简介：这篇论文评估方法由Engelund和汉森，开发了的沉积运输的适用性Ackers和怀特，杨等，和货车Rijn和方法在中国开发了的武汉，到黄河，它高度专注并且有细密纹理的沉积。沉积数据从实验室斜槽从黄河，从一条运河的数据的32个集合，和数据的266个集合包括超过1000观察。最好的预言被吴并且长被Yang1996方法，武汉方法，和修改武汉方法获得，当相当好的预言被货车Rijn2004方法也提供时。Engelund和汉森，Ackers和怀特，和在他们的原来的形式的货车Rijn1984方法不对黄河适用。全部的负担集中的预言的结果像一样为床材料集中，尽管全部的负担包括大部分洗负担。

简介：Thepaperprovidesacomprehensivetestingoftheapplicabilityof13sedimenttransportformulasunderdifferentflowandsedimentconditions.Thedimensionlessparametersusedfortestingthereliabilityandsensitivityofformulasaredimensionlessparticlediameter,relativedepth,Froudenumber,relativeshearvelocity,dimensionlessunitstreampower,andsedimentconcentration.Atotalof3,391setsoflaboratoryandriverdataareusedinthetests.Engineersmayfindthetestresultsusefultotheirselectionofformulasunderdifferentflowandsedimentconditions.

简介：Thispaperprovidesastep-by-stepderivationofthesedimenttransportfunctionsbyEngelundandHansen(1967)andbyAckersandWhite(1973).ThetheoreticalderivationsdemonstratethatthesetwofunctionsarecloselyrelatedtoBagnold's(1966)streampowerandefficiencyconcepts.

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简介：ThehydrodynamicandthesedimenttransportpatternswithintheestuaryoftheYangtzeRiverarecomplexbecauseofinteractionoffluvialandthetidalforces,dependingonfreshwaterdischargeandtidalrange.Basedonthedatameasuredinrecentyears,thispaperdiscussesthecharacteristicsofflowandsedimentmovementintheYangtzeRiverEstuaryandtheirinfluencesontheevolutionoftheestuary.

简介：基于在在定义变量和常数利用的数据的可靠性和代表性之间的关系，众多的费时间的方程要求复杂参数估计水流带来的碎石运输。包括流动分泌物，水深度，水表面斜坡，和表面谷物直径在这学习容易可存取的数据(来自在马来西亚的小河的d50)被用来估计水流带来的碎石运输。基因编程(GP)和人工的神经网络(ANN)当模特儿当估计床的互补工具在小河里基于在简洁和精确性之间的平衡装载运输，被使用。发达模型为ANN和GP与97%和93%的全面精确性表明高效，分别地与另外的传统的方法和实验方程相比。

简介：Laboratoryexperimentshavebeencarriedouttostudythecharacteristicsofsedimenttransportinsteepstreams.Thequestionisdiscussedwetheranarmouredsurfacesisdestroyedduetothetransportofmaterial,becauseadditionalimpulsesareactingonit,orthelayerisshelteredbythetransportedmaterial,becauseapartofthestreampowerisusedtomovethematerial.Accordingtotheresultsofthepresentedexperiments,inwhichtheinfluenceofthefeedingrateandthefeedingdurationhavebeeninvestigated,transportedmaterialreachinganarmouredriversectionfromupstreamalwaysremobilzesbedmaterial,whichisimmobileunderclearwaterflowconditions.Todecideifastaticarmourlayeriseitherdestroyedornot,twosimplecriteriawerechosen:oneconsideringthegrain-sizedistributionoftheerodedbedmaterial,andanother,whichreferestotheamountoferodedbedmaterial.

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简介：Thispaperre-examinesBagnold’stheoremofsedimenttransport.DifferentfromthestreampowerdefinedbyBagnold,i.e.,τoV,thisstudyshowsthatthetotalloadofsediment-ladenflow,gt,isrelatedtonearbedenergydissipationrate,i.e.,τou*’.Anattemptismadetoexplaintheempiricalrelation.Theratio(=k)ofmeasuredtotalload,gt,totheproductofnearbedvelocity,u*’,andenergydissipationrate,τou*’,isanalyzed.ItisfoundthatkisindependentoftheRousenumber,Z,ifZisgreaterthan2.6,butthecoefficientkdecreaseswiththeincreaseofZwhenZ<2.6.AnempiricalrelationbetweenkandZisdeveloped.Asystematicandthoroughanalysisof1,458setsofdatacollectedfrom16riversandcanalsconfirmsthattheproposedformulacanbeusedtocomputethetotalloadwithaccuracy.

