港珠澳大橋英語演講

港珠澳大橋英語演講第1頁/共16頁Contents4、TheImmersedTubeTunnel2、FeaturesandDifficulties5、TheSignificances

1、BriefIntroduction3、TwoArtificialIslands第2頁/共16頁3.工程總體方案Thefirstmajorcombinedbridgeandtunnelsea-crossingprojectinChina.CostapproximatelyRMB105billion.Constructionbeganin15December2009atZhuhai.WillreducetraveltimefromHongKongtoMacauorZhuhaifromoverthreehourstojusthalfanhour.第3頁/共16頁1.BriefIntroductionHongKong–Zhuhai–MacauBridge:theworld`slongestsea-crossingbridge,oneofthemostchallengingconstructionsofitskindundertakenintheworldtodate.第4頁/共16頁TwoartificialislandsAnimmersedtubetunnelTheY-shapedbridge1.BriefIntroduction第5頁/共16頁Totallenght:49.97kilometersUnderwatertunnel:6.7kilometersBridgeoverthesea:23kilometersMacauLinkRoadZhuhaiLinkRoadOffshoreBridge-and-TunnelHKLinkRoadHKport1.BriefIntroduction第6頁/共16頁1.thelifespanofthebridgeissetat120years.2.Itreportedlycanstandmagnitude-8earthquake,scale-16typhoonaswellasthecollisionwitha300,000-tonship1.BriefIntroduction第7頁/共16頁thisprojectfeaturesadesign-and-buildcontract,coordinationofthethreeregionalgovernmentsintheconstructionandmanagement,andcloseattentionfromthesociety.Moreover,thereareenvironmentalconstraintsasthealignmentrunsacrossthenationalconservationareafortheChinesewhitedolphins,aswellascomplicatednavigationtrafficconditionsastheroutecrossesthebusiestshippingareaoftheLingdingSea.2.FeaturesandDifficulties第8頁/共16頁HongKong-Zhuhai-MacaoBridgeisthenationalkeyprojectfeaturedwithstrategicsignificance,largeinvolvement,highlydifficultlevelofconstruction,longconstructiontime,highrequirementontechnicaldesignandenvironmentalprotection,manyparticipantparties,complexmanagementandcoordination.2.FeaturesandDifficulties第9頁/共16頁3.TwoArtificialIslandstheWestArtificialIslandtheEastArtificialIsland第10頁/共16頁TheEastIslandhas59roundsteelcylinders圓鋼筒.TheWestIslandhas61roundsteelcylinders.Thediameterofasinglecylinderis22.0m,andthecylinderwallis16mmthick.Theheightofroundsteelcylinderis40.5mto50.5m.Theroundsteelcylinderweighs445tto507t.3.TwoArtificialIslands第11頁/共16頁4.TheImmersedTubeTunnel第12頁/共16頁Thewaterresistanceratiomustbelimitedto10%topreventaccumulationofsedimentattheLingdingyangChannel,otherwiseitwillimposeseriousimpactonthePearlRiverflowpathandflood-dischargecapacity,accordingtoagovernmentreport.Duetothelongdistancesbetweenthecities,theprojectisactuallyaseriesofbridgesandtunnels,connectedbyartificialislands，thiswasthefirsttimeChinahasbuiltanimmersedtubetunnel（沉管隧道）inopenwaters.The33tubeswillcomposea5.6-kilometerimmersed-tubetunnel,whichisdesignedtobeanimportantpartofthebridge.Eachofthetube,withaweightof80,000tonsandalengthof180meters,takesabouttwomonthstobuild.4.TheImmersedTubeTunnel第13頁/共16頁5.TheSignificancesBritishnewspaper“TheGuardian”namedthemegastructureoneofits“sevenwondersofthemodernworldnearcompletion.”ItwillbethefirstnewlandtransportlinkbetweentheeastandwestcoastsofthePearlRiver,ThebridgewillbenefittheeconomicdevelopmentofthewholeoftheDelta.Thebridgewillcreatearegionaltransportn