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1、铁路运输气体类危险货物泄漏扩散模拟分析AbstractWiththerapiddevelopmentofthenationaleconomy,theapplicationofchemicaldangerousgoodshasbeenintothevariousfieldsofsociallifeandproduction.Forthetransportationofdangerousgoodsismostlyadoptsthemodeofrailwaytransportation,andtheincreaseofrailwayspeedandr
2、oadnetworkdensity,therailwaydangerousgoodstransportbusinessmorebusy.Gasofdangerousgoodsbyliquefactionoroftencompressagasstoredinliquefiedgastankcar,inordertofacilitatetransportation,makesthetransportationsecurityputforwardhigherrequirements.Ifthegasofdangerousgoodsleakagedif
3、fusionaccidents,willcausehugedamagetothesurroundingresidentsandtheenvironmentalongtherailway.Therefore,theaccuratedivisionofleakageunderwindhazardareaandconcentrationdistributioncharacteristics,willbeforthedrawupemergencyplans,itissignificanttoreducetheleakageaccidentscaused
4、casualtiesandlosses.Thispaperfirstdiscussestheresearchofgasleakageanddiffusionofhazardousareasofdangerousgoodsandconcentrationdistributionhasimportantsignificanceandthedomesticandforeignresearchstatusofgasleakageanddiffusionmodel;usingthegeneralizeddefinitionofdangeroussourc
5、etheoryinthesafetymanagementofdangerousgoods,gaswereriskfactorsidentification;summarizedthecharacteristicsandconcentrationofgasleakageanddiffusiondistribution,accordingtotheleaklocation,proposedtotheprojectmodeltocalculatetheleakagerate;therailwaytrainupadangerousgoods,every
6、carisapotentialsourceofleakage,theleakagelocationandheightdifferenceofeachvehicle,basedontheGaussmodel,putsforwardthecalculationmethodofthediffusionconcentrationtheleakageofrailwayvehicles,studyontheleakageofdownwinddiffusionconcentration;intheprocessoftrainoperation,theleak
7、ageaccidents,trainscontinuetorun,theGausslinesourcemodelisappliedtothesimulationoftrainoperationprocessofleakageanddiffusionconcentrationdistribution,influenceoftrainrunningdistanceofconcentrationdiffusion.Withtherailwaytransportationofliquidammoniaasthebackground,considerin
8、gonlythetoxicityofcasualties,accordingtothetoxicityhazardareaisdividedintor
