粘性泥石流運動機理及數值模擬研究.pdf

1、蘭州理工大學碩士學位論文粘性泥石流運動機理及數值模擬研究姓名：龔成勇申請學位級別：碩士專業(yè)：水利水電工程指導教師：李仁年20090427碩士學位論文AbstractThemovementofdebrisflowisacomplexandunsteadymultiphaseflow，studyingitsmovementmechanismisOIICoftheimportantcontentsofdebrisflow，andbelongs

2、totheforefrontandinterdisciplinarytheoreticalfoundationondebrisflow11塢studyinvolvesfluidmechanics，soil，geologydisasterscience，hydrology，computationalmechanics，andSOonwhichisainterdisciplinaryandmultidisciplinaryscienceTh

3、estudyofmovementmechanismimprovesthedcbrisflowdisasterpreventionandcontrolling，canprovideatheoreticalsupportandguidance1nhenumericalanalysisofviscousdcbrisflowintegratesdebrisflow。computerscience，mathematicalphysicscalcu

4、lations，softwareandotherscientificdisciplines，becominganewcrosscompoundformation，whichisclassifiedinanewfieldofthestudyofcomputerscienceonthemudrockflow，Thevalueissignificancenotonlyinresearchbutalsopracticalapplicationo

5、ftheoryinordertoanalyzeitsmovementcharacteristics，whichrevealsthemechanismofviscousdebrisflowsummarizingsomepreviousresearchresultsofdebTisflow，andbasedOnthephenomenonoflaboratorytestandtheresults，thispaperdiscussestheoc

6、currence，startup，abrasion，theaccumulationofviscousdebrisflowandotherrelatedmechanism；andthusUSeStheresultsoftheanalysistoestablishthebasiccharacteristicsframeworkmodelTobetterexplaintherelationshipofeachphaseinviscousdeb

7、risflow，thepaperutilizessomebasistheoryofthehydraulicfluiddynamics，inthecertainassumptions，derivesagroupcontrolequationsofthemovementofviscousdebrisflow，atthesametimesimplifiesitandformsafiniteelementmethoddiscreteequati

8、onsandwholefmitcelementequation；Similarly，consideringinteractioIlsbetweentheviscousslurryandthevalleybanksestablishescontrolequationsoftheviscousdebrisflowandthevalleybetweenthebanksandadiscretecoupledequationsformat；atl

9、astthepaperdependsoncomputersimulationanalysisofviscousdebrisflowtoanalyzeitscharacteristicsfromtheviewofvisualizationoftheviscousdebrisflowmovementFinally，thepapercombinesthesimulationresultsandexperimentalphenomenatosu

10、mmarizeviscousdebrisflowCharacterizationanditsmovementmechanismThemainresultsachievedinthepaperareasfollow：1)putforwardthatdebrisflowcharacteristicsbelongstothemacro—characterizationoftheitsmovementmechanism，SOthestudych

11、aracteristicsofdebrisflowshouldrevealthemechanismofdebrisflowmovementOnthisbasis，thepaperconstructsthebasiccharacteristicsframeworkmodelbyanalyzingthesummarythecharacteristicsofviscousdebrisflowmovement；∞onbasisoftheoryo

12、fthehydraulicfluiddynamics，derivesagroupofcontrolequationsofthemovementofviscousdebrisflow，andsimplifiesitandformsafmitcelementmethoddiscreteequationsandthewholefmiteelementequation；Similarly，consideringinteractionsbetwe