季节冻土区吉图珲高铁东兴膨胀岩隧道保温防冻方法及分析
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摘要
隧道冻害与围岩中温度分布密切相关,因此掌握隧道围岩温度分布规律是防止隧道冻害的关键。以我国季节冻土区隧道建设发展为应用背景,依托于正在建设中的吉图珲高铁东兴膨胀岩隧道,结合东兴隧道特殊的工程地质与水文地质条件,在传统防冻方法基础上提出了一种改良的保温防冻新方法。通过监测施工期整个冻融循环过程中衬砌—围岩温度场,对比分析了传统防冻方法与改良防冻方法作用下围岩温度场的分布和变化规律。应用数值模拟方法,建立了东兴隧道衬砌—围岩温度场有限元模型,通过现场监测结果验证模型的有效性。进一步结合延吉地区东兴隧道当地气温预测运营期膨胀岩隧道围岩温度场分布,研究表明:运营期改良防冻方法比传统防冻方法具有更好的保温防寒作用。该研究可以作为季冻区隧道冻害防治措施的重要参考依据。
The frost damages in tunnel are closely related to the temperature distribution of surrounding rock. So it is the key to obtain temperature distribution of surrounding rock to prevent the frost damages in tunnel. This proposal is motivated by the development of the tunnel construction in cold regions. By relying on the construction of Dongxing swelling rock tunnel at the Jilin-Tumen-Hunchun high-speed railway,a proposed improved thermal insulation and anti-frost method based upon the traditional anti-frost method was developed,which is combined with the special engineering geological and hydrological conditions of this tunnel. The temperature field of lining-surrounding rock during the whole freeze-thaw cycle during the construction period is monitored on site,which provides a reference for comparison with the results of distribution and variation of temperature field in surrounding rock obtained from the traditional anti-frost method and improved thermal insulation and anti-frost method. Based on the numerical method,a finite element model of temperature field of lining-surrounding rock for the Dongxing swelling rock tunnel was established. The validation of this numerical modeling was verified by field measurement. With the temperature field distribution during the simulated operation period in Yanji,it is concluded that the improved frost prevention method has better thermal insulation and frost protection than the traditional frost prevention method.The conducted study provided useful help toward the process of prevention and control of frost damage in tunnel in seasonally frozen region.
The frost damages in tunnel are closely related to the temperature distribution of surrounding rock. So it is the key to obtain temperature distribution of surrounding rock to prevent the frost damages in tunnel. This proposal is motivated by the development of the tunnel construction in cold regions. By relying on the construction of Dongxing swelling rock tunnel at the Jilin-Tumen-Hunchun high-speed railway,a proposed improved thermal insulation and anti-frost method based upon the traditional anti-frost method was developed,which is combined with the special engineering geological and hydrological conditions of this tunnel. The temperature field of lining-surrounding rock during the whole freeze-thaw cycle during the construction period is monitored on site,which provides a reference for comparison with the results of distribution and variation of temperature field in surrounding rock obtained from the traditional anti-frost method and improved thermal insulation and anti-frost method. Based on the numerical method,a finite element model of temperature field of lining-surrounding rock for the Dongxing swelling rock tunnel was established. The validation of this numerical modeling was verified by field measurement. With the temperature field distribution during the simulated operation period in Yanji,it is concluded that the improved frost prevention method has better thermal insulation and frost protection than the traditional frost prevention method.The conducted study provided useful help toward the process of prevention and control of frost damage in tunnel in seasonally frozen region.
引文
[1]严浩.严寒地区运营铁路隧道温度场测试与数值模拟[D].石家庄铁道大学,2016.YAN Hao. Test and Numerical Simulation of Temperature Field in Cold Region Operational Railway Tunnel[D]. Shijiazhuang Tiedao University,2016.(in Chinese)
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[4]马启腾.高海拔高寒公路隧道的抗防冻技术研究[D].重庆交通大学,2018.MA Qiteng. Research on Anti-Freeze Technology of High-Altitude and Cold Region Highway Tunnel[D]. Chongqing Jiaotong University,2018.(in Chinese)
[5]潘晨月,刘秀,孟凡春.寒区隧道围岩温度场变化规律及防冻保温分析[J].公路,2018,63(05):326-331.PAN Chenyue,LIU Xiu,MENG Fanchun. The variation of temperature field of tunnel surrounding rock and the analysis of antifreeze and heat preservation in cold zone[J]. Highway,2018,63(05):326-331.(in Chinese)
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[8] Yoshimura J. Design for frost prevention in road tunnels:simplified design method for insulator between the outer and inner linings[C]∥Pro. of the Int. Congress on Tunnel and Underground Works Today and Future,1990:55-63.
