软土地区浅埋偏压小净距隧道空间效应研究
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摘要
通过对本构破坏准则的探讨,选取Mohr-Coulomb等面积圆屈服理论作为模型的破坏准则,将岩体的c、φ值进行修正,使其更适合于软土地区浅埋偏压的小净距隧道,进而建立有限元三维弹塑性数值模型,对米家寨隧道空间效应进行模拟,研究软土体中浅埋偏压小净距隧道施工过程中开挖面的空间约束作用,并对其双线隧道开挖面的合理间距作出分析.以米家寨隧道为例,开挖面对纵向20m以内围岩具有一定的空间约束作用、30m以内围岩具显著的空间约束作用且塑性应变较大,左右线隧道开挖面纵向合理间距应控制在30m左右,通过Matlab计算机编程和再进行工地现场的监测,分析数据证实了所得结论的正确性,为实际的工程提供了理论依据.
The equivalent area circle yield theory such as Mohr-Coulomb was selected to do a model of the damage criteria by discussing the constitutive damage criteria.Meanwhile the rock of c,φ values was rectified to be more suitable for shallow soft soil area of small interval tunnel bias.Then the 3-D elastic-plastic finite element numerical model was created.It could simulate the spatial effect of Mijiazhai tunnel to study the space restraints of the cutting surface about shallow bias of soft soil in the process of tunnel construction,and the surface spacing of two-lane tunnel excavation was analyzed to be reasonable.Take Mijiazhai tunnel as an example,the excavation face has certain space restraints within on 20m vertical rock face,a significant role of space constraints and large plastic strain within 30m,and the excavation face is controlled to be a reasonable distance within 30m for left and right vertical line of tunnel.The conclusions are analyzed to confirm the correctness by Matlab programming and on-site testing,which provides a theoretical basis for actual projects.
The equivalent area circle yield theory such as Mohr-Coulomb was selected to do a model of the damage criteria by discussing the constitutive damage criteria.Meanwhile the rock of c,φ values was rectified to be more suitable for shallow soft soil area of small interval tunnel bias.Then the 3-D elastic-plastic finite element numerical model was created.It could simulate the spatial effect of Mijiazhai tunnel to study the space restraints of the cutting surface about shallow bias of soft soil in the process of tunnel construction,and the surface spacing of two-lane tunnel excavation was analyzed to be reasonable.Take Mijiazhai tunnel as an example,the excavation face has certain space restraints within on 20m vertical rock face,a significant role of space constraints and large plastic strain within 30m,and the excavation face is controlled to be a reasonable distance within 30m for left and right vertical line of tunnel.The conclusions are analyzed to confirm the correctness by Matlab programming and on-site testing,which provides a theoretical basis for actual projects.
引文
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[2]Xu Gan-cheng Zheng Ying-ren etc.Rock engineering applicationsof yield criterion[J].Journal of Geotechnical Engineering,1990,12(2):93-99.
[3]Stephen.D.Butt.Analysis of high frequency microseismicityrecordedgeophsics at an underground hard rock mine[J].Pureand Appllied Geophsics,1997(150):693-704.
[4]刘新荣,祝云华,陈金华,等.高压富水区隧道超前地质预报应用研究[J].地球物理学进展,2008,23(4):1304-1309.Liu Xin-rong,Zhu Yun-hua,ChenJing-hua etc.Research onthe application of advanced geological prediction to the highpressure and rich water in tunnels[J].Progress in Geophysics,2008,23(4):1304-1309.
[5]程辉,底青云,李帝铨.频率信号激励下岩石电性参数研究[J].地球物理学进展,2010,23(3):918-925.Cheng Hui,Di qing-yun,Li Di-quan.frequency signalincentive electrical parameters of rock under study[J].Progress in Geophysics,2010,23(3):918-925.
[6]赵永贵.国内外隧道超前预报技术评析与推介[J].地球物理学进展,2006,46(4):1114-1117.ZHAO Yong-gui.Analysis and recommendation of tunnelprediction techniques at home and abroad[J].Progress inGeophysics,2006,46(4):1114-1117.
