Page 128 - 《水资源与水工程学报》2023年第5期
P. 128
! 34 " ! 5 # & ' ( ) & * + , - Vol.34No.5
2023 $ 10 % JournalofWaterResources&WaterEngineering Oct.,2023
DOI:10.11705/j.issn.1672-643X.2023.05.14
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EFGHI:TV139.2 JK7LM:A JNOI:1672643X(2023)05012408
Influenceofslidingvelocityonlandslidegeneratedwave
characteristicsandnarrowreservoirstructure
3
5
2
2,4
1,2
1,2
HECuiling ,LIPengfeng,ZHANGZhi ,JINGHaixiao,WANKecheng ,DUANJunbang
(1.ShaanxiWaterEcologicalEnvironmentEngineeringTechnologyResearchCenter,Xi’an710065,China;2.Northwest
EngineeringCorporationLimited ,Xi’an710065,China;3.StateKeyLaboratoryofEcoHydraulicsinNorthwestArid
RegionofChina,Xi’anUniversityofTechnology,Xi’an710048,China;4.HighSlopeandGeologicalHazardResearch
andTreatmentSubcenterofNationalEnergyandHydropowerEngineeringTechnologyResearchandDevelopment
Center ,Xi’an710065,China;5.HuangheHydropowerDevelopmentCo.,Ltd.,Xining810000,China)
Abstract:Inordertoclarifythegenerationandpropagationcharacteristicsoflandslidegeneratedwavesin
narrowreservoirareas,theinfluenceoflandslideimpactingvelocityonthewavecharacteristicsandreservoir
structureisinvestigated,takingthepotentiallandslideNo.1intheYangquReservoirasanexample.The
wholeprocessoflandslidegeneration ,developmentandpropagationisanalyzedusingathreedimensional
numericalmodel ,whichisthenverifiedbyaphysicalmodelwithaproportionalscaleof1∶200.Theresults
showthatthetimelineofthewavessimulatedbythethreedimensionalnumericalmodelagreeswellwith
thatbythephysicalmodel,andthewaveheightsmeasuredatthegenerationlocationandinfrontofthedam
areconsistentwiththesimulationresults.Innarrowreservoirs ,theheightoftheleadingwavedecreases
withtheincreaseofthevelocity ,anditisnotnecessarilythehighestamongthewaves.Noobviousdamping
isfoundfortheleadingwaveduringthepropagationfromthelandslidetothedam ,butitcontributeslittleto
thetotalovertoppingvolume,becausethepeakoftheovertoppingdischargeappearsmuchlaterthanthe
leadingwave ,whichisprobablyduetothemultiplescatteringofwavesnearthedam.
Keywords:narrowreservoir;landslidewave;landslidevelocity;waveheight;wavecharacteristics;nu
mericalsimulation
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