高速公路隧道水平层状围岩支护优化
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摘要
为了及时预防公路隧道穿越水平岩层施工过程中极易出现的平拱、拱顶离层破坏、拱顶弯折内鼓等危害现象,确定合理的支护方案,结合广元—巴中高速公路某穿越水平岩层隧道,根据现场跟踪调查和试验,在对围岩岩性、物理力学性质、地层结构和变形破坏类型等进行分析的基础上,对原洞身围岩质量分级结果进行了调整,对原支护设计方案进行了优化,并利用数值模拟方法验证了其合理性。同时,施工后拱顶下沉及周边收敛监测结果显示,围岩变形完全满足要求,进一步证明了支护优化设计合理,效果明显。
In order to take precautions against and deal with the hazard appearance of flat arch,separation layer destruction and flexing and inside-drum of arch crown,etc.,and to determine rational supporting project,combined with the site tracing survey and examination to the horizontal bedded surrounding rock tunnel of Guangyuan-Bazhong Expressway,the original surrounding rock grade was adjusted and former support design project was optimized under the foundation of analyzing the surrounding rock lithologic characters,physical and mechanical properties,stratum structures and types of deformations and destructions.Using numerical simulation method,authors analyzed the rationality of former support design project.At the same time,the monitored results of arch crown subsidence and peripheral convergence show that the distortions are all satisfactory.It is proved once again that the support optimum design is appropriate,and the effect of optimum support is obvious.
In order to take precautions against and deal with the hazard appearance of flat arch,separation layer destruction and flexing and inside-drum of arch crown,etc.,and to determine rational supporting project,combined with the site tracing survey and examination to the horizontal bedded surrounding rock tunnel of Guangyuan-Bazhong Expressway,the original surrounding rock grade was adjusted and former support design project was optimized under the foundation of analyzing the surrounding rock lithologic characters,physical and mechanical properties,stratum structures and types of deformations and destructions.Using numerical simulation method,authors analyzed the rationality of former support design project.At the same time,the monitored results of arch crown subsidence and peripheral convergence show that the distortions are all satisfactory.It is proved once again that the support optimum design is appropriate,and the effect of optimum support is obvious.
引文
[1]张倬元,王士天,王兰生.工程地质分析原理[M].北京:地质出版社,1981.ZHANG Zhuo-yuan,WANG Shi-tian,WANG Lan-sheng.Principles of Engineering Geology[M].Bei-jing:Geological Publishing House,1981.
[2]张勇,张子新,华安增.高速公路隧道的围岩变形特性[J].中南公路工程,2001,26(3):12-14.ZHANG Yong,ZHANG Zi-xin,HUA An-zeng.TheWall Rock Deformation Characteristics of HighwayTunnel[J].Central South Highway Engineering,2001,26(3):12-14.
[3]刘劲勇.连拱隧道围岩与支护结构稳定性研究[D].武汉:武汉理工大学,2005.LIU Jin-yong.Study on the Stability of Wall Rock andSupport Structures of Multiple Arch Tunnel[D].Wu-han:Wuhan University of Technology,2005.
[4]林刚,何川.双连拱公路隧道支护结构体系试验研究[J].西南交通大学学报,2004,39(3):362-365.LIN Gang,HE Chuan.Experiments of Support Struc-ture of Twin-bore Highway Tunnel[J].Journal ofSouthwest Jiaotong University,2004,39(3):362-365.
[5]KAWAMOTO T,ICHIKAWA Y,KYOYA T.De-formation and Fracturing Behavior of DiscontinuousRock Mass and Damage Mechanics Theory[J].Int JNum Analy Geo,1988,12(4):321-327.
[6]胡世斌.通渝隧道围岩分类[J].西部探矿工程,2005(3):106-107.HU Shi-bin.The Categorization of Surrounding Rocksin Tongyu Tunnel[J].West-China Exploration Engin-eering,2005(3):106-107.
[7]朱晓宁,王惠勇.隧道围岩开挖稳定性等级综合评判实用方法研究[J].中南公路工程,2005,30(2):48-51.ZHU Xiao-ning,WANG Hui-yong.Practical Methodfor Grade Evaluation on Excavated Tunnel Wall Rock[J].Central South Highway Engineering,2005,30(2):48-51.
[8]陈建勋,欧阳院平,王明年.公路隧道复合式衬砌结构数值计算及分析[J].中国公路学报,2006,19(2):74-79.CHEN Jian-xun,OUYANG Yuan-ping,WANGMing-nian.Numerical Computing and Analysis ofHighway Tunnel Composite Lining Structure[J].China Journal of Highway and Transport,2006,19(2):74-79.
[9]陈建勋,李建安.公路隧道二次衬砌厚度的优化[J].交通运输工程学报,2006,6(3):68-72.CHEN Jian-xun,LI Jian-an.Secondary Lining Thick-ness Optimization of Road Tunnel[J].Journal ofTraffic and Transportation Engineering,2006,6(3):68-72.
[10]来弘鹏,谢永利,杨晓华.不同应力场软弱围岩公路连拱隧道力学特征试验[J].长安大学学报:自然科学版,2008,28(6):60-64.LAI Hong-peng,XIE Yong-li,YANG Xiao-hua.Mod-el Tests for Soft-weak Surrounding Rocks HighwayMultiple-arch Tunnel Stress Characteristics in Differ-ent Stress Fields[J].Journal of Chang an University:Natural Science Edition,2008,28(6):60-64.
[11]吕远强,苏生瑞,安光明,等.云南思小高速公路白花山隧道围岩稳定性研究[J].地球科学与环境学报,2005,27(2):86-89.LU Yuan-qiang,SU Sheng-rui,AN Guang-ming,et al.Surrounding Rock Stabilization of BaihuashanTunnel of Si-Xiao Expressway in Yunnan Province[J].Journal of Earth Sciences and Environment,2005,27(2):86-89.
