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72/2007MODERNURBANTRANSIT8MODERNURBANTRANSIT2/200792/2007MODERNURBANTRANSIT10MODERNURBANTRANSIT2/2007ABSTRACTSThoughttoPrepareStandardsforMetroOperationSafetyAssess-mentWangJuan3StandardsforMetroOperationSafetyAssessmentispreparedtoobtainanoveralljudgmentandassessmentofthegeneralsafetycon-ditionoftheexistingmetrooperationsystems,topreventandcontrolvariousrisks,andtoimprovethegeneralsafetylevelofmetrosystem.Communication-basedTrainControlSystemGaoChunhai7Inregardtotheconfiguration,keytechnologies,characteristicsanddevelopmentorientationofcommunication-basedtraincontrolsystem(CBTC),thispaperputsforwardtheideatotakethespecifi-cationandstandardofthesystemasthecoreofCBTCstudy,theCOTStechnologyastheimportantpathforsystemdevelopment,andthesafetystandard,thecertificationandtheevaluationsystemastheassuranceforpromotionofCBTCdevelopmentandapplication.IntroductionandProspectofCommunicationBackboneforRailTransitSystemsinGuangzhouZhaoNanying11Thispaperpresentstheconfiguration,thefunctions,theoperation,thedesignselection,andprospectsofthecommunicationbackbonefortherailtransitsystemsinGuangzhou.ArrangementoftheSafeDoorsintheStationsLiFan14Thispaperpresentsadiscussiononthearrangementofthesafedoorsforthedifferentpassengertransportationsystemsinlightofthecurrentdevelopmentofthepassengerdedicatedlinesandregionalinter-cityrailways.CopperAlloyContactWireforHighSpeedRailwaysJiangYongyan18Thispaperpresentsthecharacteristicsofvariouskindsofcopperalloyandmaterialselectionforcontactwireforhighspeedelectri-fiedrailways.EffectofPhase-SequenceDifferenceonDifferentialProtectionfor35kVCableLineanditsEliminationSongJianwei24Thispaperputsforwardtheeffectofphasesequencedifferenceondifferentialprotectionfor35kVcablelineandthenecessitytoelimi-natethephasesequencedifferenceonthebasisofanalysisandcor-rectionofmalfunctionofdifferentialprotection.DevelopmentofMiningMethodforShallowTunnelsinBeijingSubwayLuoFurong27Thispaperpresentstheapplicationanddevelopmentofthemin-ingmethodforshallowtunnelsinBeijingsubway.Forexample,ithasbeenadoptedincrossingtheexistingsubwaystructure,bridgesandbuildings,andconstructionmethod,advancingsupport,dewatering,monitoringmeasurementhavegreatlydeveloped.ApplicationofLaserScaninClearanceInspectionYangFengchun,WuWangqing,YuGuocheng31Thispaperpresentsthedesign,dataprocess,andinspectionresultofthelaserscanninginspectionsystem,whichisofanimportantsignificanceinensuringthesafetyofthecontinuouslydevelopmentoftherailtransitsystem.IsoelectricGroundingConnectionforLighteningProtectionSys-temWuGuoxing36Thispaperpresentstheanalysisanddiscussionoftheprincipleofisoelectricconnectionforlighteningprotectionanditsimplementa-tionbasedontheeffectivefunctioningofNanjingmetro'ssignalingsysteminlighteningprotection.StrayCurrentMonitoringSystemBasedonAdvancedCommu-nicationNetworkJiangHongze38Basedonthegenerativemechanismofstraycurrentinthemetrolinesanditsharm,thestraycurrentmonitoringsystemforNanjingMetroLine1isreformedintoapowerfulandintegratedonlinemoni-toringsystemwiththeoriginalhardware(atarelativelowcost)andthesupportoftheOTNdigitaltransmissionnetworkandmetroLAN.Asaresult,itdidawaywiththefunctionaldefectsandcontributestosafeoperationofthemetrosystem.QuickTreatmentofCasualtyHappeninginTrackAreainMetroStationYinWeiyang,PeiHuan43Thispaperpresentsadiscussionofthebasicconceptandprocessforquicktreatmentofthecasualtyhappeningintrackareainmetrostationbasedonthemainpeculiarityoftheincident,methodoftreatment,requirementoftrainoperationandrelativelawandordinance.TalkoverOneWayTicketAdjustmentinMetroAFCSystemZhaoXiaowei,ChenXulian45BasedonthedailyrequirementoftheonewayticketsintheAFCsysteminShenzhenMetro,thispaperputsforwardthecalculationmethodforonewayticketrequirementforadjustmentinordertomixtheticketresourcesrationallytolowerthecostonticketpreparation,andatthesametime,tomeettherequirementofthedailyoperationofthemetrosystem.ICDataBasedODInformationProcessinMetroSystemZhouChonghua47Thispaper,takingShenzhenMetroasanexample,presentsthecalculationofOD(Origin-Destination)matrix,mainflowsetatOpoint,andkeyODpairsusingICdata.DesignofPermissibleControlCircuitforEmergencyTractionSystemofMetroTrainsinNanjingDongZhaobing,LingShiqing50Themalfunctionoftheelectricapparatusoftheformertractionpermissiblecontrolsystemseverelyaffectedthetraintractionsystem,andinturn,theefficiencyoftrainoperation.Therefore,onthebasisoftheanalysisofthecircuitryandfullconsiderationofsafety,asetofmeasureswastakentoimproveemergencycircuit.Asaresult,failurerateisreducedandoperationefficiencyenhanced,whilesafetyensuredDiscussionforImprovementofInspectionandMaintenanceSys-temforMetroVehiclesWuQiang53Basedontheanalysisofthestatusquooftheinspectionandmain-tenancesystemformetrovehicles,thispaperpresentsasolutionforimprovement,whichinvolvesdistributedinspectionandmaintenancetoensurethequalityoftheinspectionandmaintenanceandtoen-hanceefficiencyofthevehicleutilization.ApplicationofWLANinContractingaMetroProjectthroughTenderZhangRui,LiYugang,ZhuJu55Thispaperpresentstheconfiguration,process,modelde