软岩力学特性研究-郭志

41996JournalofEngineeringGeologyVol.4SeP.No.31996l,,(100029)(100029),()1,,,,,22.1(1),,,(),,(2),,,2.2,,:19950624804,:3(1),;(2),[l,111Table1Resultofslaekingtestofineompetentroeks/%%%IIIIIIIII.111I.222I.sssI.1112.6661.333111112222222t3333333l00077744433344444445555555t1.8880.9990.111116666666t77777771.4440.55555558888888884445.2224442.1111111111116661111666444111111111.66607770,111118884m82.55580.55576667333,999,2966695.77795.55594.999lllll00056666377727772111:;;;29.6661555955555523336665553.555777777777777777777777777777777777777777777777777777111677759995111::::94449000877785551555t1222999555333(((1~7)(s~10.13,14)(--~2)___{{{999{{{\\\\\\\\\\\\\\\\\\\\\\\\\\\\\...\\\\\\...\\\lll\~.......1..Fig.1Contributionoftheslaekingeyeletoslackingdurability3:(3),:(a),,,,,(),(b),,,,,,4(1)2,,(2),,,,,(2)TableZ2Resultoffrozenmeltingtestofineompetentroeks/MPaaa/MPaaal~44418.4441.3X103330.333,,,5~88817.8881.2X103330.3555559~11116.1114103330.44412~14445.4443.9X102220.4555551~66627.8881.6103330.29997~100026.4441.2710333032222211~1333222221.3X103330.355514~166620.3331.06X103330.422222l~33326.5551.2X103330.2999,,,4~77725.6661.15103330.2888888~100024.2221.03X103330.33311~133324.2220.95X103330.44444()110000000()9444444444()13555555555()1022222222244.3,,3,,E,50.380.365J,,Jl.O0.30.2.d\Eto1015/)3456/m7892Fig.2RelationshiPbetweenthemeehanieal3EFig.3RelationbetweenmodulusofPropertiesandwatereontentdeformationEofroekmassanddePthofborehole4.4;,,:9%50%;65%55.1,,,,,4~545,,,4Il,I,,,4ll3:5/102MPa4Fig.4Contributionoftheeonfiningpressuretoeompressivestrength,,,.d1020a./MPa5.25,Fig5Relaionshipbeweennormal,stressandshearstrength:(1),,,[ja](1)(2)4I,,ac,]a:(2)(3),,,,[[][(3)844.1992..1991,l~18.:..1987..(),120~128.:..1994...4,24~26..1987...1~9.:..1988.,n4~ng.:.‹lJJesJ11?’J.LLLLASTUDYONTHEMECHANICALPROPERTIESOFTHEINCOMPETENTROCKSGuoZhi(InstituteofGeolo,AcadeiaSiniea,Beng100029)AbstraCtThispaperdealswithbasieeharaeteristiesofineompetentroeks.Aeeordingtoex-perimentresultsoftheexpansibilityandslakingdurability,frostthawingaetion,andmeehaniealpropertiesoftheweakroeks,theeffeetoftimeandenvironment(watereon-tent,temperature,stressintheearth5eurst)oftheroekoeeurreneeonthemeehaniealpropertiesoftheweakroeksareanalysed.Thevariationregularitiesofthemeehaniealpropertiesofdifferentroekelementsaresummarized.TheauthorproPosetheprineiplefordeterminingstrengthofweakroeks.KeywordsWeakroek,Expansibility,Slakingdurability,Frestthawing,Env-iornment,Critiealuniformratestress.