LIU Yong ; College of Civil Engineering and Architecture ; Hainan University ; Department of Civil & Environmental Engineering ; National University of Singapore
- 年：2016
- 作者机构：海南大学土木建筑工程学院;新加坡国立大学土木与环境工程系;
- 论文关键词：污水深隧 ; 双层衬砌 ; 内水压 ; 二衬施作时机
- 英文论文关键词：Cross-passage ; Ground freezing method ; Temperature field ; Numerical simulation
- 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：U231.3;U455.49
- 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：9
- 文件大小：3103k
- 原文格式：O
- 会议级别：全国
摘要
上海地铁四号线联络通道冻结加固工法引发的重大工程事故表明,对冻结法加固联络通道周边土层温度场的发展规律亟待深入研究。本文结合苏州地铁玉山公园站一苏州乐园站区间联络通道冻结加固工程,建立三维数值模型对该工程冻土帷幕温度场发展规律展开研究,动态模拟冻土帷幕的演化过程,研究结果表明:实测温度值和数值计算温度值总体趋势基本一致,用数值模型来模拟联络通道冻土帷幕温度场的变化过程是可行的;在设计冻结方案下,冻结壁交圈时间为12 d,整个冻土帷幕最薄弱环节为下行线隧道与联络通道相交的喇叭口顶部,建议补打一排较短冻结孔来加强该区域的冻结效果;路径1和路径3的降温规律基本相似,离冻结管越近降温越快,路径2上靠近上行线土体温度相对较低,靠近下行线土体温度较高;路径1和路径3的平均温度约为-23℃和-21℃;实际证明采用该联络通道冻结方案是可行的。
The accident caused by Shanghai Metro cross-passage freezing construction shows that the development law of surrounding soil temperature field for connecting passage by freezing reinforcement method is of urgent to further study.In this paper,based on the connecting cross-passage project of Suzhou Yushan Park Metro Station—Suzhou Amusement Land Station,which is constructed by freezing method,it establishes the three-dimensional numerical model of the temperature field of frozen soil wall to study the law of development,dynamic simulate the evolution of permafrost curtain.The results show that:the numerical temperature values are consistent with measured temperature values,using the numerical model to simulate changes in the process of cross-passage permafrost temperature field curtain is feasible;in term of the freezing design option,the freezing wall cross lap time will be 12 days,the weakest zone is the top of the bell mouth,at which the downlink intersects with the cross-passage,it is recommended to re-install a row of shorter freezing holes to strengthen the region;the basic cooling law for path 1 and 3 is similar,the more adjacent to cooling pipe the more fast the cooling,the soil temperature of Path 2 near the upstream line is relatively low,closer to the down line higher the soil temperature;for path 1 and 3,the average temperature is about-231and-21 °C;the ground freezing method for the cross-passage is proven to be feasible.
The accident caused by Shanghai Metro cross-passage freezing construction shows that the development law of surrounding soil temperature field for connecting passage by freezing reinforcement method is of urgent to further study.In this paper,based on the connecting cross-passage project of Suzhou Yushan Park Metro Station—Suzhou Amusement Land Station,which is constructed by freezing method,it establishes the three-dimensional numerical model of the temperature field of frozen soil wall to study the law of development,dynamic simulate the evolution of permafrost curtain.The results show that:the numerical temperature values are consistent with measured temperature values,using the numerical model to simulate changes in the process of cross-passage permafrost temperature field curtain is feasible;in term of the freezing design option,the freezing wall cross lap time will be 12 days,the weakest zone is the top of the bell mouth,at which the downlink intersects with the cross-passage,it is recommended to re-install a row of shorter freezing holes to strengthen the region;the basic cooling law for path 1 and 3 is similar,the more adjacent to cooling pipe the more fast the cooling,the soil temperature of Path 2 near the upstream line is relatively low,closer to the down line higher the soil temperature;for path 1 and 3,the average temperature is about-231and-21 °C;the ground freezing method for the cross-passage is proven to be feasible.