[7]肖宽怀,刘浩,孙宇,等.地震CT勘探在昆石公路隧道病害诊断中的应用[J].地球物理学进展,2003,18(3):472-476.Xiao Kuang-huai,Liu Hao,Sun Yu,etc.Seismic tomographyused to examine geological hazar ding the tunnels ofKunming—Shilin highway[J].Progress In Geophysics,2003,18(3):472-476.
[8]李志华.某新建铁路复杂长隧道岩层地质与CSAMT特征[J].地球物理学进展,2005,45(4):632-636.LI Zhi-hua.Geology and CSAMT character of long complexrailway tunnel[J].Progress In Geophysics,2005,45(4):632-636.
[9]王齐仁,杨天春.隧道地质灾害超前预报的地震反射法[J].地球物理学进展,2006,21(2):643-649.Wang Qi-ren,Yang Tian-chun.The seismic reflection methodpredicting tunnel geological hazards[J].Progress InGeophysics,2006,21(2):643-649.
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[11]孙淑琴,赵义平,林君,等.用地面核磁共振方法评估含水层涌水量的实例[J].地球物理学进展,2009,23(4):1317-1321.Sun Shu-qin,Zhao Yi-ping,Lin Jun etc.With the nuclearmagnetic resonance method evaluate aquifer waterinflow ofexamples[J].Progress in Geophysics,2009,23(4):1317-1321.
[12]邓洪亮,谢向文,郭玉松.南水北调西线隧道中隐伏断层超前预报研究[J].地球物理学进展,2007,45(6):1002-1006.The study of geological forecast to deeply buried tunnel faultin south-north water transfer west route project[J].Progressin Geophysics,2007,45(6):1002-1006.
[13]孙英勋.CSAMT法在高速公路长大深埋隧道勘察中的应用研究[J].地球物理学进展,2005,44(4):1365-1369.SUN Ying-xun.Application of CSAMT electro magneticimage system in survey of deeply-buried long tunnels forexpressways[J].Progress in Geophysics,2005,44(4):1365-1369.
[14]公路隧道设计规范[S].JTG D70-2006,北京:人民交通出版社,2006.Highway tunnel design specification[S].JTG D70-2006,Beijing:peoples traffic press,2006.
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[16]刘招伟,何满潮,肖红渠.浅埋大跨连拱隧道施工中变形的监测与控制措施[J].岩土工程学报,2003,25(3):339-343.Liu Zhao-wei,He Man-chao,Xiao Hong-qu.Large spanmultiple-arch tunnel construction of monitoring and controlmeasures of deformation[J].Journal of geotechnicalengineering,2000,871(3):339-343.
[17]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):679-684.Zhou Yu-hong,Zhao Yan-ming,Cheng Chong-guo.Biasmultiple-arch tunnel construction process optimization[J].Journal of rock mechanics and engineering journal,2002,21(5):63-684.
[18]靳晓光,刘伟,郑学贵,等.小净距偏压公路隧道开挖顺序优化[J].公路交通科技,2005,22(08).Jin Xiao-guang,Liu Wei,Zheng Xue-gui etc.Small intervalDE highway tunnel excavation sequence optimization[J].Journal of highway traffic technology,2005,22(8).
[19]Katauhoko Arai etal.Estimation of Nonlinear Constitu-tiveParameters based on Monitored Movement of Subsiol underConsolidatcon.Soils and Foundation.Vol.27,No.1,1987.
[20]Vafacian M.Analysis of soil behavior during excavation ofshallow tunnel[J].Geotechnical engineering,1991,22920:257-267.
[21]郑颖人,赵尚毅,邓楚键,等.有限元极限分析法发展及其在岩土工程中的应用[J].中国工程科学2006,8(12):1120-1128.Zheng Ying-ren,Zhao Shang-yi,Deng Chu-jian,etc.Finiteelement limit analysis method development and application ingeotechnical engineering[J].China Engineering Science,2006,8(12):1120-1128.
[22]赵尚毅,时卫民,郑颖人.边坡稳定性分析的有限元法[J].地下空间,2001,21(5):450-454.Zhao Shang-yi,Shi Wei-min,Zheng Ying-ren.Slope stabilityanalysis of finite element method[J].Underground space,2001,21(5):450-454.
