河流重金属污染物迁移转化的数值模拟

:100027709(2007)03200222041121(1.,450001;2.,430072):,,,,:;;;:X522;P333.4:A:2007202227,:2007203222:(5067907550579052),(0512002500),(2005B016):(19752),,,,E2mail:[e-mail]1,,,,;,[1],DonaldJ.O’Connor(1988),,,[2]1991WASP4,,,,,,[3],(1995),,[2](1997),[4](2004),,,[1](2004),[5],,(),,,,200525320076WaterResourcesandPowerVol.25No.3June.200732253:()(),100km,71,12km200512248002006119800,10min:,,200512232000200512302000180m3ös,160m3ös;,0.0005mgöL:,,,13.44m,0.0m,0.192m0.0m3ös0.0mgöL;3.2,[6],(1)21Tab.1CalibrationresultofparametersKb2.610-12K1.110-10Kw9.010-10fb4103fH2104(1),(2(a)(b)),9.7%13.5%;,(2(c)),25.4%,,2Fig.2Comparisononthecalculatedvalueandmeasuredvalue;,,,,,(2),,,,2,0.0085mgöL(,2006113200)0.0065mgöL(,2006113800)0.0040mgöL(,2006114800),(3)u0.3mös,,,;u0.3mös,,,,4220074a.,,,b.200512,,:[1],.[J]..2004,15(5):5762583[2],.[J].,1995(4):42249[3]RobertBAmbrose,TimeAWool,JamesLMartin.WASP4,AHydrodynamicandWaterQualityModelTheory,User’sManual,andProgrammer’sGuide[R].Washington:UnitedStatesEnviron2mentalProtectionAgency,1991.[4],,,.[J]..1997(11):49255[5].[D].:,2004.[6],,,.[M].:,1997.[7].[J].,1985,5(3):2762284NumericalSimulationfortheTransformationProcessofHeavyMetalContaminationTransportinRiversDOUMing1MAJunxia1XIEPing2LIGuiqiu1(1.CollegeofEnvironmentandWaterConservancy,ZhengzhouUniv.,Zhengzhou450001,China;2.StateKeyLaboratoryofWaterResourcesandHydropowerEng.Sci.,WuhanUniv.Wuhan430072,China)Abstract:Basedontheanalysisontheexistingresearchfruitsresultsfortheheavymetalmodel,theone2dimensionaltransformaionmodelforheavymetaltransportinriversisestablished.Themodeldescribesthetransportprocessofheavymetalalongwiththestreamandthetransformationrelationshipamongvariedstates,andpresentsthehalf2experienceexpressionformulafortheheavymetalsedimentationandresuspensionalongwithsedimentaccordingtotheprincipleofsedimentengineering.CombinedwiththeobserveddataonthecadmiumpollutionaccidentinNorthriverinDec.2005,theparametersofheavymetalmodelarecalibratedandvalidated.Theconclusionsarethatthesimulationeffectbetweencalculatedvalueandobservedvalueisgoodwhentheconcentrationvalueofcadmiuminwateriscomparativelybig,andthesimulationeffectisnotidealwhentheconcentrationvalueofcadmiumiscomparativelysmall;whenthevelocityofflowislessthan0.3mös,thesedimentationactionofsuspendedheavymetalinwaterplaysamainrole;butWhenthevelocityofflowisgreaterthan0.3mös,thedesorptionactionofdepositedheavymetalbecomestheprimaryfactorthatcausestheconcentrationchangeofheavymetal.Keywords:heavymetalmodel;transportandtransformation;numericalvaluesimulation;cadmiumpollution(73)IdentificationandRecheckofLiveFloorLoadsontheErectionBayofaHydropowerPlantYANGJunLIUWanzhen(Mid2SouthDesign&ResearchInstitute,CHECC,Changsha,410014,China)Abstract:Asthedefinitionoftheliveloadsontheerectionbayfloorofahydroelectricplantisveryimportanttothestructuraldesignofthepowerhouse,wetakeBailianhePumpedStoragePowerStationasanexampletointroduceanapproachtodeterminetheliveloadsontheerectionbayfloorofahydroelectricplantonthebasisofthestructurallayoutoftheerectionbayandthelayoutofequipmenterectionandmaintenance,whilerecheckhasbeendoneinaccordancewiththecodes.Thisengineeringexampleshowsthatapplicationofthisliveloaddefinitionisdirectivetodeterminethelivefloorloadsofanindustrialfloor.Keywords:erectionbay;livefloorload;equivalentuniform(distributed)load;engineeringexample52253: