Page 129 - 《水资源与水工程学报》2022年第4期
P. 129
!33 " ! 4 # & ' ( ) & * + , - Vol.33No.4
2022 $ 8 % JournalofWaterResources&WaterEngineering Aug.,2022
DOI:10.11705/j.issn.1672-643X.2022.04.17
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FGHIJ:TV143 KLMNO:A KPQJ:1672643X(2022)04012508
Waterandsedimentinflowconditionsandnonequilibrium sedimenttransport
characteristicsinthe“hump”reachofthelowerYellowRiver
1
HUANGFeiyang,ZHOUZijun 2
(1.CollegeofWaterConservancyandHydropowerEngineering,HohaiUniversity,Nanjing210024,China;
2.NanjingHydraulicResearchInstitute,Nanjing210024,China)
Abstract:Duetothespecialwaterandsedimentinflowconditionsanduniquegeographicalenvironment,
theGaocun-AishanreachofthelowerYellowRiverhasbecomeatypical“hump”reach.Takingthe
waterandsedimentdataofhydrologicalstationsinthelowerYellowRiverfrom1990to2020asthere
searchobject ,thispaperfocusesonthewaterandsedimentinflowandsectionmorphologicalcharacteris
ticsofHuayuankou-GaocunandGaocun-AishansectionsinthelowerYellowRiver ,andestablishes
thefunctionalrelationshipbetweensedimentdischargeratio,riversedimentinflowcoefficientandriverfa
ciescoefficientusingtheformulaofnonequilibriumsedimenttransportrate.Theresultsshowthatafter
theXiaolangdiReservoirwasputintouse ,thesedimentinflowinthehumpreachofthelowerYellow
Riverdecreasedsharply.Basedonthissituation ,thenumericalrelationshipbetweenthesedimentdis
chargeratioandthesedimentdepositioninthelowerYellowRiverisconstructedandthepowerfunction
formulaofsedimentdischargeratio ,sedimentinflowcoefficientandriverfaciescoefficientisfurtheres
tablished.Thisformulacancalculatethescouringandsiltingchangesofeachreachmoreaccuratelyusing
theparameterssuchaswaterandsedimentinflowconditionsandriversectionmorphologyofthelower
YellowRiver.
Keywords:waterandsedimentinflowcondition;watersedimentrelationship;humpreach;sediment
inflowcoefficient ;riverfaciesrelationship;thelowerYellowRiver
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