[9]赖远明,吴紫汪,朱元林,等.大坂山隧道围岩冻融损伤的CT分析[J].冰川冻土,2000,22(3):206-210.LAI Yuanming,WU Ziwang,ZHU Yuanlin,et al. CT analysis of frost damage of the surrounding rocks of a tunnel in the Dabanmountain[J].Journal of Glaciolgy and Geocryology,2000,22(3):206-210.(in Chinese)
[10] Thomachot C,Matsuoka N,Kuchitsu N,et al. Frost damage of bricks composing a railway tunnel monument in Central Japan:field monitoring and laboratory simulation[J]. Natural Hazards and Earth System Science,2005,5(4):465-476.
[11] Asakura T,Kojima Y. Tunnel maintenance in Japan[J]. Tunnelling and Underground Space Technology,2003,18(2):161-169.
[12] T Mimouni F D L L. Estimating the geothermal potential of heat-exchanger anchors on a cut-and-cover tunnel[J]. Geothermics,2014,51(3):380-387.
[13]张亚兴.嘎隆拉隧道抗防冻及防排水技术的研究[D].重庆交通大学,2009.ZHANG Yaxing. Study on Frost Resistance,Anti-Freezing and Drainage Technology of the Galongla Tunnel[D]. Chongqing Jiaotong University,2009.(in Chinese)
[14]刘立军.寒冷地区隧道保温结构的研究[D].哈尔滨工业大学,2011.LIU Lijun. Research on The Structure of Insulation Tunnel in Cold Region[D]. Harbin Institute of Technology,2011.(in Chinese)
[15]陈善雄,余颂,孔令伟,等.膨胀土判别与分类方法探讨[J].岩土力学,2005,26(12):1895-1900.CHEN Shanxiong,YU Song,KONG Lingwei,et al. Study on approach to identification and classification of expansive soils[J]. Rock and Soil Mechanics,2005,26(12):1895-1900.(in Chinese)
[16]曾仲毅,徐帮树,胡世权,等.增湿条件下膨胀土隧道衬砌破坏数值分析[J].岩土力学,2014,35(3):871-880.ZENG Zhongyi,XU Bangshu,HU Shiquan,et al. Numerical analysis of tunnel liner failure mechanism in expansive soil considering water-increased state[J]. Rock and Soil Mechanics,2014,35(3):871-880.(in Chinese)
[17]吉哲.寒冷地区隧道冻害预防与处治技术研究[D].长安大学,2012.JI Zhe. Study on Technology of Cold Damage Prevention and Treatment of Tunnel in Cold Tegion[D]. Chang’an University,2012.(in Chinese)
[18]罗军.吉图珲高铁东兴隧道膨胀岩场地预留土柱施工方法研究[D].哈尔滨工业大学,2014.LUO Jun. Study on Srd Method of Dongxing Tunnel on Jinlin-Tumen-Hunchun High-Speed Railway Under Swelling Rock Field[D]. Harbin Institute of Technology,2014.(in Chinese)
[19]景远吉.寒区隧道围岩水热力耦合数值分析[D].西安科技大学,2017.JING Yuanji. The Moisture-Heat-Stress Coupling Numerical Analysis of The Tunnel Surrounding Rock in The Cold Regions[D]. Xi’an University of Science and Technology,2017.(in Chinese)
[20]金龑.吉图珲高铁东兴隧道冻害防治技术研究[D].哈尔滨工业大学,2014.JIN Yan. Anti-Freezing Technology of Dongxing Tunnel of Jinlin-Tumen-Hunchun High-Speed Railway[D]. Harbin Institute of Technology,2014.(in Chinese)
[2]陈建勋,罗彦斌.寒冷地区隧道温度场的变化规律[J].交通运输工程学报,2008,8(2):44-48.CHEN Jianxun,LUO Yanbin. Changing rules of temperature field for tunnel in cold area[J]. Journal of Traffic and Transportation Engineering,2008,8(2):44-48.(in Chinese)
[3]夏明.寒区隧道温度场数值分析研究[D].安徽理工大学,2018.XIA Ming. Numerical Analysis of Temperature Field in Cold Zone Tunnel[D]. Anhui University of Science&Technology,2018.(in Chinese)
[4]马启腾.高海拔高寒公路隧道的抗防冻技术研究[D].重庆交通大学,2018.MA Qiteng. Research on Anti-Freeze Technology of High-Altitude and Cold Region Highway Tunnel[D]. Chongqing Jiaotong University,2018.(in Chinese)
[5]潘晨月,刘秀,孟凡春.寒区隧道围岩温度场变化规律及防冻保温分析[J].公路,2018,63(05):326-331.PAN Chenyue,LIU Xiu,MENG Fanchun. The variation of temperature field of tunnel surrounding rock and the analysis of antifreeze and heat preservation in cold zone[J]. Highway,2018,63(05):326-331.(in Chinese)
[6] LAI J,QIU J,FAN H,et al. Freeze-proof method and test verification of a cold region tunnel employing electric heat tracing[J]. Tunnelling and Underground Space Technology,2016,60:56-65.
