壩基深厚覆蓋層滲流場與應(yīng)力場非線性耦合研究.pdf

1、河海大學(xué)碩士學(xué)位論文壩基深厚覆蓋層滲流場與應(yīng)力場非線性耦合研究姓名：劉萬忠申請學(xué)位級別：碩士專業(yè)：地質(zhì)工程指導(dǎo)教師：周志芳20050601Abstract：ThethickoverburdenlayeriSaspecialgroundsillthatiSprovidedwithloosestraucture，incontinuouslithologycomplicatedstylesofformationandwhosechangeof

2、mechanicoAcharacterstakesonasymmetricⅥ飛enthehighearth—rockfilldamisfoundeditiSverysignificanttesearchdistributingofseeDageandstressfieldeffectivelyandwithreasonforestimatingcorrectlystabilizationofbodyandbaseofdamSeepage

3、andstressfieldaretiedtogetherwit1inthelayerthatareinteractionalThisisacouplingissueaboutresearchtothemInordertofindout廿1eessenceofdiversifiedmodelsandadvantageanddisadvantageoftheirrealizationtheanalysisandcomparingabout

4、themaredevelopedUsingthegotsurveyinformation，geologicconditionsareanalyzed，andpenetrabilityofthedeepandthickoverburdenlayeLrockandsoilinthebasisofdamarediscussedindetailinthebedofpubugouriverTheresultisfoundthatthedeepan

5、dthickorerburden1ayerissoftgroundsillwhosegeologiccharacteristicwillchangedwhenloadisthrownonitBasedonsomeprecedingresearchworkgroundonKozeny—CarmanequationthenonlinearcouplingnlMneticmodeliSestablishedaboutseepagefielda

6、ndstressfieldonthedamanditsSUlTOHndingsThismodelisexertedtothepracticeandtheevolutivelawsareobtainedfollowingtimeandspaceaboutpomsityandinthedeepandthickoverburdenlayerSimultaneityregressionanalysisiscarriedoutaboutthehy

7、draulicconductivityvalueandcorrespondingeffectivestressValuethataresolvedbytheabovesimulationandtherelationcurvesaredescribedTherelationiSappliedtoFEN也ABMultil；)laysicsModelingsoftwareinordertoprobeintoitsnonlinearcoupli

8、ngworkDiscussingthesensitivitygradebetweenleakagequantityofthebaseofthedamandaveragehydraulicheadgradientthroughthepurdahandpenetrabilityofthepurdahandcutoffwallinordertOprovetheywillaffectthedam’Ssafetynesensitivityanal

9、ysisiSprocessedaboutanisotropyofthehydraulicconductivityinorderthatleakagequantityofthebaseofthedamandaveragehydraulicheadgradientthroughthepurdaharevariationalfollowingtheanisotropicgradeinthedeepandthicklayerThesimulat

10、ionshowsthatthenonlinearcouplingworkreflectthenantrallawsbetteraboutseepagefieldandstressfieldSo，itisnecessarytointroducethismechanismKeywords：earth—rockdam；deepandthickoverburdenlayer；nonlinearcoupling；seepagefield；hydr