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1、Safetymanagementintunnelconstruction CasestudyofWuhanmetroconstructioninChina Author MiroslawJ SkibniewskiLieyunDing etalReporter WuTong gangCentralSouthUniversity Newwords Shaft 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 spo
2、ol 双轴 Introduction 1 1 1Background Shieldtunnelingtechnology 1 2Objective 1 3Projectprofile WuhanYangtzeMetroTunnel WYMT Characteristics Double spooltunnelconnectingtwolargecitiesTwosetsofventilationshaftsAcurveradiusof350mandanextremelyclosedistanceawayfromYangtzeRiver4 Finesandstoneandsiltyclay Me
3、thod 2 Waterproofing Groundfreezing Loweringofwaterlevelmethod Reinforcing 1 Thecementpastetendstobewashedawaybytheflowingwater resultinginpoorreinforcement Ahigh pressurejetgrouting 2 1Safetysystemdesign 2 NosignificantwaterproofingresultswouldbeachievedduetothecloseproximitytotheYangtzeRiver 2 1Sa
4、fetysystemdesign Groundheterog eneity Constru ctionmethods Soilstructureinteract ion Non linearbehaviorofsoils 2 2Safetyanalysis Systemicsafety Economicrequirements Numericalsimulation ANSYS 2 3Safetycontrolprocess 2 3 1Reinforcementcontrol 2 3Safetycontrolprocess 2 3 2Freezingcontrol Layoutoffreezi
5、ngholes Workersareexaminingthefreezingeffect 2 3Safetycontrolprocess 2 3 3UCWremovingcontrol WorkersarecuttingdownthesteelwithinUCW Workersarepastingquiltsontotheworkfaceofthetunnelportal Results 3 3Results 3Results a b c a Distributionofcompressivestressb Distributionoftensilestressc Distributionofshearstress Conclusion 4 Conclusion CombinefreezingmethodandHJGP Includethepreliminarydeviationaheadofthedrillingprocess ApplynumericalsimulationbyANSYS Question inviting 5 LOGOHERE THANKYOU PRESENTEDBYWuTong gang
