国际会议汇报ppt(英文)教学文稿.ppt

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1、国际会议汇报ppt(英文)OutlinePART1IntroductionPART2MethodPART3ResultsPART4ConclusionIntroduction11.1BackgroundShieldtunnelingtechnologyAdvantagesDisadvantages1.Highlevelofmechanization1.Largescale2.Fastprogressionoftunnelingworks2.Longduration3.Lesserenvironmentalimpact3.Complextechnicalissues1.2Object

2、iveTheprimaryaimsofthisstudyweretoinvestigate:OverallProcessSafetyManagement(OPSM)intunnelconstruction.iiiiAreal-timeupdateofbothenvironmentalparametersandcontrolmeasures.iiAmorereasonablesolutionforthewaterproofingandreinforcingworks.1.3ProjectprofileWuhanYangtzeMetroTunnel(WYMT)Characteristi

3、cs:Double-spooltunnelconnectingtwolargecitiesTwosetsofventilationshaftsAcurveradiusof350mandanextremelyclosedistanceawayfromYangtzeRiver4.FinesandstoneandsiltyclayMethod2WaterproofingGroundfreezingLoweringofwaterlevelmethodReinforcing1.Thecementpastetendstobewashedawaybytheflowingwater,resulti

4、nginpoorreinforcement.Ahigh-pressurejetgrouting2.1Safetysystemdesign2.NosignificantwaterproofingresultswouldbeachievedduetothecloseproximitytotheYangtzeRiver.2.1SafetysystemdesignGroundheterog-eneityConstru-ctionmethodsSoilstructureinteract-ionNon-linearbehaviorofsoils2.2SafetyanalysisSystemic

5、safetyEconomicrequirementsNumericalsimulationANSYS2.3Safetycontrolprocess2.3.1ReinforcementcontrolItemsCheckingmethodsCheckingcriteriaReinforcedsoilstrengthDrilltoobtaintwocoresoneachsidedeepintotheexcavationbottomfivemilesawayfromthetunnelaxis,andthenconductthecoretest.>=1MpaReinforcedsoilper

6、meabilityDrillfourholeswell-distributedaroundtheexcavationregion,andthentestthepermeabilityofeachhole.<=1m3/dReinforcedsoilhomogeneityDrilltoobtainfourcoreswell-distributedaroundtheexcavationregion,andthentestthehomogeneityofeachcore.Uniformity2.3Safetycontrolprocess2.3.2FreezingcontrolLayout

7、offreezingholesWorkersareexaminingthefreezingeffect.2.3Safetycontrolprocess2.3.3UCWremovingcontrolWorkersarecuttingdownthesteelwithinUCW.Workersarepastingquiltsontotheworkfaceofthetunnelportal.Results33Results3Resultsabca:Distributionof