引文
[1]曾晖,胡俊,王效宾.苏州地铁一号线联络通道加固方式比选研究[J].铁道建筑,2012,10:58-61.ZENG Hui,HU Jun,Wang Xiaobin.Comparison and selection of reinforcing methods of connected tunnel for Suzhou metro line No.1[J].Railway Engineering,2012,10:58-61.
[2]胡俊,杨平.大直径杯型冻土壁温度场数值分析[J].岩土力学,2015,36(2):523-531.HU Jun,YANG Ping.Numerical analysis of temperature field within large-diameter cup-shaped frozen soil wall[J].Rock and Soil Mechanics,2015,36(2):523-531.
[3]胡俊,杨平,董朝文,等.盾构始发端头化学加固范围及加固工艺研究[J].铁道建筑,2010,15(2):47-51.HU Jun,YANG Ping,DONG Chaowen,et al.Study on the method and area of chemical reinforcement at the end of shield tunnel construction[J].Railway Engineering,2010,15(2):47-51.
[4]胡俊.苏州地铁盾构隧道端头加固方式及其关键问题研究[D].南京:南京林业大学,2009,6.HU Jun.Study on Reinforcement Pattern and Pertinent Problems of Shield Tunnel End in SUZHOU Subway Project[D].Nanjing:Nanjing Forestry University,2009,6.
[5]张志强,何川.用冻结法修建地铁联络通道施工力学研究[J].岩石力学与工程学报,2005,24(18):3211-3217.ZHANG Zhiqiang,HE Chuan.Study on construction of cross connection of shield tunnel and connecting aisle by freezing method[J].Chinese Journal of Rock Mechanics and Engineering,24(18):3211-3217.
[6]李大勇,曹立雪,李健.地铁联络通道冻结施工中渗漏影响的数值分析[J].地下空间与工程学报,2012,8(1):111-115.LI Dayong,CAO Llixue,LI Jian.Analysis on Influence of Seepage in a Cross Passage on Frozen Walls by Numerical Simulation Method[J].Chinese Journal of Underground Space and Engineering,2012,8(1):111-115.
[7]覃伟,杨平,金明,等.地铁超长联络通道人工冻结法应用与实测研究[J].地下空间与工程学报,2010,6(5):1065-1071.QIN Wei,YANG Ping,JIN Ming,et al.Application and Survey Analysis of Freezing Method Applied to Ultra-long Connected Aisle in Metro Tunnel[J].Chinese Journal of Underground Space and Engineering,2010,6(5):1065-1071.
[8]李攀,谢雄耀,季倩倩.上海长江隧道冻土帷幕温度场动态演化机理[J].同济大学学报(自然科学版),2013,41(4):515-521.LI Pan,XIE Xiongyao,JI Qianqian.Dynamic evolution analysis on frozen wall temperature of cross passage of Shanghai Yangtze river tunnel[J].Journal of Tongji University(Natural Science),2013,41(4):515-521.
[9]李攀,谢雄耀.上海长江隧道冻结监测优化设计及数据分析[J].地下空间与工程学报,2012,8(1):122-128.LI Pan,XIE Xiongyao.Research on Optimization of Freezing-temperature Monitoring Design and Method of Data Analysis in Shanghai Yangtze River Tunnel[J].Chinese Journal of Underground Space and Engineering,2012,8(1):122-128.
[10]胡俊.高水压砂性土层地铁大直径盾构始发端头加固方式研究[D].南京:南京林业大学,2012,6.HU Jun.Study on the Reinforcement Methods of Subway Large-diameter Shield Launching in the Sandy Clay with High Water Pressure[D].Nanjing:Nanjing Forestry University,2012,6.
[11]胡俊,刘勇,李玉萍.方形与圆形冻结管单管冻结温度场数值对比分析[J].森林工程,2015,31(4):152-157.HU Jun,LIU Yong,LI Yuping.Numerical Comparison of Temperature Fields Formed by Square-and Circular-shaped Freezing Pipes in Frozen Ground[J].Forest Engineering,2015,31(4):152-157.
[12]胡俊.水泥改良前后土体冻结温度及力学特性试验研究[J].铁道建筑,2013,18(4):156-159.HU Jun.Experimental study on freezing temperature and mechanical performance of soil before and after cement improving[J].Railway Engineering,2013,18(4):156-159.
