Role of critical state framework in understanding geomechanical behavior of methane hydrate-bearing sediments英文资料

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1、JournalofGeophysicalResearch:SolidEarthRESEARCHARTICLERoleofcriticalstateframeworkinunderstanding10.1002/2016JB012967geomechanicalbehaviorofmethaneKeyPoints:hydrate-bearingsediments•ValidationofthecriticalstateframeworkthroughcomparisonwithShunUchida1,Xiao-Guang

2、Xie2,andYatFaiLeung2experimentalresultsonMH-bearingsoilbehaviorfromvarioussources•Quantificationofsignificanceofeach1DepartmentofCivilandEnvironmentalEngineering,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,itisdifficulttoexperimentallydeterminetheCorrespondenceto:associatedparametersiftheirphysicalmeaningsandsignificancearenotelucidated.Theobj

6、ectiveofthisS.Uchida,X.-G.XieandY.F.Leunguchids@rpi.edu;paperistodemonstratethatasimpleextensionofthecriticalstateframeworkissufficienttocapturethexiao-guang.xie@connect.polyu.hk;geomechanicalbehaviorofMH-bearingsoilsfromvarioussourcesaroundtheworld,whilethesignifi

7、canceandy.yf.leung@polyu.edu.hkofeachparameterisquantifiedthroughvariance-basedglobalsensitivityanalyses.Ourresultsshowthattheinfluenceofhydratescanbelargelyrepresentedbyonehydrate-dependentparameter,p′,whichcdCitation:controlstheexpansionoftheinitialyieldsurface.

8、ThisisvalidatedthroughcomparisonswithshearingandUchida,S.,X.G.Xie,andY.F.volumetricresponseofMH-bearingsoilstestedatvariousinstitutesunderdifferentconfiningstressesandL