铬污染土壤电阻率和复电阻率实验方法分析

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1、ABSTRACT东华理工大学研究生毕业论文中文摘要首页用纸THESIS:ResistivityandComplexResistivityMethodStudyofChromium-contaminatedSoilSPECIALIZATION:SolidGeophysicsPOSTGRADUATE:LuXiaochunMENTOR:GongYu-ling，proffessorABSTRACTInrecentyears,thedevelopmentofChineseindustrybecomesfasterandfaster.Buttherearemanyenv

2、ironmentalpollutionproblemsintheprocessofrapidindustrialdevelopment,especiallyheavymetalcontaminationofsoil.Geophysicalmethodsduetoitsuniqueadvantages:fast,efficient,economic.Soithasbeenusedforthedetectionofsoilheavymetalcontaminatedsoil.Asthesoilhaspropertiessimilartorock,butnotex

3、actlythesameastherock.Thetextureofsoilisloose.Whenthemoisturecontentofsoilincreased,thedegreeofthegapbetweensoilparticleswillalsochange.Sosoilhasitsownspecificcomplexity.Inthisthesis，largenumberofdomesticandforeignstudiesofenvironmentalgeophysicalmethodsandcharacteristicsofheavymet

4、alcontaminatedsoilhavebeenanalyzed.Afterthatwedevelopedareliableexperimentaldevicewhichcanbeusedmeasurecomplexresistivitymeasurementsandresistivityofsoilindoor:Everyinstrumentresearchanddevelopmentformulationaspectshavebeenverifiedbyexperimentandempiricsummarizedinordertoensureaccu

5、racy,stabilityandrepeatabilityofthemeasureddata.Thedeviceisdividedintothetimedomainandfrequencydomainmeasurementpart.Timedomain：PoweredsupplyelectrodesnamedABof―Millersoilbox‖;MeasuringelectrodenamedMN;Timeofvoltagechargeanddischarge;Dischargecurveofvoltage;Aboveofallhavebeenstudie

6、dbysystematicexperimental.Frequencydomain:theestablishmentofthedeviceofcomplexresistivitymeasurements.Waveformandfrequencyofthevoltage,measurementacquisitionmodeareunifiedbasedonLabview.Thencedeviceofcomplexresistivitymeasurementsofsoilindoorhavebeendevelopedtocomplete.Thenthedevic

7、ewasusedtodophysicalsimulationexperiment:Get10soilsampleswhichwereconfiguredaccordingtotheconfigurationstandardsofsoilinto10soilsamplesofdifferentconcentrationofpollutants.Eachsoilsamplewasdividedintothreekindsofdifferentporosityandfourdifferentmoisturecontents.Thephysicalparameter

8、sthatcanbemeasured:Resisti