[23]徐干成郑颖人,等.岩石工程中屈服准则应用的研究[J].岩土工程学报,1990,12(2):93-99.Xu Gan-cheng Zheng Ying-ren etc.Rock engineeringapplications of yield criterion[J].Journal of GeotechnicalEngineering,1990,12(2)93-99.
[24]Holmeberg and P Persson.Design of tunnel perimeter blastholepatterns to prevent to prevent rock damage[J].Institution ofMining&Metallurgy,1980,89(6):27-32.
[25]Hoek.E.Big tunnels in bad rock.Journal of Geotechnicaland Geoenvironmental Engineering,vo1 27,n9,September,2001,726-740.
[26]刘元雪,蒋树屏,等.黄土连拱隧道两主洞开挖面合理间距研究[J].现代隧道技术,2006,43(03):6-10.LiuYuan-xue,JiangShuBing etc.multi-arch loess tunnel.Bothmain hole excavated plane reasonable spacing[J].Journal ofmodern technology tunnel,2006,43(03):6-10.
[2]Xu Gan-cheng Zheng Ying-ren etc.Rock engineering applicationsof yield criterion[J].Journal of Geotechnical Engineering,1990,12(2):93-99.
[3]Stephen.D.Butt.Analysis of high frequency microseismicityrecordedgeophsics at an underground hard rock mine[J].Pureand Appllied Geophsics,1997(150):693-704.
[4]刘新荣,祝云华,陈金华,等.高压富水区隧道超前地质预报应用研究[J].地球物理学进展,2008,23(4):1304-1309.Liu Xin-rong,Zhu Yun-hua,ChenJing-hua etc.Research onthe application of advanced geological prediction to the highpressure and rich water in tunnels[J].Progress in Geophysics,2008,23(4):1304-1309.
[5]程辉,底青云,李帝铨.频率信号激励下岩石电性参数研究[J].地球物理学进展,2010,23(3):918-925.Cheng Hui,Di qing-yun,Li Di-quan.frequency signalincentive electrical parameters of rock under study[J].Progress in Geophysics,2010,23(3):918-925.
[6]赵永贵.国内外隧道超前预报技术评析与推介[J].地球物理学进展,2006,46(4):1114-1117.ZHAO Yong-gui.Analysis and recommendation of tunnelprediction techniques at home and abroad[J].Progress inGeophysics,2006,46(4):1114-1117.
[7]肖宽怀,刘浩,孙宇,等.地震CT勘探在昆石公路隧道病害诊断中的应用[J].地球物理学进展,2003,18(3):472-476.Xiao Kuang-huai,Liu Hao,Sun Yu,etc.Seismic tomographyused to examine geological hazar ding the tunnels ofKunming—Shilin highway[J].Progress In Geophysics,2003,18(3):472-476.
[8]李志华.某新建铁路复杂长隧道岩层地质与CSAMT特征[J].地球物理学进展,2005,45(4):632-636.LI Zhi-hua.Geology and CSAMT character of long complexrailway tunnel[J].Progress In Geophysics,2005,45(4):632-636.
[9]王齐仁,杨天春.隧道地质灾害超前预报的地震反射法[J].地球物理学进展,2006,21(2):643-649.Wang Qi-ren,Yang Tian-chun.The seismic reflection methodpredicting tunnel geological hazards[J].Progress InGeophysics,2006,21(2):643-649.
[10]石建勋,刘新荣,刘元锋.隐块体在连拱隧道工程中引起的灾害[J].地球物理学进展,2010,25(6):2199-2203.SHI Jian-xun,LIU Xin-rong,LIU Yuan-feng.Hazardscaused by hidden blocks in multi-arch tunnel[J].Progress inGeophysics,2010,25(6):2199-2203.
[11]孙淑琴,赵义平,林君,等.用地面核磁共振方法评估含水层涌水量的实例[J].地球物理学进展,2009,23(4):1317-1321.Sun Shu-qin,Zhao Yi-ping,Lin Jun etc.With the nuclearmagnetic resonance method evaluate aquifer waterinflow ofexamples[J].Progress in Geophysics,2009,23(4):1317-1321.