[2]胡俊,杨平.大直径杯型冻土壁温度场数值分析[J].岩土力学,2015,36(2):523-531.HU Jun,YANG Ping.Numerical analysis of temperature field within large-diameter cup-shaped frozen soil wall[J].Rock and Soil Mechanics,2015,36(2):523-531.
[3]胡俊,杨平,董朝文,等.盾构始发端头化学加固范围及加固工艺研究[J].铁道建筑,2010,15(2):47-51.HU Jun,YANG Ping,DONG Chaowen,et al.Study on the method and area of chemical reinforcement at the end of shield tunnel construction[J].Railway Engineering,2010,15(2):47-51.
[4]胡俊.苏州地铁盾构隧道端头加固方式及其关键问题研究[D].南京:南京林业大学,2009,6.HU Jun.Study on Reinforcement Pattern and Pertinent Problems of Shield Tunnel End in SUZHOU Subway Project[D].Nanjing:Nanjing Forestry University,2009,6.
[5]张志强,何川.用冻结法修建地铁联络通道施工力学研究[J].岩石力学与工程学报,2005,24(18):3211-3217.ZHANG Zhiqiang,HE Chuan.Study on construction of cross connection of shield tunnel and connecting aisle by freezing method[J].Chinese Journal of Rock Mechanics and Engineering,24(18):3211-3217.
[6]李大勇,曹立雪,李健.地铁联络通道冻结施工中渗漏影响的数值分析[J].地下空间与工程学报,2012,8(1):111-115.LI Dayong,CAO Llixue,LI Jian.Analysis on Influence of Seepage in a Cross Passage on Frozen Walls by Numerical Simulation Method[J].Chinese Journal of Underground Space and Engineering,2012,8(1):111-115.
[7]覃伟,杨平,金明,等.地铁超长联络通道人工冻结法应用与实测研究[J].地下空间与工程学报,2010,6(5):1065-1071.QIN Wei,YANG Ping,JIN Ming,et al.Application and Survey Analysis of Freezing Method Applied to Ultra-long Connected Aisle in Metro Tunnel[J].Chinese Journal of Underground Space and Engineering,2010,6(5):1065-1071.
[8]李攀,谢雄耀,季倩倩.上海长江隧道冻土帷幕温度场动态演化机理[J].同济大学学报(自然科学版),2013,41(4):515-521.LI Pan,XIE Xiongyao,JI Qianqian.Dynamic evolution analysis on frozen wall temperature of cross passage of Shanghai Yangtze river tunnel[J].Journal of Tongji University(Natural Science),2013,41(4):515-521.
[9]李攀,谢雄耀.上海长江隧道冻结监测优化设计及数据分析[J].地下空间与工程学报,2012,8(1):122-128.LI Pan,XIE Xiongyao.Research on Optimization of Freezing-temperature Monitoring Design and Method of Data Analysis in Shanghai Yangtze River Tunnel[J].Chinese Journal of Underground Space and Engineering,2012,8(1):122-128.
[10]胡俊.高水压砂性土层地铁大直径盾构始发端头加固方式研究[D].南京:南京林业大学,2012,6.HU Jun.Study on the Reinforcement Methods of Subway Large-diameter Shield Launching in the Sandy Clay with High Water Pressure[D].Nanjing:Nanjing Forestry University,2012,6.
[11]胡俊,刘勇,李玉萍.方形与圆形冻结管单管冻结温度场数值对比分析[J].森林工程,2015,31(4):152-157.HU Jun,LIU Yong,LI Yuping.Numerical Comparison of Temperature Fields Formed by Square-and Circular-shaped Freezing Pipes in Frozen Ground[J].Forest Engineering,2015,31(4):152-157.
[12]胡俊.水泥改良前后土体冻结温度及力学特性试验研究[J].铁道建筑,2013,18(4):156-159.HU Jun.Experimental study on freezing temperature and mechanical performance of soil before and after cement improving[J].Railway Engineering,2013,18(4):156-159.