简介：InthispaperTVDexplicitschemesdevelopedrecentlyinCFDareusedtosimulatefivemodelsofboresduetodam-break.Numericalexperimentsarepresentedtodemonstratethattheyachievehighresolutionandgeneratenospuriousoscillationsandtoshowtheversatilityoftheschemes.

简介：Thispaperpresentstheresultsofanexperimentalstudyfocusedonthepropagationofdam-breakflowwavesovermovablebeds.Testsconsistedinthesuddenopeningofaverticallift-gatewhichseparatedinitialwaterandsedimentlevelsupstreamanddownstreamofthegate.Theyallowedthesimulationofthefollowinginitialconditions:withorwithoutinitialbed-stepatthegatecross-section;withorwithoutwaterdownstreamofthegate;withorwithoutsedimentsdownstreamofthegate.Testresultswereusedtodiscusstheinfluenceofthemovablebedonthecelerityofthewave-fronts,aswellasonthedownstreamwave-frontheight.Thetotalvolumeofdislodgedsedimentswasalsoassessed.Someimportantconclusionswereachieved:i)themovablebeddoesnotaffecttheupstreamwave-frontceleritybutitaffectsthecelerityofthedownstreamwave-front;ii)theexperimentalceleritiesshowsomedisagreementwiththeanalyticalsolutions;iii)theexistenceofaninitialbed-stepatthelift-gatecross-sectioninfluencesthedownstreamwave-frontpropagation,includingthewaterdepth.

简介：

简介：BCHydrohasnowcompletedworkonstage1oftheElsiedamupgradeinVancouverlsland,Canada.Thedam,partofthe27MWAshriverhydroelectricfacilitybuiltin1958,isbeingupgradedtoresistsmajorseismicevents.Darnsafetyinvestigationshadshownthatathinlayerofsaturatedloosematerialinthemaindamatapproximatelyel326mwouldliquefyduringamajorearthquake.

简介：IranhassignedacontractwithunnamedforeignfinanciersforUS$300Mtofundtwohalf-finisheddamschemes,accordingtoTehranradio.TheschemesaretheOsturdaminMianehinEastAzerbaijanprovinceandtheMollaSadradaminFarsprovince.TheOsturdamwillhaveastoragecapacityof2Bm^3anda160MWhydropowerstation.

简介：

简介：请看下面两个句子：Atlast,thecloudsbrokeandthesuncamethrough.最终乌云散去，太阳出来了。

简介：ＴＨＥＩＮＩＴＩＡＬＦＬＯＷＳＴＡＴＥＯＦＡＢＲＯＫＥＮＤＡＭＣｈｅｎＹａｏ－ｓｏｎｇ；ＪｉａｎｇＴａｏ（ＰｅｋｉｎｇＵｎｉｖｅｒｓｉｔｙ，Ｂｅｉｊｉｎｇ１００８７１，Ｐ．Ｒ．Ｃｈｉｎａ）Ａｂｓｔｒａｃｔ：Ｔｈｉｓｐａｐｅｒｕｔｉｌｉｚｅｓｔｈｅｍａ...

简介：Modernizationandmaintenanceofadamoftenrequireemptyingthereservoir,aprocessthatcancausemudbankinstabilitiesandenvironmentaldisturbances.Inordertoaddresstheproblemofmudbankcollapsecharacterization,astudyisconductedinpartnershipwiththeLaboratoireNationald'Hydraulique(LNH),asubsidiaryofElectricitédeFrance(EDF).Thispaperpresentsageotechnicalmodelingofsubmergedandemergentmudbankstabilityandacomparisonofthemodelresultswiththemeasurementscarriedoutthroughoutthewholereservoir.

