简介：Acoupledroutingforthetransportcapacityandtheenergyslopeisintroducedthroughthedefinitionofthecontrolfactormwhosevalueislinkedtothebedformconfiguration.Thecouplingaimstofurtherincorporatetheinteractionsoccurringinalluvialriversandthusenhancethepredictionofthefinesedimentfluxes,especiallyduringhighstreampowerevents.Basedonapredictiveruleforthecontrolfactormthatonlyinvolveswaterdepth,velocityandbedformconstitutivetexture,thenovelmethodisconfrontedtoobservationscollectedinoneofthemoststronglydynamicalluvialrivernamelytheLowerYellowRiver.Comparisonsbetweentimeseriesofmeasuredandcomputedconcentrationsillustratethatduringhighvelocityeventsthemaindynamicsofthesedimenttransportiscorrectlyreproduced.Themainadvantageofthepresentapproachistosupplyconsistenttimeevolutionsofsedimentconcentrationswithoutmakinguseofanydetailedshearinformation.

简介：ＦｒａｃｔａｌａｎｄｃｈａｏｔｉｃｐｈｅｎｏｍｅｎａｏｆｓｅｉｓｍｉｃｄｉｓｓｉｐａｔｅｄｅｎｅｒｇｙｉｎａｎｅｎｅｒｇｙｓｙｓｔｅｍｏｆｅｎｇｉｎｅｅｒｉｎｇｓｔｒｕｃｔｕｒｅｓＹＵ－ＨＯＮＧＣＵＩ１）（崔玉红）ＹＯＮＧ－ＡＮＮＩＥ２）（聂永安）Ｚ...

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简介：一个有力的数字模型的发展长有模仿具体材料的破裂行为是在地震工程的主导的研究区域之一。一个可靠模型应该能足够地代表裂缝的不连续的特征并且在复杂装载条件下面模仿各种各样的失败行为。在这篇论文，数字明确的表达，它合并一个复杂僵硬塑料的接口联合弄软的结合的组成的模型，接触，磨擦并且砍膨胀进XFEM，被建议描述具体材料的各种各样的裂缝行为。为精确地在断绝的双方上装配贡献到弱形式的一个有效数字集成计划被介绍。建议方法的有效性被模仿几著名试验性的测试估计了。数字方法罐头成功地捕获裂缝路径并且精确地预言具体结构的破裂行为，这被结束。混合模式破裂行为上的mode-II参数的影响进一步被调查更好决定这些参数。

简介：为在沉积沉重的流动的骚乱精力的一个平衡方程根据solidliquid被导出二阶段的流动理论。方程为二维的、一致、稳定、充分开发的狂暴的hyperconcentrated流动被简化。推迟负担的运动的一个精力效率系数从骚乱精力方程被获得，它被定义为沉积暂停精力的比率到沉积沉重的流动的骚乱精力。实验室实验被进行在hyperconcentrated流动调查精力驱散的特征。115试验性的跑的一个总数被执行，包括有自然沉积的70跑，45与炉渣粉末跑。沉积暂停精力和流动抵抗上的沉积集中的效果被分析，在推迟负担的运动和沉积集中的精力效率系数之间的关系根据试验性的数据被建立。而且，在hyperconcentrated流动的精力驱散的特征被识别并且描述。高沉积集中不增加精力驱散，这被发现；相反，它减少流动抵抗。

简介：Ｒｅｓｅａｒｃｈｏｎｐｒｏｂａｂｉｌｉｔｙｏｆｓｅｉｓｍｉｃｃｒｉｔｉｃａｌｉｎｓｔａｂｉｌｉｔｙｏｎｂａｓｉｓｏｆ＇＇ｆｒａｃｔｕｒｅｃｏｌｌｕｓｉｏｎ＇＇ｍｏｄｅｌＳＨＩ－ＹＯＮＧＺＨＯＵ１）（周仕勇），ＬＩＮＧ－ＲＥＮＺＨＵ１）（朱令人），ＭＡ...

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简介：TheMayangCudeposit,westernHunanisamiddle-scalesandstone-typeCudepositpredominantofnativecopper.Fromanangleofgeologicalintegrativefield,fracturegeochemicalfeaturesarestudidedanddiscussedinthispaper.Infracturestructure,variantregularityandtheratiosofelementcouplesparticipatinginmetallogensisthattheirgeochemicalnaturesaresimilarorstronglycorrelative,revealchanginglawsofmetallogenictemperatureandpressurefieldsandmigratingdirectionofmetallogenicelements.Thetheoreticalstudytalliesmuchbetterwithproductivepractice.Theyaremeaningfultoconductprospectingandexployation.