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简介：Thispaperdealswiththedeterminationoftheminimumnumberofgranulometricclassesthatshouldbeusedtocalculatesedimenttransportofnon-uniformgrain-sizematerials.Thisisveryimportanttoreducecomputationaleffortsinhydro-morphologicalmathematicalmodelsbasedonsedimentcontinuitybyfractions.Inthecaseoflog-normalriverbedgrain-sizedistributionstheincrementofthegeometricstandarddeviationitselfisalreadysufficienttodescribethecorrespondingaugmentofthenumberofclasses.However,stronglynon-uniformriverbedsediments(likethoseencounteredingravel-bedrivers)showcompletelydifferentstatisticalcharacteristicswhencomparedwiththeformerones.Hereinspecificrelationshipsaredevelopedwhichconfirmthatinthesecasesboththegeometricstandarddeviationandtheskewnessofthegrain-sizedistributionmustbetakenintoaccounttodefinetheminimumnumberofgrain-sizeclasses.

简介：融合是加入流动的集中创造复杂流动和生产强壮的流动发行量并且在床形态学的快速的变化的沉积运输模式的自然、人造的隧道系统的普通特征。由几活动床的隧道融合的实验室实验的工具，这研究(1)调查并且提出(不听说得好)在隧道融合导致沉积的早期的运动的流动和几何条件，并且(2)在主要词法特征上描绘流动和几何条件的效果(例如搜索和免职区域)在融合。在这研究被考虑的主要重要性因素中是流动弗鲁德数字，融合的角度，分泌物和宽度比率和床军事性质。这试验性的研究为更好理解在隧道融合涉及沉积运输和床形态学的机制提供卓见并且也确定沉积上的各种各样的流动和几何因素的影响搬运图案和河的研究，它是在河工程的大重要性。

简介：通过本地城市的水路，从城市的表面的木质的碎片的运输很好没被理解到收缩和阻塞风险地点。当碎片运动上的有影响的因素，和大木质的碎片运动用时间系列摄影，活跃异频雷达收发机，和场地调查在自然农村环境被跟踪了，斜槽选拔赛识别了碎片和水路尺寸。用新奇被动异频雷达收发机技术，小木质的碎片通过一条城市的案例研究水路被跟踪了在城市的碎片运输上建立关键有影响的因素。通过把城市的碎片运输详细合并到来源和免职过程，城市的碎片运输的一幅完全的图画能被创造，支持有效水道电缆和垃圾屏幕设计，水路维护和阻塞风险评价。这案例研究在水路深度和速度以外的因素在在一条城市的水路以内的碎片运动是有影响的热点。在上游的碎片尺寸和来源地点被显示显著地影响潜力让碎片到达下游的收缩，说明在讨厌的东西流动碎片阻塞风险的可能的距离限制。

简介：冰盖子的存在与一个冰季节的年度出现在区域为河在沉积运输和隧道形态学上有重要效果。沉积运输和表面冰的相互作用糟糕被理解。在这份报纸，从存在斜槽的数据试验，有流动和沉积运输的一个有限范围的各个调节，被分析。如果流动强度以床被表示，分析证明在盖住冰的隧道的床负担运输能被常规关系为相等的免费表面的流动描述砍应力。修改的A考虑到速度和狂暴的散开上的冰盖子的效果被显示为计算推迟的沉积运输分泌物适用，唤醒明确的表达。

简介：Basedonlong-termmeasurementsatthreegaugingstations,Toudaoguai,FuguandHequ,andonemeteorologicalstation,thisarticlediscussesthefeaturesofdischarge(Q)andsedimentconcentration(CS)ofariverreachoftheYellowRiverwithareservoirlocatedintheLoessPlateau.Theimpactsofthelocalsub-watershedbetweenToudaoguaiandFugugaugingstationsonsedimentbudgettotheYellowRiverhavebeenanalyzed.Inaddition,thedepositionprocessesintheTianqiaoReservoirhavebeeninvestigated.Resultsshowover80%oftheprecipitationthatfallsinthelocalsub-watershedisunabletocontributetotheYellowRiverrunoffprocess.Itisfoundthattheannualmaximumsedimentconcentrationisusuallylessthan30kg/m3duringfloodseasonsatToudaoguaiGaugingStation,butthesedimentconcentrationvariesdramaticallyatFuguGaugingStation.About35%ofthesedimenterodedinthesub-watershedsbetweenToudaoguaiandFugugaugingstationswasproducedfromtheHuangfuchuansub-watershedwhichhasadrainageareaaccountingonlyfor10%ofthedrainageareabetweenToudaoguaiandFugugaugingstations.TheTianqiaoReservoirgenerallyhasdepositionduringthesummerfloodseason,andscouringduringthenon-floodseason.Onaverage,over85%ofdepositedsedimentinthereservoiroccursinthe12kmlonglowerreservoirreach.ThevolumeofannualdepositioninthereservoirmainlydependsonthevolumeofwaterfromthelocalregionbetweenHequandFugugaugingstations.

