简介：SevereoperationalproblemsofsedimentdepositionhavefrequentlyoccurredinstormwatersewersystemsinShanghaicityduetotheflattopographyoftheareaandseriousillicitconnections.Tocontrolsewersedimentanditssubsequentialproblems,optimizedoperationplanswereproposedandaninnovativeperformanceassessmentmethodwasdeveloped.Simula-tionresultsdemonstratedthat,throughchangingthewayofpumpoperationandinstallingnecessaryactuatorsinthesystem,theoptimizedoperations,especiallybatchintermittentinterceptplan,effectivelyimprovedtheflowvelocityintheentiresystemindry-weathercondition.Inconclusion,theoptimizedoperationisaninnovativeideaforimprovingtheperformanceandsolvingtheproblemofsedimentdepositioninthesewersysteminShanghai,China.

简介：ThecharacteristicsofsuspendedsedimentimagecanbereflectedbythecoefficientsofbiorthogonalwavelettransformofCDF(2,2).Basedonthepowerdistributionindifferentscales,anadaptivealgorithmisproposedinthispaper,wherebythecoefficientsareadjustednon-linearly.Theparticleinformationcanbewellretainedwhiletheuselessbackgroundisremoved.Inthisway,satisfactorybinaryimagecanbeobtainedforfurtheranalysisofthesedimentparticle.

简介：Basedonthetensoranalysisofwater-sedimenttwo-phaseflow,thebasicmodelequationsforclearwaterflowandsediment-ladenflowarededucedinthegeneralcurvecoordinatesfornaturalwatervariable-densityturbulentflow.Fur-thermore,correspondingboundaryconditionsarealsopresentedinconnectionwiththecompositionandmovementofnon-uniformbedmaterial.Thetheoreticalresultsareappliedtothecalculationofthefloatopencaissonintheconstructionperiodandgoodresultsareobtained.