Page 65 - 《水资源与水工程学报》2022年第1期
P. 65

!33 " ! 1 #                       & ' ( ) & * + , -                               Vol.33No.1
               2022 $ 2 %               JournalofWaterResources&WaterEngineering                 Feb.,2022

            DOI:10.11705/j.issn.1672-643X.2022.01.09


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               Agrowth-migrationmodelofperiphytonanditsapplicationinthemiddle

                           routeoftheSouth -to-NorthWaterTransferProject

                                              1,2
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                                                          1
                                    HUYuying ,HUPeng,ZHUJie,LIAOWeihong
                     (1.OceanCollege,ZhejiangUniversity,Zhoushan316021,China;2.PearlRiverHydraulicResearchInstitute,
                       PearlRiverWaterResourcesCommissionoftheMinistryofWaterResources,Guangzhou510611,China;
                               3.BeijingUniversityofTechnology,Beijing100124,China;4.ChinaInstituteof
                                    WaterResourcesandHydropowerResearch ,Beijing100038,China)
               Abstract:Periphytonarewidelyfoundinnaturalwaterbodies.Theyhavestrongvitalityandcanreproduce
               andmigratebyreleasingspores/gametes.Conventionalgrowthmodelsofperiphytonusuallyonlyinvolves
               thealgalgrowthprocessandtheinfluenceofhydrodynamics ,lackingtheconsiderationofthereproduction
               andmigrationprocess,whichisalsoanintegralpartofthelifecycleofperiphyton.Inthispaper,agrowth
                -migrationmodelsuitableforperiphytonwasconstructedbyintroducingthereproductionandmigration
               processintotheconventionalgrowthmodel ,whichwasthencalibratedandverifiedusingrelevantexperi
               mentalresults.Accordingtothequalitativeresearchofalgalproliferationissuesinthemiddlerouteofthe
               South-to-NorthWaterTransferProject ,periphytoncouldproliferateabnormallywhenthedischargeveloc
               itywaslowerthan0.4m/sandthusgatheredatthecannelcornersorsidewalls.Increasingthewaterdis
               chargeofthemaincanalcouldeffectivelyincreasetheaverageflowvelocityandreducethegrowthofper
                                                                                                   3
               iphyton.Theaveragedensityoftheperiphytoninthemaincanalwhentheflowvelocitywas350m /sonly
                                                                   3
               accountedfor20% ofthatwhentheflowvelocitywas180m /s.Thesimulationresultsareconsistentwith
               theactualsituation ,andthisresearchcanprovidesomereferenceforthefurthertreatmentofperiphytonpro

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