应用地球物理2：电法勘探原理与方法

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1、应用地球物理2：电法勘探原理与方法Applicationinvariousgeologicalexploration・Section2naturalelectricfieldmethodThecauseanddistributionlawofnaturalelectricfieldmethod:naturalpolarizationofrock,oreandstone,naturalpolarizationofelectronconductor,andnaturalpolarizationofionicconductor・Practicalapp

2、licationofnaturalelectricfieldmethod:oilandgasfieldsurvey,metaloreexploration,hydrogeologyandengineeringgeologysurveyNotice:grasptheprincipleoftheabovetwomethodsandtheapplicationinspecialgeologicalexplorationThesecondchapterisinducedpolarizationmethodSection1ofthetheoreticalb

3、asisoftheinducedpolarizationmethodThebasictheoryofrockinducedpolarizationmechanism;electronicconductormechanismofinducedpolarization,ionconductormechanismofinducedpolarizationofrockandore:DCinducedpolarization,ACinducedpolarization;timedomainandfrequencydomainmeasurementparam

4、eterclefinitionandphysicalmeaning;equivalentresistivitymethod,inducedpolarizationfieldboundaryconditionsandsolutions;theconceptofapparentpolarizationtherateof.Itisimportanttoknowtheformationprocessandpropertiesoftheexcitationpolarizationmechanism,toknowthedefinitionandexpress

5、ionofmeasurementparametersintimedomainandfrequencydomain,andtoclarifythephysicalsignificanceofapparentpolarizability・TheIPanomaly,2commonlyusedloadingIntermediategradientmethodofinducedpolarization:theanomaliesoftheladderinthestimulatedelectricfieldonasphericalorebody,thesurf

6、acepolarizationintheuniformelectricfieldandthesolutionofthepolarizationfieldofthebodypolarizedsphere,andthelawoftheapparentpolarizationanoma1y.Unitedsectiondevice:thesolutionofsourcepolarizationfieldandtheanomalyofIPprofilemethodwiththepresenceofsphere・Asthepolarizationcurvet

7、heoryofsphere・Anomalouscharacteristicsofapparentpolarizationincombinedsectionofobliqueveins・Dipoledevice:theanomalouslawofdipoleprofileinregularbodies・profilecontourmapIPsoundingdevice:characteristicsofIPsounding・CharacteristicsofIPsoundingcurvesonspheresandplates・Experimentf

8、our:modelexperimentofexcitingladderdeviceItisimportanttoknowthedistr