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简介：Byusinganine-levelatmosphericgeneralcirculationmodeldevelopedattheInstituteofAtmosphericPhysics(IAP9LAGCM),twosetsofnumericalexperimentsarecarriedouttoinvestigatetheinfluenceoftheMascarenehigh(MH)andAustralianhigh(AH)overthesouthernsubtropicsupontheEastAsiansummermonsooncirculationandsummerprecipitationinEastAsia.Theuseofensemblestatisticsisadoptedtoreducethesimulationerrors.TheresultshowsthatwiththeintensificationofMH,theSomalilow-leveljetissignificantlyenhancedtogetherwiththesummermonsooncirculationinthetropicalAsiaandwesternPacificregion.Furthermore,theanticyclonicanomalyinthetropicalwesternPacifictotheeastofthePhilippinesmayinduceaweakEast-Asia-Pacificteleconnectionpattern.Inthemeantime,geopotentialheightintheTropicsisenhancedwhileitisreducedovermostregionsofmid-highlatitudes,thusthenorthwesternPacificsubtropicalhighat500hPaextendssouthwestward,resultinginmorerainfallinsouthernChinaandlessrainfallinnorthernChina.AsimilaranomalypatternoftheatmosphericcirculationsystemsisfoundintheexperimentoftheintensificationofAH.Ontheotherhand,becausethecross-equatorialcurrentsassociatedwithAHaremuchweakerthantheSomalijet,theanomalymagnitudecausedbytiheintensificationofAHisgenerallyweak,andtheinfluenceofAHonsummerrainfallinChinaseemstobelocalizedinsouthernChina.ComparisonbetweenthetwosetsofexperimentsindicatesthatMHplaysacrucialroleintheinteractionsofgeneralatmosphericcirculationbetweenthetwohemispheres.

简介：<正>Nowtheminingofhighsaltundergroundbrinehasbeenanimportantaspectofsaltlakemining,whichisthenecessarysupporttothedevelopmentofnationaleconomy.Withthechangeofundergroundgeological

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简介：Pierson-MoskowitzSpectrum,JONSWAPSpectrumaswellasBretschneider-MitsuyasuSpectrumareusedinthispaperforanalyzingtheinfluenceofwaveenergydirectionalspreadonrefractionofwavespectrumduetobothcurrentandtopographyofseabed.Theauthor’scalculationindicatesthatsuchkindinfluenceonthecharacteristicvalueofwaveheightaswellastheaveragedirectionofwaveenergypropagationcannotbeignored.

简介：在台湾的海岸附近的波浪精力资源与盖住一个3年的时期(20072009)的波浪浮标数据被调查。在这个区域以内的十一个学习地点在21.5跳了

简介：Tounderstandthemooringenergyduringpositioning,theexpressionsoffouritemsconcerningmooringlineenergyarepresentedbasedonafiniteelementmodel,includinggravitationalandelasticpotentialenergy,kineticenergyanddissipatedenergyduetomooring-induceddamping.Inastaticcase,theforcecalculatedfromthederivativeofpotentialenergywithrespecttodistanceiscomparedwiththatofdirectcalculation.Theresultsarefoundfitwell,whichindicatesthelawofconservationofenergyandalsoshowsthecorrectnessofthepotentialenergyresults.Forthecasesofasinglemooringlinewiththeattachmentpointoscillatingwithdifferentamplitudesinhorizontalorverticaldirection(correspondingtosurgeandrollmotionsrespectively),andthecaseofthemooringlinewithahorizontalbichromaticoscillationontheattachmentpoint,thetimehistoryofthefirstthreeitemsarecalculatedandanalyzed,also,theindicatordiagramformooring-induceddampingaregiven.Theseresultsrevealtheenergystateofthemooringlineandcanprovideabetterunderstandingofhowthemooringlineworks.

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简介：Theexperimentalresultsof3-Dfractureundercompressionareintroducedinbriefandthetheoryofstresscriterionof3-Dfractureisstudied.Methodstoimitateinitialfracturesaredeveloped.Itispointedthatthereareimportantdefectsintheextremevalue(EV)methodeverproposedbyPalaniswamyandKnauss.ThemajordefectliesinthatonlytwoEulerangles(2EA)areconsidered,butanotheroneisneglected.IfthevariationofallthethreeEulerangles(3EA)areconsidered,onecangetbetterresultwhichisconsistentwiththeobservationoffaultingthatextendsoncurvedsurfacesbutnotonplanes.Themethodofevaluatingmaximalnormalstressdirectionvector(NSDV)isproposedandfurtherprovedtobeequivalenttothe3EAmethod.ItisprovedthattheNSDVmethodcanbefurtheroptimizedtothemethodofcompositionofthefirstprincipaldifferentialplane(CFPDP).TheresultsfromCFPDPmethodcanfitthecurvedsurfacesofinitialgrowthobservedintheexperimentsof3-Dfracture.TheCFPDPmethodcanalsobeusedtointerpretthe3-Dfracturesoftheslippingsectionbetweentheasperitiesintheburiedfaultplanethatismodeledasellipsecrack.Theresultsof3-Dfracturecanbeappliedtointerpretingtherelatedproblemsoffaultingincludingthemechanismofalotofshatterrockswithdifferentdimensions,thecauseofearthquakesoccurredattheedgeofplateunderlowshearstress,andthemechanismofanisotropycausedbytheextensivedilatancyanisotropy(EDA)cracks.

简介：Chinaisacountryofhighseismicitywithmanyhydropowerresources.Recently,aseriesofhigharchdamshaveeitherbeencompletedorarebeingconstructedinseismicregions,ofwhichmostareconcretedams.Theevaluationofseismicsafetyoftenbecomesacriticalproblemindamdesign.Inthispaper,abriefintroductiontomajorprogressintheresearchonseismicaspectsoflargeconcretedams,conductedmainlyattheInstituteofWaterResourcesandHydropowerResearch(IWHR)duringthepast60years,ispresented.Thedamsite-specificgroundmotioninput,improvedresponseanalysis,dynamicmodeltestverification,fieldexperimentinvestigations,dynamicbehaviorofdamconcrete,andseismicmonitoringandobservationaredescribed.Methodstopreventcollapseofhighconcretedamsundermaximumcredibleearthquakesarediscussed.

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