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StudyofdeterminationmethodsofrockmassmechanicalparametersI:
In - situtestandquantitativeanalogy
WANGXiaogang
(StateKeyLaboratoryofSimulationandRegulationofWaterCycleinRiverBasin,
ChinaInstituteofWaterResourcesandHydropowerResearch,Beijing 100038,China)
Abstract:Aimingattheproblemofreasonabledeterminationofthemechanicalparametersofrockmassinengi
neering ,thesystematicresearchonin - situtesttechniques,quantitativeanalogymethodsandnumericalsimulations
wasconducted ,andasystem forthecomprehensivedeterminationofrockmassmechanicalparametersincluding
“oneequipment,onelibraryandoneplatform”wasestablished.First,thetestequipmentforevaluationofrock
massqualityduringdrillingprocessanddeterminationofmechanicalparametersofrockmassbasedonboreholewas
developedinthispaper ,andamethodtoevaluaterockmassqualitybasedonthemeasuredparameterswhiledrill
ingandthequantitativerelationshipbetweenthestrengthandwearresistanceofrockmassandtheparameterswhile
drillingwasproposed.Thetechniqueofquicklyobtainingtheshearstrengthandcomprehensiveelasticmodulusof
rockmassfromdifferentrockstratabyelasticmodulusandsheartestinboreholewerepresented.Then ,adatabase
composedoftheshearstrengthparametersofrockmassof681groupsfrom 81projectswasconstructed,andthe
statisticalcharacteristicsoftheshearstrengthparametersofdifferentrockmasswerestudied.BasedonBayesmeth
odandreliabilitytheory ,aquantitativeanalogymethodwasproposedtodeterminerockmassparametersbyuseof
thesampledatainthedatabaseandfewtestresultsinengineering.
Keywords:rockmassmechanicalparameters;rockmassqualitytestwhiledrilling;drillshearmodulustest;da
tabaseofshearstrengthparameters ;quantitativeanalogymethod
(责任编辑:李 娜)
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