简介：

简介：该文通过对渭河断陷盆地中一些水库工程勘察，所获得的丰富的资料，总结出该盆地于Q3-Q4时期沉积了一套貌似黄土而其性质不同的土层。在上述地区建库需注意其特有的工程地质性质和在勘察评价中应注意的若干问题。

简介：水坝是能将不可预知的和无规律的降雨和径流水量转换为可控制的水源的一种结构。可控制的水源是人类文明延续所必不可少的。因此，人类文明的历史有多久修建水坝的历史就有多长，这一点毫不奇怪。本书收录了由专家撰写的反映筑坝历史上具有重大影响的各类水坝工程的文章17篇。

简介：

简介：

简介：Inthispaper,perturbationmethodandFourier-cosine-expansionmethodareusedtosolvea3-DnonlinearproblemofasupercavitatingflowinaninclinedfieldofgravityatlargeFroudenumbers.Byexpandingthevelocitypotentialintoapowerseriesofasmallparameter,theoriginal3-Dnonlinearproblemisreducedtoanumberof2-Dones.Thesolutionsofthefirstthreeordersarederivedindetailandexpressedintermsofthecompleteellipticintegralsofthefirstandsecondkinds.Thentheboundaryintegralequationmethodisappliedtogetthenumericalsolutionsforeachorder.Computationalresultsareprovidedforsupercavitatingflowspastconesundervariousflowconditions.

简介：西班牙即将提出其国家水文计划，一项针对解决国内一次严重干旱的法规。马丁．欣得利在马德里作了关于对未来调水项目中的工程能够进行模拟的报告。

简介：

简介：

简介：Inthepresenceofbottomwater,adropinthereservoirpressureduetofluidproductioncausestheaquiferwatertoexpandandtoflowintothereservoir.Therefore,hydrocarbonproductionfromawellislimitedbythecriticalflowrate.Themainpurposeofthisstudyistoinvestigatethebreakthroughtimeandthecriticalratebyusinganovel3-Dhorizontalwellmodel.Basedonthehypothesisthatthehorizontalwellislocatedinanypositionofacircularreservoirwithno-flowboundaryonthetopofthereservoirandconstantpressureboundaryatthebottom,thehorizontalwellhasbeenregardedasaninfiniteconductivitylinesinkandthena3-Dsteady-stateflowmodelofthehorizontalwellissetup.ApointsinkpressuresolutioncanbeobtainedwiththeFouriertransform.Theresultofthepressuredistributionoftheuniformfluxhorizontalwellcanbepresentedbymeansoftheprincipleofsuperposition.Accordingtothestablewatercrestingtheory,thisstudyconfirmsthestableheightofwatercrestingandthecriticalrate.Meanwhile,itcanre-confirmthebreakthroughtimeataspecificrate.Theoutputofacomparisonbetweenthis3-Dmodelandthereservoirnumericalsimulator(Eclipse)showsthemethodpresentedherecanbeappliedtoinvestigatethebehaviorofawatercrestingandtopredictthebreakthroughtimeatthebottomwaterdriverreservoir.

简介：

简介：Inthisarticle,theanaglyphvideomakerisemployedforgeneratingrealistic3-DflowsandthesoftwareFlowAnimatorisdevelopedusingthattechnology.BasedonMicrosoftWindowsPresentationFoundation(WPF),thereal3-Dsceneissetupandmarkerparticlesaredistributedinitrandomlyinordertocreateamorenaturalflowscenario.ThetrajectoryoftheparticlemotioniscalculatedwithLagrangiandescriptionin3-Dspace.Duringthesimulation,theviewportcanbechangedinordertofocusondifferentpartsofthemodelbypanning,zooming,rotatingandinclinationvariationetc.Markerparticlesmayappearindifferentshapes:spheres,tracking-balls,cylindersandribbonsinordertofitdifferentflows.Itisthefirsttimethatthevideoanaglyphtechnologyisemployedinthe3-Dhydrodynamicsimulation,whichremovestheobstaclesfor3-Dscenestoberenderedonaflat-paneldisplay.

简介：10月30日,苏洼龙水电站厂房迎来了关键性节点,4号机主机间底板混凝土浇筑,标志着厂房施工从开挖及边坡支护进入新一轮的转序,业主、监理、各参建单位共同见证了这一时刻。受堰塞湖灾害事件影响,原计划节点时间延期,面对项目工期紧、任务重以及灾后各项工作重新梳理,项目部充分调动资源,合理优化施工现场管理,做大量前期准备工作,从测量放线、基岩面清理、混凝土运输等方案制定了一整套迅速可行的施工保证措施。

简介：日前，加纳能源部与一家名为PATOPOWER的当地公司签署谅解备忘录，启动4个小水电站项目。上述项目耗资预计将达9亿美元，其中90％的资金将通过PATOPOWER从一家名为J．P．MORGAN的英国金融机构融资获得，其余10％由PATOPOWER和加纳政府提供。

简介：

简介：通过对比分析大清河系北支"63·8"、"96·8"、"7·21"3个典型洪水的雨情、水情,为未来大清河系北支防洪提供参考。

简介：Ageneralizedbendflowmodel,treatinga90°singlebendand60°continuousbends,wasdesignedtoquantitativelydescribe3-Dturbulencemechanismofcirculatingnot-fully-developedflowinopenchannelswithbends.The3-Dfluctuatingvelocitiesofturbulentflowweremeasuredandanalyzedwitha3-Dacoustic-Dopplervelocimeter.Formulafor3-Dturbulentintensitywasderivedusingthedimensionanalysisapproach.Expressionsofverticalturbulent-intensitydistributionswereobtainedwiththemultivariant-regressiontheory,whichagreewithexperimentdata.Distributionsofturbulentintensityandturbulentstresswerecharacterized,andtheirrelationshipswereconcluded.Inthebend-turbulent-flowcoreregion,longitudinalandlateralturbulent-intensitydistributionsarecoincidentwithlineardistribution,butinnear-wallregionarecoincidentwiththeGammadistribution.VerticalturbulentintensitydistributionsarecoincidentwiththeRayleighdistribution.Herein,itisconcludedthatthebendturbulenceisanisotropic.

简介：11月17日，乌金峡水电站3号机组A级检修项目正式开工。本次检修主要是乌金峡水电站3号水轮发电机组A级检修作业中水轮发电机组各部件的分解、吊出、检查、处理、回装、调整及检修各项相关试验工作，并对3号水轮发电机组调速系统、油压装置及漏油装置、技术供水系统、机组轴承润滑及高压油顶起系统等部分辅助设备及系统检修、调整及修后相关试验工作。

简介：

简介：