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1、10530201510181928TU411.3Studyonspecificcomparisonsystemandmechanicalpropertiesofsoil-rockmixtureinshallowstratumCandidateHuYinSupervisorAssociateProf.DongHuiCollegeCivilEngineeringandMechanicsCollegeProgramStructuralEngineeringSpecializationSoil-structure
2、InteractionDegreeMasterofEngineeringUniversityXiangTanUniversityDateMay201810m15%10%250%-1.0mm/min50%34Rc3E3IAbstractInthestudyofmechanicalpropertiesofthesoil-rockmixture,thetestsamplestakenfromtheactualprojectconsistofcomplexanddiversematerialcomposition
3、s,whichcausedtheissueTheconclusions,ofwhichthedegreeofdispersionishighandverifiabilityispoor.Inaddition,thesoil-rockmixturewasconsideredashomogenousbodyintheexperiment,andlessconsiderationwasgiventotheinfluenceofmacroscopicstructuralfactorsonthemechanical
4、behaviorofsoil-rockmixturethatwaslocatedinshallowsurface(within10metersfromthesurface)innaturalheapdepositionenvironmentofdifferentprojects.Theseproblemsbroughtgreatdifficultiestotheapplicationofexperimentalresultstoengineeringpractice.Therefore,fromthepo
5、intofviewofmaterialcomposition,thecompoundofspecificsoil-rockmixturematerial:thedegreeofweatheringofblocks,thetypeofparentrockandthemineralcompositionofthesubstratesoilwerethesame.Onthebasisofthelablarge-scaletriaxialtestsandverificationofreproducibilityo
6、ftestresults,theinfluencelawsofstonegradation,drydensity,stonedistribution,stonecontent,lithologyandotherparametersonthemechanicalcharacteristicswereexplored.Thetestconclusionswerecomparedwiththeexistingresearchresults,Trytoobtainqualitativeandquantitativ
7、einfluencesofthedifferencesoftheparentrockandstructuralcharacteristicsonthemechanicalbehavior,andpreliminarilyestablishaspecificcomparisonsystemforestimatingthemechanicalpropertiesofsuperficiallyweatheredsoil-rockmixture,whichcouldprovidemorereliabletheor
8、eticalguidanceforsimilarengineeringpractice.Themainresearchresultsweresummarizedasfollows:1Bystrictlylimitingtheidentityofstonesandmatrixsoils,thereproducibilityoftestdataforspecificsoil-rockmixtureunderthesamecondi
