桑树湾隧道四级围岩水平岩层防塌施工技术 曹康俊

:1009-6825(2010)04-0301-02Ó:2009-10-22:(1976-),,,,710021曹康俊:通过包西通道桑树湾隧道水平岩层的施工,总结了施工方法及施工经验,探讨了有关水平岩层隧道塌方的预防措施,指出要保证水平岩层隧道的施工安全,关键在于:控制开挖进尺,加强初期支护,坚持超前地质预报,监控量测:隧道围岩,塌方,格栅拱架,喷锚支护:U455:A112km,DK598+359~DK603+525(DK603+100,11.98m),5177.98m,,200m,,,,,,2b~7b,()80m2Ó,93%22.1发生塌方的原因2.1.11)))),,2),,,,3),,,,,,,,,4),,,,,,5),,,,,2.1.21),,,,,2)Ó3)2.2水平岩层塌方的特点2~3,30m~50m,,,,,,,35m,5m~8m,2m~3m2.3塌方前的预兆1)2),,3),4),,5)0.2mm/d0.1mm/d,,,,33.1超前地质预报,,,TSP202,TSP203;,,,,,:[1]GB50308-2008,地下铁道轻轨交通工程测量规范[S].[2]同济大学应用数学系.高等数学[M].北京:高等教育出版社,2003.[3]李青岳,陈永奇.工程测量学[M].北京:测绘出版社,2008.DesignofshieldtunnelcenterlinecoordinatecalculationbasedonVBACHENShan-yunAbstract:Itfirstanalyzesmodeloftracktrafficshieldcenterroad,respectivelycalculatesfreethreedimensionalcoordinateofallmodels,thenprogramsanddesignsbasedonVBAExcel,finallytakesthefirstlinetwenty-secondshieldonHangzhousubwayasexampletocalculate,provesthatthismodelcalculationschemeisfeasibleandeffectiveformethodofcalculatingofshieldimprovementcentercoordinate.Keywords:shieldcenter,linemodel,VBA#301#第36卷第4期2010年2月山西建筑SHANXIARCHITECTUREVol.36No.4Feb.2010,,3.2控制好开挖进尺及采用合理的爆破方案1),2)3),4),5),6),/0,7)2.4m(2),,3.3拱部设置格栅拱架1)(),a.(),,,,,;,,150b,1b.(),,,,,;,,150b,,180b,22)(),,(),,,,,,;,,,,33),Ó,,3.4喷锚支护施工工艺1)22mm,,,,,2),,,,,,?3cm,2cm46h~8h,,,,,2.4m,,,,,,,,;,,;,520088~10,30m,,150m,,,,/,0:[1]冯靖,田斌,郭建.客运专线大断面软弱围岩隧道塌方预防与整治技术[J].铁道标准设计,2007(sup):1.[2]李新皇.浅谈大窝山隧道进口段软弱围岩短台阶施工[J].山西建筑,2008,34(33):327-328.Onhorizontalstratumant-isloughingconstructiontechnologyinÓdegreesurroundingrockofSangshuwantunnelCAOKang-junAbstract:AccordingtotheconstructionofthehorizontalstratuminSangshuwantunnelalongBao-Xipassageway,thepapersumsupthecon-structionmethodandexperience,exploresthepreventivemeasurestotherelativetunnelcollapseinhorizontalstratum,andpointsoutthewaystoensuretheconstructionsafetyofhorizontalstratumtunnels,andthekeyarethecontroloftheexcavationprocess,improvementofprimarysupport,theforecastreportofgeologyandthesupervisionsurvey.Keywords:tunnelsurroundingrock,collapse,grillagesupportingarch,lockboltsupport#302#第36卷第4期2010年2月山西建筑