Page 103 - 2024年第55卷第2期
P. 103
Studyontheinfluenceoflandslide - inducedsurgepressuredistributionon
damagetopost - earthquakearchdams
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LIYuqian,CHENJianyun ,XUQiang,LIJing 1
(1.SeismicInstituteofEngineering,DalianUniversityofTechnology,Dalian 116024,China;
2.StateKeyLaboratoryofCoastalandOffshoreEngineering,DalianUniversityofTechnology,Dalian 116024,China)
Abstract:Strongearthquakescantriggerlandslidesonpreviouslydamagedslopes,increasingtheriskofpost -
earthquakelandslides.Theselandslidescangeneratewavesthatmaycauseadditionaldamagetoarchdams ,poten
tiallyleadingtodamfailure.Currentresearchpredominantlyfocusesonundamagedarchdams ,simplifyingland
slidesurgebyassuminguniformwavecharacteristics.However,studiesonlandslide - inducedwavesrevealsignifi
cantvariationsinwaveheightandphaseatdifferentlocationsonthedamsurface.Thisstudyidentifiesthreetypical
wavepressuredistributionbyapplyinganempiricalwaveheightformulafromtheChinaInstituteofWaterResources
andHydropowerResearch ,takingahigharchdam asacasestudy.Basedonthedefineddamageindexes,this
studyevaluatestheeffectsoflandslidesurgepressuredistributionsonearthquake - damagedarchdams.Theresults
showthattheinfluenceofthepressuredistributionsoflandslidesurgeonearthquake - damagedarchdamsisgreater
thanthatoftheuniformwavedistributionsinfrontofthedamwhenthewaveheightdifferenceandtimedifference
exist.Whenanalyzingtheimpactofuniformdistributedwavepressureonearthquake - damagedarchdams ,theas
sociatedriskmaybeunderestimate.Thispaperrecommendsconsideringthespatialandtemporalcharacteristicsof
surgewaveswhenassessingthesafetyofpost - earthquakelandslide - inducedwaves ,whichofferscrucialinsights
forevaluatingthesafetyoflandslidesurgesafterearthquakes.
Keywords:landslidesurge;archdam;earthquakedamage;surgepressuredistribution;damageindex
(责任编辑:李 娜)
(上接第 213页)
Theoryandpatternofoptimalregulationofwatersystem inwatershortagestressarea
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ZHAOYong,CHANGHuanyu ,LIHaihong,QINChanghai,HEFan,QUJunlin 1
(1.StateKeyLaboratoryofSimulationandRegulationofWaterCycleinRiverBasin,ChinaInstituteof
WaterResourcesandHydropowerResearch ,Beijing 100038,China;
2.AcademyofEco - CivilizationDevelopmentforJing - Jin - JiMegalopolis,TianjinNormalUniversity,Tianjin 300387,China)
Abstract:Theoptimalregulationofwatersystemisoneofthekeymeasurestorealizetheharmoniousandsus
tainabledevelopmentofhuman - water - ecologyinwatershortagestressarea ,whichisofgreatsignificancetoen
surethestabledevelopmentofregionaleconomyandsocietyandecologicalhealth.Inthispaper ,theBeijing -
Tianjin - Hebeiregionistakenasatypicalcaseofwatershortagestressregion.Byanalyzingtheconnotationofwa
tersystem ,itisconcludedthatthewatersysteminthewatershortagestressregionhasthreephenomena:deep
coupling,strongcompetitionandsystemimbalance,anditisfoundthatthewatersystempresentsanalternatinge
volutionpatternbetweenunsteadyandsteadystate.Thestatechangeanddevelopmentprocessofthewatersystemin
theBeijing - Tianjin - Hebeiregionisevaluatedbyconstructingthesteadystateindexofthewatersystem.Inorderto
achievethehealthofnaturalsocialwatersystems ,adecouplingregulationmodelof“highcohesion - lowcoupling”
isproposed.BasedonthecurrentsituationoftheBeijing - Tianjin - Hebeiregion,ahierarchicalregulationof“ensu
ringrigid - reducingflexible - restrainingluxury ”iscarriedoutonthewaterdemandside,andtheadaptationoptimi
zationof“naturalwaternetwork - artificialwaternetwork - virtualwaternetwork”iscarriedoutonthewatersupply
side ,andtheintegratedwaternetworklayoutof“threelines,sevenrivers,fourdistrictsandeightsources”ispro
posedintheBeijing - Tianjin - Hebeiregion,soastoachievetheoverallhealthofthewatersystem.
Keywords:watershortagestressarea;watersystem;evolutionmechanism;regulationpattern
(责任编辑:韩 昆)
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