简介：Theresultsofmathematicalmodellingofunsteadyflowconditionscoupledwithspecificsedimenttransportrelationsarepresentedhere.SimultaneoussolutionsofthedeSaintVenantequationswiththreedifferenttransportrelations,namelytheEngelund-Hansenequation,Grafequation,andanempiricalequationarepresented.TheresultsobtainedwerecomparedwiththosefromtheFluvial-12programunderthesameinputconditionsandreasonablecorrelationwasobserved.Theadvantagesofthecoupledmethodforsimultaneoussolutionoftheequationscompriseahigherdegreeofaccuracy,thepossibilityofintroductionofanydesiredtransportequationintothemodelandthepossibilityofintroducinganyboundaryconditionsintothemodelalongsideacompleteunsteadyflowmodelling.

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简介：Anunderstandingofthetransportmechanismofgravel-bedriversisveryimportantfortherivermanagementandengineeringworks.Themainobjectiveofthisstudywastoconductaseriesoflaboratoryexperimentinasteepflumetoinvestigatetheparticlesegregationandthetransportrateofnonuniformgravel.Mediansizesof15mmand7.5mm,andgradationcoefficientsof1.5and2.0wereselectedfortheparticlesizedistributionsofnonuniformgravel.Inadditiontothe36setsofdatacollectedinthisstudy,635setsofexistingdataforgravelwithbothnonuniformandnearlyuniformsizeswereanalyzed.Accordingtotheresultsofthesieveanalysisandtherelatedtheory,hidingfunctionsforbothparticlesizedistributionsofthisstudywerederived.AnattemptwasmadetodevelopanEinstein-typetransportrelationshipfornonuniformgravelusingdimensionlessparameterswithmeansizeasarepresentativeparticlesize.AmodifiedSchoklitsch-typesedimenttransportequationwithacriticalunitflowdischargewasalsodevelopedtoreasonablypredictthetransportrateofgravels.Inaddition,anartificialneuralnetwork(ANN)modelwithaback-propagationnetwork(BPN)algorithmwasalsoappliedinthisstudy.

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简介：在这篇论文，在沉积的变化在中国在黄土高原在Kuye河里从1955～2006搬运超过51年被估计。给影响沉积产量和沉积运输的因素调音，例如降水深度，排出，并且人的活动被学习。为了在这在沉积产量调查变化，分水岭，沉积集中上的趋势分析，降水深度，和分泌物被进行。在2个气候车站(CS)的降水深度，以及分泌物和沉积在3点搬运估计车站(GS)被用来在Kuye河里估计沉积运输的特征。流量模量(每统一区域定义为年度平均分泌物，L/(s.km2))并且沉积运输模量(每联合起来定义为年度推迟的沉积运输区域，t/(年km2))在这研究被介绍为这个分水岭在流量和沉积产量估计变化。结果证明最高平均的月刊在Kuye河里在学习时期期间排出是在有一期平均月刊的8月的66.23m3/s88.9kg/m3的沉积集中。然而，最高平均的每月的沉积集中在Kuye河里的学习经期期间是125.34kg/m3并且发生在7月，它有多的42.6m3/s的平均分泌物不到在8月的平均每月的分泌物。在在Kuye河里的WenjiachuanGS的流量模量和沉积运输模量有，这被发现一清楚向下趋势。在到8月的从7月的夏天季节期间，在WenjiachuanGS的沉积运输模量在黄河上比在Toudaoguai和LongmenGS的那些高得多。容易在Kuye河分水岭和稀少的植被的erodible黄土为从Kuye河分水岭的极其高的沉积收益负责。Kuye河里的推迟的负担的谷物尺寸分发的分析被介绍。Kuye河里的推迟的负担的平均每月中部的谷物尺寸在2月是最大的然后减少直到6月。在7月，推迟的负担的平均每月中部的谷物尺寸接近另一座山峰并且减少直到9月。然后，推迟的负担的中部的谷物尺寸开始增加直到下列年的2月。然而，在在Toudaoguai和LongmenGS的黄河的推迟的负担的平均每月中部的谷物尺寸在早夏天和迟了的秋天之间