泥石流运动过程的能量聚涨、突变与衰减动力学研究

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1、重庆交通学院硕士学位论文泥石流运动过程的能量聚涨、突变与衰减动力学研究姓名：吴四飞申请学位级别：硕士专业：水工结构工程指导教师：陈洪凯;唐红梅20050322AbstractABSTRACTDebrisflowisonekindofnaturaldisaster，whichfrequentlyOccursinmountainareainourcountry．Researchondebrisflowhasachievedmanyoutcomes，buttheresearchaboutitsmovementmechanismisstillweak，a

2、ndespeciallytotheenergyresearchaboutdebrisflowsmovement．Basedonenergytransformrelation，thepaperhasprofitablyresearchedonenergyconglomeration,transport，mutationandattenuationandSOon．T11emainconclusionsinclude：1)Accordingtotheconditionsofdebrisflowsformation，thepaperanalyzesthe

3、threemainstagesintheoriginalformationprocessofdebrisflows，andclearlyconfirmdebrisflowsmovementenergysourceandenergycarries．Generalizethedebrisflowsenergyaccumulationmodesfromthedistinctnessofenergysuppliedmodeintheprocessofformation．Establishthemethodestimatingtocriticalenerg

4、ywhiledebrisflowsbreakout，andconsidertheprimaryenergysourceofdebrisflowscomefromgravitationalpotentialenergyofthelaxsoilinhillsideandvalleyaftertheexampleanalysis．2)Theinfluencefactorsofdebrisflowsmotionarediscussedsuchasthecharacterofdebrisflowsfluid，thegranuleshapeandclasse

5、s，solidvolumefraction，thedeclinesratioandboundaryconditionofditchbedetc．Debrisflowsfluidviscidity，inflexibilitycollidesbetweengranuleeachother，andfrictionbetweendebrisflowsandditchbedareanalyzedtotheprocessofenergydissipation，anddeducetheequationthatenergymeltoffincorrespondi

6、ngmoment．3)Thepaperestablishestheenergyconservationequationoftwo—phaseequivalentdebrisflows，findoutthatthesystemenergyincrementisthesumofexternalforce，internalforceandagainstthrustwork，andthechangeofdebrisflowsgravitationalpotentialenergy．Afteranalyzingthechangeofdebrisflowse

7、nergyinexperimentgroovethroughmodelexperiments．theauthor也inkthatpotentialenergydecidedimensionofunitmassbeginningenergy，thenpotentialenergygradatetokineticenergyandkineticenergygraduallyenlargeinthetotalenergywhiledebrisflowsareflowing．4)Thepapergetspotentialenergyfunctionoft

8、hedebrisflowsenergymutation．andconsidersthattherelationbetweenthesiz