受載條件下巖石電阻率特性的理論與試驗(yàn)研究.pdf

1、重慶交通大學(xué)碩士學(xué)位論文受載條件下巖石電阻率特性的理論與試驗(yàn)研究姓名：王俊璇申請學(xué)位級別：碩士專業(yè)：巖土工程指導(dǎo)教師：趙明階20120413ABSTRACTIntheconstructionofrockengineering，asexternalloadbroketheintemalstressandequilibriumstateandmakethestresschanged，Sowemustcarryonthemonitoring，

2、judgethestabilityanddamageofrocksUsingresistivitymethodtoobservatetheresistivitychange，pushingthemechanicspropertiesofrockandjudgeingtheinternalstressstateanddamage，whichcallsolvetheproblemsrelatedtostressstateButconside

3、ringthatlackofde印anddetailedresearchonresisitivi鑼propertiesofrockunderloadingnowmakeresistivitytestingisshortofthecorrespondingtheorysupportinpracticalprojects，SOthispaperputsforwardthetheoreticalandexperimentalresearcho

4、nresisitivitypropertiesofrockunderloadingThemainresearchcontentsandresultsasfollows：(1)Basedontheconductivepropertiesofrockonthebasisofstudythatinfluencefactorsofresistivitysuchascompositionandstructure，watercontentandde

5、greeofmineralizationporosityandshale，drawtheconclusionthatthedevelopmentofthepore，fracturesandthenatureoftheporewaterplayadominantroleinrockresistivitychange(2)Accordingtothedevelopmentandchangecharacteristicsofpore，frac

6、turesintheloadingprocess，usingthefracturemechanicstheoryanalysisthedeformationcharacteristicsofrockrelatetockporosityandvolumetricstrainwhichbymicrofractureclosed，expansionandpoencombinedwithArchieformulaestablishedtheth

7、eoreticalmodelofrockresistivitystressundersingleaxisloadingThroughtheexamplecalculationitconcludedtherockresistivitychangerulesunderstress(3)Inordertovalidatetherationalityoftheoreticalmodel，selectedthesandstone，mudstone

8、andlimestonetotestusedthehighdensityresistivitymethodtOmeasuretherockresistivitygettherockstress—straincurvesandrockresistivitystresscurvesunderthesingleaxisloading，Andcompared謝mthetheoreticalcurvestheresultindicatesthat

9、thetheoreticalresultsandexperimentalresultsissimilarItexplainedthetheorymodelCanreflecttherockresistivitychangecharacteristicsinloadingprocess(4)Combined、忻t11thechangecharacteristicsofrockstress—strainCurvesandtheinfluen