[7]吴紫汪,赖远明,臧恩穆,等.寒区隧道工程[M].海洋出版社,2003.WU Ziwang,LAI Yuanming,ZANG Enmu,et al. Tunnel Engineering in Cold Regions[M]. China Ocean Press,2003.(in Chinese)
[8] Yoshimura J. Design for frost prevention in road tunnels:simplified design method for insulator between the outer and inner linings[C]∥Pro. of the Int. Congress on Tunnel and Underground Works Today and Future,1990:55-63.
[9]赖远明,吴紫汪,朱元林,等.大坂山隧道围岩冻融损伤的CT分析[J].冰川冻土,2000,22(3):206-210.LAI Yuanming,WU Ziwang,ZHU Yuanlin,et al. CT analysis of frost damage of the surrounding rocks of a tunnel in the Dabanmountain[J].Journal of Glaciolgy and Geocryology,2000,22(3):206-210.(in Chinese)
[10] Thomachot C,Matsuoka N,Kuchitsu N,et al. Frost damage of bricks composing a railway tunnel monument in Central Japan:field monitoring and laboratory simulation[J]. Natural Hazards and Earth System Science,2005,5(4):465-476.
[11] Asakura T,Kojima Y. Tunnel maintenance in Japan[J]. Tunnelling and Underground Space Technology,2003,18(2):161-169.
[12] T Mimouni F D L L. Estimating the geothermal potential of heat-exchanger anchors on a cut-and-cover tunnel[J]. Geothermics,2014,51(3):380-387.
[13]张亚兴.嘎隆拉隧道抗防冻及防排水技术的研究[D].重庆交通大学,2009.ZHANG Yaxing. Study on Frost Resistance,Anti-Freezing and Drainage Technology of the Galongla Tunnel[D]. Chongqing Jiaotong University,2009.(in Chinese)
[14]刘立军.寒冷地区隧道保温结构的研究[D].哈尔滨工业大学,2011.LIU Lijun. Research on The Structure of Insulation Tunnel in Cold Region[D]. Harbin Institute of Technology,2011.(in Chinese)
[15]陈善雄,余颂,孔令伟,等.膨胀土判别与分类方法探讨[J].岩土力学,2005,26(12):1895-1900.CHEN Shanxiong,YU Song,KONG Lingwei,et al. Study on approach to identification and classification of expansive soils[J]. Rock and Soil Mechanics,2005,26(12):1895-1900.(in Chinese)
[16]曾仲毅,徐帮树,胡世权,等.增湿条件下膨胀土隧道衬砌破坏数值分析[J].岩土力学,2014,35(3):871-880.ZENG Zhongyi,XU Bangshu,HU Shiquan,et al. Numerical analysis of tunnel liner failure mechanism in expansive soil considering water-increased state[J]. Rock and Soil Mechanics,2014,35(3):871-880.(in Chinese)
[17]吉哲.寒冷地区隧道冻害预防与处治技术研究[D].长安大学,2012.JI Zhe. Study on Technology of Cold Damage Prevention and Treatment of Tunnel in Cold Tegion[D]. Chang’an University,2012.(in Chinese)
[18]罗军.吉图珲高铁东兴隧道膨胀岩场地预留土柱施工方法研究[D].哈尔滨工业大学,2014.LUO Jun. Study on Srd Method of Dongxing Tunnel on Jinlin-Tumen-Hunchun High-Speed Railway Under Swelling Rock Field[D]. Harbin Institute of Technology,2014.(in Chinese)
[19]景远吉.寒区隧道围岩水热力耦合数值分析[D].西安科技大学,2017.JING Yuanji. The Moisture-Heat-Stress Coupling Numerical Analysis of The Tunnel Surrounding Rock in The Cold Regions[D]. Xi’an University of Science and Technology,2017.(in Chinese)
[20]金龑.吉图珲高铁东兴隧道冻害防治技术研究[D].哈尔滨工业大学,2014.JIN Yan. Anti-Freezing Technology of Dongxing Tunnel of Jinlin-Tumen-Hunchun High-Speed Railway[D]. Harbin Institute of Technology,2014.(in Chinese)