英语演讲PPT-地震

LOGOearthquakewave(震波)Source(震源)Focaldepth(震源深度)P-wave(纵波)andS-wave(横波)magnitude(地震震级)andearthquakeintensity(地震烈度)earthquakewaveThesharpburstoccurredwithintheearthproducedSource•OnthegroundfromtherecentpointFocaldepthTheepicenterofthedepthtothesourceShallowsourceearthquake(浅源地震):focaldepthlessthan60kilometers.intermediate-focusearthquake（中源地震）:focaldepthin60-300kilometers.Deepsourceearthquake（深源地震）:focaldepthmorethan300kilometers.P-waveandS-waveP-wavetomakethegroundfluctuationbouncingoffS-waveshakingthegroundlevelmagnitude•Smallearthquake（小地震）:lessthan2.5levelsofearthquakes•Inductiveearthquake（有感地震）:2.5-4.7earthquake•Destructiveearthquake（破坏性地震）:morethan4.7earthquakeintensity（烈度）:Themeasureofearthquakedamage(12degrees)intensityDamagesBenefitsImpactsonhumanlifespecificdamagesNowlet'slook......ThedestructionofbuildingsGrounddamagesTsunamisUnderseaearthquakesFireFloodsGasleakPlagueSecondarydisasterSometimes,secondarydisastercausebiggercasualtiesandlossesthanwhichwerecoursedbydirectdisaster.FireinearthquakeinKantoTheearthquakeinTangshancausedpollutioninTuojiangandcausedthefishdiedintheriver.comparisonDeathtollandeconomiclosscausedbytheearthquakeindevelopedcountriesmuchlessthandevelopingcountries.里氏8.5级里氏8.0级BENEFITS1.Avarietyofmountainsandrivers（奇山异水）theseveremovementofthecrust（地壳）raiseupblockmountains(断层山)sinkdownwarpedlakes（凹陷湖）HuangshanMountainHuashanMountainLushanMountainTaishanMountainQinghaiLakePoyangLakeDongtingLakeDianchiLakeinYunnansomespringsSouthandNorthhotspringinchongqingprovince.2、Abundantmineralresourcestherelativemotionofthecrust（地壳）uptothesurfaceoftheearthforhumanexplorationfacilitatedmulti-metalore（成矿）belt3、Artificialearthquake（人工地震）explorationforoiltakeplacebeforehumanhistory（人类历史时期）alotofbenefitsishelpfultotheformationofpetroleum（石油）BuildingreinforcementGoal:nodamageunderfrequentearthquake,repairabledamagesunderbasicearthquakeandnocollapseunderrareearthquake.CommonproblemsinarchitecturalengineeringDesigndefectsCan’tmeetthedemandsArchitecturalplanningandlocationisimproperPoorqualitySolutionsGoodlocationsReasonablestructures•Goodseismicbehaviormustcomefromrelativelysimplestructures!Uniformandsymmetricalwalls（墙体均匀对称）UsewoodmaterialsStrengthenconstructionmanagementAdoptionofnewtechnologySeismicenergydissipation（消能减震）Seismicisolation(隔震）•Bearingscansupportstableoftheupperstructuretoisolateseismicenergy。EscapefromearthquakeTriangleoflifewillbeformednexttobeds,desks,bigfurnitureandcars.Whatissurvivaltriangle?SurvivalTriangleThesearefallenwallsandbeams.Whenanearthquakeoccurs,youhavetofindatriangleofspacetoescapefromtheearthquake.Manypeopledonotunderstandthetriangle,sotheyteachchildrenlikethis!Whenanearthquakeoccurs,youcannotdolikethis!1、Shelterunderthetable，bedorcar2、Crouchinthecorner3、StandbesidethedoorTherightway!Whentheearthquakehappens,youshoulddolikethis!Whereisthesurvivaltriangle?Ifyouhavenotimetoleavethehouse，you'dbetterhideinthebathroomwhichhaslotsofsupportsandsmallspaces.Whenyouareinacar?Peopleinthecarwillbeinjuredbyobjectsfallenfromthebuildings.Almosteverycarhasa3feethighspacenexttoit.Youshouldgetoffthecar,andsitorliebesideit.