電阻率法在污染土評價(jià)與處理中的應(yīng)用研究.pdf

1、東南大學(xué)博士學(xué)位論文電阻率法在污染土評價(jià)與處理中的應(yīng)用研究姓名：韓立華申請學(xué)位級別：博士專業(yè)：巖土工程指導(dǎo)教師：劉松玉杜延軍20051220AbstraetAbstract1rhispaperisconsistedofthreeparts，flrsfly，throughtheexperimentalsmdyonelectricalresistivitycharacterizationofcontaminatedsoilneartheYa

2、ngziRiverinNarding，therelationshipbetweenelectricalresistivityformationfactorshapefactoranditswatercontentvoidratio，typeandconcentrationofcontaminatedcomponentandtemperatureetalisfoundAndtherelationshipbetweenelectricalr

3、esistivityformationfactorshapefactorofheavymetalcontaminatedsoilandconcentrationissmdiedindetailFurthermore，theprincipleandprocessofevaluatingcontaminatedsollusingelectricalresistivitymetIlodareexplainedatthesametime，weh

4、avesetuptheevaluatingstandardforelectricalresistivitysuittoexperimentalsiteSecondlythrou啦studyonthecontaminanttransportmodel，theprincipleofmigrationofcontaminationcomponentingroundwaterisopenedoutbesidesthedominatingform

5、ulasandtheanalyticalsolutionsforpurediffusionandadvectivediffusionofcontaminanttransportarepresentedinthispaperAndthatfinitelayeranalysisinoneandtwodimensionsiscarriedthrouIglllaplacetransforms，intheend，numericalsimulati

6、onofexperimentalsiteisputupandthechangeofcontaminantwithin200yearsisforecastedThcthirdpartofthispaperisexperimentalstudyonthecharacterofelectricalresistivityofsoilcementInthisparttherelationshipbetweenelectricalresistivi

7、tyandthecementmixingratio，watercontent，degreeofsaturation，watercementratio；curingtimeandstrengthisstudiedisstudiedAlso，thechangetrendforstrengthandpermeabilityofsoilcementafterpollutionisexplainedSothemainresearchresults

8、are舔follows：(1)TheelectricalresistivityformationfactorandshapefactordecreasewithincreaseofwatercontentThehigllerthewatercontentis，theliRlerthechangeextentofelectricalresistivityandformationfactorate，butshapefactorchangel

9、iRlewithdifferentwatercontentElectricalresistivityandformationfallwithaccretionofvoidratiohowevertherelationshipbetweenshapefactorandvoidratioisdifferentVdhencontaminantconcentrationissmallerthan03％shaPCfactordecreaseswi

10、thincreaseofvoidratiobutwhencontaminantconcentrationisgreaterthan03％。shapefactorhoistswithincreaseofvoidratioAtthesametime，themoreseriousthesoilspollute，thelowerelectricalresistivityis，andthehigherformationfactorandshape

11、areAllofthreedepresseswithriseoftemperature(2)Forthisexperimentalsite，usingelectricalresistivityandformationfactorcantestcontaminatedsoilwhenwatercontentislower珊lenwatercontentbecomeshigherelectricalresistivityandformati

12、onfactorwillchangelittle∞thetestresultisnotverygoodButformationfactormethodcanextendthetestscopeanditworkbetterwhenwatercontentislowerShapefactormeⅡledigsuitableforallthewatercontentandthetestresultisbetterthanothermethe

13、dsHoweverinthesometimethesmalldistancebetweenseriouscontaminatedlineandmoderatecontaminatedlineishappened。80whentestingcontaminatedsoil，weshouldtakeintocountallthe也reefactorsForthesollwhosecontaminantconcentrationisveryh

14、i曲，allthemethodsdon’tworkverywell，themainreasonisthattheychangeverylitterinthissituation。(3)Themaincontaminanttransportmodelsareadvectivetransportdiffusivetransportdispersionandsorptien，Whencoefficientofpermeabilityorhyd

15、raulicgradientistoosmall，groundwaterflowsslowlyevennoflOWthemainway01“onntaminanttransportisdiffusiveinthiscircumstanceWhenencountenngstrongaquiferduringcontaminanttransport，dispersionishappenedIntheengineeringapplicatio