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【英文标准名称】:StandardGuidesforUsingRock-MassClassificationSystemsforEngineeringPurposes
【原文标准名称】:工程技术用岩石质量分级系统的使用标准指南
【标准号】:ASTMD5878-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D18.12
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:classification;classificationsystem;coalmineroofrating(CMRR);Japaneserockmassclassificationsystems;newAustriantunnelingmethod(NATM);Q-system(NGI);rockmass;rockmassratingsystem(RMR);rockmaterialfieldclassificationsyst
【摘要】:Theclassificationsystemsincludedinthisstandardandtheirrespectiveapplicationsareasfollows:RockMassRatingSystem(RMR)orGeomechanicsClassification8212;Thissystemhasbeenappliedtotunneling,hard-rockmining,coalmining,stabilityofrockslopes,rockfoundations,borability,rippability,dredgability,weatherability,androckbolting.RockStructureRatingSystem(RSR)8212;Thissystemhasbeenusedintunnelsupportandexcavationandinothergroundsupportworkinminingandconstruction.TheQSystemorNorwegianGeotechnicalInstituteSystem(NGI)8212;Thissystemhasbeenappliedtoworkontunnelsandchambers,rippability,excavatability,hydraulicerodibility,andseismicstabilityofroof-rock.TheUnifiedRockClassificationSystem(URCS)8212;Thissystemhasbeenappliedtoworkonfoundations,methodsofexcavation,slopestability,usesofearthmaterials,blastingcharacteristicsofearthmaterials,andtransmissionofgroundwater.TheRockMaterialFieldClassificationSystem(RMFCS)8212;Thissystemhasbeenusedmainlyforapplicationsinvolvingshallowexcavation,particularlywithregardtohydraulicerodibilityinearthspillways,excavatability,constructionqualityofrock,fluidtransmission,androck-massstability(11).TheNewAustrianTunnelingMethod(NATM)8212;Thissystemisusedforbothconventional(cyclical,suchasdrill-and-blast)andcontinuous(tunnel-boringmachineorTBM)tunneling.Thisisatunnelingprocedureinwhichdesignisextendedintotheconstructionphasebycontinuedmonitoringofrockdisplacement.Supportrequirementsarerevisedtoachievestability(6).Note28212;TheAustriancode(7)specifiesmethodsofpaymentbasedoncodingofexcavationvolumeandmeansofsupport.TheCoalMineRoofRating(CMRR)8212;Thissystemappliestobeddedcoal-measurerocks,inparticularwithregardtotheirstructuralcompetenceasinfluencedbydiscontinuitiesintherockmass.ThebasicbuildingblocksofCMRRareunitratings.Theunitsarerockintervalsdefinedbytheirgeotechnicalproperties,andareatleast0.15m(6in.)thick.Theunitratingsarecombinedintoroofratings,usingadditionalgeotechnicalcharacteristics(8).JapaneseRockMassClassificationSystems8212;TheJapaneseSocietyofEngineeringGeologyhasrecognizedsevenmajorclassificationsystemsinuseinJapan(9).Thesearesummarizedin4.1.8.1-4.1.8.7,withoutadditionaldetailsinthisguide.Rock-MassClassificationforRailwayTunnelsbyRailwayTechnicalResearchInstitute8212;Rock-massesareclassifiedbasedonthevaluesofP-wavevelocity,unconfinedcompressivestrengthandunitweight.Supportpatternsfortunnels,suchasshotcretingandrockbolting,isrecommendeddependingupontherock-massclassificationobtained.Rock-MassClassificationforTunnelsandSlopesbyJapanHighwayPublicCorporation8212;Thissystemclassifiestherock-massusingRQD,P-wavevelocity,unconfinedcompressivestrengthandunitweight.Rock-MassClassificationfo......