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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