简介：ThispaperexaminestheexperimentalstudyoninfluenceofmaterialcomponenttononlinearrelationbetweensedimentyieldanddrainagenetworkdevelopmentcompletedintheLab.Theareaofflumedrainagesystemis81.2m2,thelongitudinalgradientandcrosssectionslopearefrom0.0348to0.0775andfrom0.0115to0.038,respectively.Differentmodelmaterialswithamediumdiameterof0.021mm,0.076mmand0.066mmcoverthreeexperimentseach.Anartificialrainfallequipmentisasprinkler-systemcomposedof7downwardnozzles,distributedbyhexagontypeandagivenrainfallintensityis35.56mm/hr.cm2.Threeexperimentsaredesignedbyprocess-responseprincipleatthebeginningtheψshapedsmallnetworkisdugintheflume.Runningtimespansare720m,1440minutesand540minutesforRunsⅠ,ⅣandⅥ,respectively.Threeexperimentsshowthatthesedimentyieldprocessesarecharacterizedbydelayingwithavibration.Duringnetworkdevelopmenttheenergyofadrainagesystemisdissipatedbytwoways,ofwhichoneisincreasingthenumberofchannels(rillandgully),andtheotheroneisenlargingthechannellength.Thefractaldimensionofadrainagenetworkisexactlyanindexofenergydissipationofadrainagemorphologicalsystem.Changeofthisindexwithtimeisanunsymmetricalconcavecurve.Comparisonofthreeexperimentsexplainsthatthevibrationandthedelayingratioofsedimentyieldprocessesincreasewithmaterialcoarsening,whilethenumberofchanneldecreases.Thelengthofchannelenlargeswithmaterialfining.Thereexistsnon-linearrelationshipbetweenfractaldimensionandsedimentyieldwithanunsymmetricalhyperboliccurve.Thebsolutevalueofdelayingratioofthecurvereduceswithtimeunningandmaterialfining.Itischaracterizedbysubstitutionofsituationtotime.
客服QQ：30444492琼网文【2021】1550-113号
增值电信业务经营许可证：琼B2-20210322
出版物经营许可证：新出发龙华出字第(2021)009号
广播电视节目制作经营许可证：(琼)字第00779号
版权所有 ©2002-2024 期刊网(www.qikanchina.com) 琼ICP备2021005105号
