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Safetymanagementintunnelconstruction:CasestudyofWuhanmetroconstructioninChinaAuthor：MiroslawJ.SkibniewskiLieyunDing,etalReporter:WuTong-gangCentralSouthUniversityNewwordsShaft:通风井Grouting:灌浆，给…灌浆High-pressurejetgroutingpiles(HJGP):高压喷射灌浆柱Siltyclay:粉质黏土Tunnelboringmachine(TBM):隧道掘进机Gush:涌出Double-spool:双轴OutlinePART1IntroductionPART2MethodPART3ResultsPART4ConclusionIntroduction1.1BackgroundShieldtunnelingtechnologyAdvantagesDisadvantages1.Highlevelofmechanization1.Largescale2.Fastprogressionoftunnelingworks2.Longduration3.Lesserenvironmentalimpact3.Complextechnicalissues1.2ObjectiveTheprimaryaimsofthisstudyweretoinvestigate:OverallProcessSafetyManagement(OPSM)intunnelconstruction.iiiiAreal-timeupdateofbothenvironmentalparametersandcontrolmeasures.iiAmorereasonablesolutionforthewaterproofingandreinforcingworks.1.3ProjectprofileWuhanYangtzeMetroTunnel(WYMT)Characteristics:1.Double-spooltunnelconnectingtwolargecities2.Twosetsofventilationshafts3.Acurveradiusof350mandanextremelyclosedistanceawayfromYangtzeRiver4.FinesandstoneandsiltyclayMethodWaterproofingGroundfreezingLoweringofwaterlevelmethodReinforcing1.Thecementpastetendstobewashedawaybytheflowingwater,resultinginpoorreinforcement.Ahigh-pressurejetgrouting2.1Safetysystemdesign2.NosignificantwaterproofingresultswouldbeachievedduetothecloseproximitytotheYangtzeRiver.2.1SafetysystemdesignGroundheterog-eneityConstru-ctionmethodsSoilstructureinteract-ionNon-linearbehaviorofsoils2.2SafetyanalysisSystemicsafetyEconomicrequirementsNumericalsimulationANSYS2.3Safetycontrolprocess2.3.1ReinforcementcontrolItemsCheckingmethodsCheckingcriteriaReinforcedsoilstrengthDrilltoobtaintwocoresoneachsidedeepintotheexcavationbottomfivemilesawayfromthetunnelaxis,andthenconductthecoretest.=1MpaReinforcedsoilpermeabilityDrillfourholeswell-distributedaroundtheexcavationregion,andthentestthepermeabilityofeachhole.=1m3/dReinforcedsoilhomogeneityDrilltoobtainfourcoreswell-distributedaroundtheexcavationregion,andthentestthehomogeneityofeachcore.Uniformity2.3Safetycontrolprocess2.3.2FreezingcontrolLayoutoffreezingholesWorkersareexaminingthefreezingeffect.2.3Safetycontrolprocess2.3.3UCWremovingcontrolWorkersarecuttingdownthesteelwithinUCW.Workersarepastingquiltsontotheworkfaceofthetunnelportal.Results3Results3Resultsabca:Distributionofcompressivestressb:Distributionoftensilestressc:DistributionofshearstressConclusionConclusion1Treatschemesforwaterproofingandreinforcingworks2BoringattitudecontrolofTBM3NumericalanalysesCombinefreezingmethodandHJGPIncludethepreliminarydeviationaheadofthedrillingprocessApplynumericalsimulationbyANSYSQuestion-invitingLOGOHERETHANKYOU!PRESENTEDBYWuTong-gang