简介：采用恒星形成的观察分布在剩余的框架评估Lyman裂缝星系(LBG)的andhalf光半径紫外，我们以经验为主地为LBG调查预言的星的集体功能。一座山峰在1.5附近在质量存在，这被发现为他们的星的集体功能并且在那里的x10(10)M(圆点)是比10高的LBGswith星的群众(11)的重要数量在类似于3的z的M(圆点)。在那里，为LBG人口的二个家庭应该被红外线的数组照相机(IRAC)观察(它是在红外线的空间的一台关键仪器望远镜Spitzer)，一个人是红的，其它是蓝的，它与最近的工作一致。而且，为有不同星的群众的LBG的预言的comoving关联长度，即，与不同8亩m大小，也被讨论。红LBG应该比蓝LBG更强烈在空间被聚类。这些预言能被IRAC的观察测试，并且将在当前的层次星系形成模型上提供强壮的限制。

简介：Thenumericalsolutionofdamtoelineissolvedbasedonthedamdataandtopographicmapofdamlocated.ThedisplayofdamperspectiveisalsorealizedbyprogrammingofusingVC++andOpenGL.Theresearchresultsaboveprovidethefoundationofconstructiondesign,constructionloftingandinformationinquiry,whichavoidsthedrawbacksofonlyusingblueprintstodothesameworkinthepast.Themethodusedisusefulinpracticalengineering.

简介：

简介：TheSeventhNationalPeople’sCon-gress(NPC)concludeditsfifth,andlast,sessiononApril3,1992inBeijing,endorsingtheStateCouncil’sgovernmentworkreport,threedraftlaws,andalsogiv-ingthego-aheadtothelong-disputedThreeGorgesdamproject.Ofthe2,633deputiesattendingclos-ingsessionheldinGreatHallofthePeople,1,767votedinfavourofthe57-billionyuan($10.5billion)ThreeGorgesdamprojecton

简介：Ithasn’tbeeneasy,butalmostalloftheworkontheThreeGorgesProjectisonschedule,accordingtoacorporationoverseeingconstructionofthedam.TheChinaYangtzeThreeGorgesProjectDevelopmentCorporationhasreportedthatcontractorsandotherstaffareworkinghardtoensurethatthefloodseasondoesnotslowthedamproject.Thecompanyrecentlydetailedthemammothtasksthathavetakenplacesofar

简介：

简介：2003年单项填空的第31题Newsrepotssaypeacetalksbetweenthetwocountries_withnoagreementreached.A.havebrokendownB.havebrokenoutC.havebrokeninD.havebrokenup此题的正确答案是A。译文:有报道说,两国之间的和平谈判因没有达成一致意见而破裂了。

简介：<正>OnNovember12thisyear,JinpingCascadeIHydropowerStation,seatedonthelowerreachesofYalongRiverinSichuanProvince,startedtobeconstructed.ThestationisthesecondlargehydropowerprojecttobeconstructedonYalongRiverfollowingErtanHydropower

简介：从在到喂转动的木头的水库的木材仓库的木头漂流技术被模型测试学习。模型测试与引力类似和110的比率的规则被参加。主要参数象拖船船，水疗院加速器和喂转动的结构的数量一样，是坚定的。更合适的漂流过程被提出，设计的可靠基础被供应。

简介：ＡｐｐｌｉｃａｔｉｏｎｏｆＳｌｕｉｃｉｎｇｔｏＣｏｍｐａｃｔＺｏｎｅ４ＡＲｏｃｋｆｉｌｌｉｎｔｈｅＭａｉｎＤａｍｏｆＸｉａｏｌａｎｇｄｉＰｒｏｊｅｃｔＧｕｏＱｉｎｇｇｕｏ，ＹａｎｇＣｈａｏＮｏｒｔｈｗｅｓｔＩｎｖｅｓｔｉｇａｔｉｏｎＤｅｓｉｇｎ＆Ｒｅ...

简介：Accordingtothequalitycontrolneedsoffillingconstructionofthefacerockfilldam,bymeansoftheglobalsatellitepositioningtechnology,thewirelessdatacommunicationtechnology,thecomputertechnologyandthedataprocessingandanalysistechnology,andintegratingwiththerollercompactionmachine,theGPSreal-timesupervisorysystemisdevelopedinthispaper.Itcanbeusedtoreal-timelysupervisetheconstructionqualityoftherollercompactionforfillingengineering.ThecompositionandappliedcharacteristicsofGPSsystem,andthekeytechniqueproblemandsolutionofthedesignarediscussed.TheheightaccuracyofGPSsystemisanalyzedandthepreliminaryapplicationisintroduced.