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1、JournalofGeophysicalResearch:SolidEarthRESEARCHARTICLERoleofcriticalstateframeworkinunderstanding10.1002/2016JB012967geomechanicalbehaviorofmethaneKeyPoints:hydrate-bearingsediments?ValidationofthecriticalstateframeworkthroughcomparisonwithShunUchida1,Xiao-Guang
2、Xie2,andYatFaiLeung2experimentalresultsonMH-bearingsoilbehaviorfromvarioussources?Quanti?cationofsigni?canceofeach1DepartmentofCivilandEnvironmentalEngineering,RensselaerPolytechnicInstitute,Troy,NewYork,USA,2DepartmentparameteroncapturingMH-bearingofCivilandEnv
3、ironmentalEngineering,TheHongKongPolytechnicUniversity,HongKongsoilbehaviorthroughvariance-basedglobalsensitivityanalyses?DevelopmentofseveralchartsforexperimentaldeterminationAbstractAproperunderstandingofgeomechanicalbehaviorofmethanehydrate-bearingsedimentsof
4、keyparameterstorepresentiscrucialforsustainablefuturegasproduction.Thereareanumberoftriaxialexperimentsconductedovergeomechanicalresponseofsyntheticandnaturalmethanehydrate(MH)-bearingsediments,andseveralsoilconstitutivemodelshaveMH-bearingsoilsbeenproposedtodes
5、cribetheirbehavior.However,thegeneralityofasophisticatedmodelisquestionedifitistestedonlyforalimitednumberofcases.Furthermore,itisdi?culttoexperimentallydeterminetheCorrespondenceto:associatedparametersiftheirphysicalmeaningsandsigni?cancearenotelucidated.Theobj
6、ectiveofthisS.Uchida,X.-G.XieandY.F.Leunguchids@rpi.edu;paperistodemonstratethatasimpleextensionofthecriticalstateframeworkissu?cienttocapturethexiao-guang.xie@connect.polyu.hk;geomechanicalbehaviorofMH-bearingsoilsfromvarioussourcesaroundtheworld,whilethesigni?
7、canceandy.yf.leung@polyu.edu.hkofeachparameterisquanti?edthroughvariance-basedglobalsensitivityanalyses.Ourresultsshowthatthein?uenceofhydratescanbelargelyrepresentedbyonehydrate-dependentparameter,p′,whichcdCitation:controlstheexpansionoftheinitialyieldsurface.
8、ThisisvalidatedthroughcomparisonswithshearingandUchida,S.,X.G.Xie,andY.F.volumetricresponseofMH-bearingsoilstestedatvariousinstitutesunderdi?erentcon?ningstressesandL
