Page 87 - 《水资源与水工程学报》2024年第2期
P. 87
!35 "!2 # & ' ( ) & * + , - Vol.35No.2
2024 $ 4 % JournalofWaterResources&WaterEngineering Apr.,2024
DOI:10.11705/j.issn.1672-643X.2024.02.09
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GHIJK:TV213.4 LMNOP:A LQRK:1672643X(2024)02008308
Influenceofanthropogenicwaterdiversiononriverenergyinplainrivernetwork
1
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1,2
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TIANXueqi ,WANGHua ,ZENGYichuan ,CHENJingwei,LIJiale
(1.CollegeofEnvironment,HohaiUniversity,Nanjing210098,China;2.KeyLaboratoryofIntegratedRegulationand
ResourceDevelopmentonShallowLakes,MinistryofEducation,HohaiUniversity,Nanjing210098,China)
Abstract:Thepoorhydrodynamicconditionsintheplainrivernetworkhaveresultedinprominentwater
qualityissues.Toimprovethewaterenvironmentintheplainrivernetworkarea,weselectedhydrological
andwaterqualitymonitoringdataoffloodanddryseasonsof2018from19crosssectionsintheBinhuRiv
ernetworkinWuxi ,JiangsuProvince.WeemployedtheMIKE21BinhuRivernetworkhydrodynamic-
waterqualitymodelandaPythonbasedenergymathematicalmodeltoinvestigateenergydissipationpat
terns,therelationshipbetweenenergyandwaterquality,andtheoptimalwaterdiversionflowrange.The
resultsshowedasignificantnegativecorrelationbetweenwaterqualityconcentrationandriverenergy.In
creasingthewaterdiversionwithincertainlimitsledtoariseintotalriverenergy ;however,uponreac
hingathreshold,furtherincreasesinwaterdiversioncausedagradualdecreaseintotalriverenergy.By
optimizingthewaterdiversionschemesattheenergytargetlevel ,weeffectivelyharmonizedthediverse
factorsinthewaterdiversionprocess.Thisoptimizationallowedustodeterminethedailyoptimalwater
diversionflowrangeandtheoptimaltotalenergyrangefortherivernetwork.Thesefindingsprovideaba
sisforoptimizingwaterquantitycontroltoensurethehydrodynamicandwaterenvironmentalconditionsof
theplainrivernetwork.
Keywords:riverenergy;waterdiversion;twodimensionalrivernetworkmodel;optimalwaterdiversion
flowrange ;temporalandspatialdistribution;plainrivernetwork
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