[12]李云鹏,王芝银,韩常领,等.考虑地震影响的小间距隧道围岩流变损伤[J].长安大学学报:自然科学版,2006,26(2):51-56.LI Yun-peng,WANG Zhi-yin,HAN Chang-ling,et al.Rheologic Damage and Earthquake Influence onSurrounding Rock of Small Spacing Tunnels[J].Jour-nal of Chang an University:Natural Science Edition,2006,26(2):51-56.
[13]JTG D70—2004,公路隧道设计规范[S].JTG D70—2004,Code for Design of Road Tunnel[S].
[14]周玉宏,赵燕明,程崇国.偏压连拱隧道施工过程的优化研究[J].岩石力学与工程学报,2002,21(5):679-683.ZHOU Yu-hong,ZHAO Yan-ming,CHENG Chong-guo.Optimum Analysis on the Construction Processfor Joint Arch Tunnels in Partial Pressure[J].Chinese Journal of Rock Mechanics and Engineering,2002,21(5):679-683.
[2]张勇,张子新,华安增.高速公路隧道的围岩变形特性[J].中南公路工程,2001,26(3):12-14.ZHANG Yong,ZHANG Zi-xin,HUA An-zeng.TheWall Rock Deformation Characteristics of HighwayTunnel[J].Central South Highway Engineering,2001,26(3):12-14.
[3]刘劲勇.连拱隧道围岩与支护结构稳定性研究[D].武汉:武汉理工大学,2005.LIU Jin-yong.Study on the Stability of Wall Rock andSupport Structures of Multiple Arch Tunnel[D].Wu-han:Wuhan University of Technology,2005.
[4]林刚,何川.双连拱公路隧道支护结构体系试验研究[J].西南交通大学学报,2004,39(3):362-365.LIN Gang,HE Chuan.Experiments of Support Struc-ture of Twin-bore Highway Tunnel[J].Journal ofSouthwest Jiaotong University,2004,39(3):362-365.
[5]KAWAMOTO T,ICHIKAWA Y,KYOYA T.De-formation and Fracturing Behavior of DiscontinuousRock Mass and Damage Mechanics Theory[J].Int JNum Analy Geo,1988,12(4):321-327.
[6]胡世斌.通渝隧道围岩分类[J].西部探矿工程,2005(3):106-107.HU Shi-bin.The Categorization of Surrounding Rocksin Tongyu Tunnel[J].West-China Exploration Engin-eering,2005(3):106-107.
[7]朱晓宁,王惠勇.隧道围岩开挖稳定性等级综合评判实用方法研究[J].中南公路工程,2005,30(2):48-51.ZHU Xiao-ning,WANG Hui-yong.Practical Methodfor Grade Evaluation on Excavated Tunnel Wall Rock[J].Central South Highway Engineering,2005,30(2):48-51.
[8]陈建勋,欧阳院平,王明年.公路隧道复合式衬砌结构数值计算及分析[J].中国公路学报,2006,19(2):74-79.CHEN Jian-xun,OUYANG Yuan-ping,WANGMing-nian.Numerical Computing and Analysis ofHighway Tunnel Composite Lining Structure[J].China Journal of Highway and Transport,2006,19(2):74-79.
[9]陈建勋,李建安.公路隧道二次衬砌厚度的优化[J].交通运输工程学报,2006,6(3):68-72.CHEN Jian-xun,LI Jian-an.Secondary Lining Thick-ness Optimization of Road Tunnel[J].Journal ofTraffic and Transportation Engineering,2006,6(3):68-72.
[10]来弘鹏,谢永利,杨晓华.不同应力场软弱围岩公路连拱隧道力学特征试验[J].长安大学学报:自然科学版,2008,28(6):60-64.LAI Hong-peng,XIE Yong-li,YANG Xiao-hua.Mod-el Tests for Soft-weak Surrounding Rocks HighwayMultiple-arch Tunnel Stress Characteristics in Differ-ent Stress Fields[J].Journal of Chang an University:Natural Science Edition,2008,28(6):60-64.
[11]吕远强,苏生瑞,安光明,等.云南思小高速公路白花山隧道围岩稳定性研究[J].地球科学与环境学报,2005,27(2):86-89.LU Yuan-qiang,SU Sheng-rui,AN Guang-ming,et al.Surrounding Rock Stabilization of BaihuashanTunnel of Si-Xiao Expressway in Yunnan Province[J].Journal of Earth Sciences and Environment,2005,27(2):86-89.
[12]李云鹏,王芝银,韩常领,等.考虑地震影响的小间距隧道围岩流变损伤[J].长安大学学报:自然科学版,2006,26(2):51-56.LI Yun-peng,WANG Zhi-yin,HAN Chang-ling,et al.Rheologic Damage and Earthquake Influence onSurrounding Rock of Small Spacing Tunnels[J].Jour-nal of Chang an University:Natural Science Edition,2006,26(2):51-56.
[13]JTG D70—2004,公路隧道设计规范[S].JTG D70—2004,Code for Design of Road Tunnel[S].
[14]周玉宏,赵燕明,程崇国.偏压连拱隧道施工过程的优化研究[J].岩石力学与工程学报,2002,21(5):679-683.ZHOU Yu-hong,ZHAO Yan-ming,CHENG Chong-guo.Optimum Analysis on the Construction Processfor Joint Arch Tunnels in Partial Pressure[J].Chinese Journal of Rock Mechanics and Engineering,2002,21(5):679-683.
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