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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BCDEF:TV68;X52 GHIJK:A GLMF:1672643X(2022)01006108
Agrowth-migrationmodelofperiphytonanditsapplicationinthemiddle
routeoftheSouth -to-NorthWaterTransferProject
1,2
4
3
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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