[12]邓洪亮,谢向文,郭玉松.南水北调西线隧道中隐伏断层超前预报研究[J].地球物理学进展,2007,45(6):1002-1006.The study of geological forecast to deeply buried tunnel faultin south-north water transfer west route project[J].Progressin Geophysics,2007,45(6):1002-1006.
[13]孙英勋.CSAMT法在高速公路长大深埋隧道勘察中的应用研究[J].地球物理学进展,2005,44(4):1365-1369.SUN Ying-xun.Application of CSAMT electro magneticimage system in survey of deeply-buried long tunnels forexpressways[J].Progress in Geophysics,2005,44(4):1365-1369.
[14]公路隧道设计规范[S].JTG D70-2006,北京:人民交通出版社,2006.Highway tunnel design specification[S].JTG D70-2006,Beijing:peoples traffic press,2006.
[15]铁路隧道设计规范[S].TB10003-2005,北京:中国铁道出版社,2005.Railway tunnel design specification[S].TB 10003-2005,Beijing:China railway press,2005.
[16]刘招伟,何满潮,肖红渠.浅埋大跨连拱隧道施工中变形的监测与控制措施[J].岩土工程学报,2003,25(3):339-343.Liu Zhao-wei,He Man-chao,Xiao Hong-qu.Large spanmultiple-arch tunnel construction of monitoring and controlmeasures of deformation[J].Journal of geotechnicalengineering,2000,871(3):339-343.
[17]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):679-684.Zhou Yu-hong,Zhao Yan-ming,Cheng Chong-guo.Biasmultiple-arch tunnel construction process optimization[J].Journal of rock mechanics and engineering journal,2002,21(5):63-684.
[18]靳晓光,刘伟,郑学贵,等.小净距偏压公路隧道开挖顺序优化[J].公路交通科技,2005,22(08).Jin Xiao-guang,Liu Wei,Zheng Xue-gui etc.Small intervalDE highway tunnel excavation sequence optimization[J].Journal of highway traffic technology,2005,22(8).
[19]Katauhoko Arai etal.Estimation of Nonlinear Constitu-tiveParameters based on Monitored Movement of Subsiol underConsolidatcon.Soils and Foundation.Vol.27,No.1,1987.
[20]Vafacian M.Analysis of soil behavior during excavation ofshallow tunnel[J].Geotechnical engineering,1991,22920:257-267.
[21]郑颖人,赵尚毅,邓楚键,等.有限元极限分析法发展及其在岩土工程中的应用[J].中国工程科学2006,8(12):1120-1128.Zheng Ying-ren,Zhao Shang-yi,Deng Chu-jian,etc.Finiteelement limit analysis method development and application ingeotechnical engineering[J].China Engineering Science,2006,8(12):1120-1128.
[22]赵尚毅,时卫民,郑颖人.边坡稳定性分析的有限元法[J].地下空间,2001,21(5):450-454.Zhao Shang-yi,Shi Wei-min,Zheng Ying-ren.Slope stabilityanalysis of finite element method[J].Underground space,2001,21(5):450-454.
[23]徐干成郑颖人,等.岩石工程中屈服准则应用的研究[J].岩土工程学报,1990,12(2):93-99.Xu Gan-cheng Zheng Ying-ren etc.Rock engineeringapplications of yield criterion[J].Journal of GeotechnicalEngineering,1990,12(2)93-99.
[24]Holmeberg and P Persson.Design of tunnel perimeter blastholepatterns to prevent to prevent rock damage[J].Institution ofMining&Metallurgy,1980,89(6):27-32.
[25]Hoek.E.Big tunnels in bad rock.Journal of Geotechnicaland Geoenvironmental Engineering,vo1 27,n9,September,2001,726-740.
[26]刘元雪,蒋树屏,等.黄土连拱隧道两主洞开挖面合理间距研究[J].现代隧道技术,2006,43(03):6-10.LiuYuan-xue,JiangShuBing etc.multi-arch loess tunnel.Bothmain hole excavated plane reasonable spacing[J].Journal ofmodern technology tunnel,2006,43(03):6-10.
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