复合岩石的破坏准则

199011136OURNALOFCHONOINGNIVRSITY01.13,.6Nov.199AFAILURECRITERIONOFCOPOSITEROCKYangYoukuiiangWeimin()oh:Cmb..(C:,)(;),.,;;;;:TU45ABSTRACTAfailureeritcrionforeompositeroeks15di,eu::edinthispaperbasedontheassumptionthateaehoftheireomporentsfollowstheMohrCoulombstrengththeory.Theeompositcequivalentmcansemployedenablcsth,formulationofthefailureeriterionforlheeompositeroekto:definedbythestrengthparameters(e,)andgeometrieparametr()ofeache(,mponnt;ndthcprocedt:reforidentifyingtheparametersofeaeheomponent,startingfromtheexpermentaldataofeompo:iteroek,15outlined.Theeriterionenablesthedeseriptionwithfairaeeuroeyoftheultimatebehaviourofeompositeroeksubmittcdtotriaxialtestsondprovidesamoreaeeoatecoutemeansforrockengineeringin]ayeredrockKvwoRosmpositro,k;failt:re,iterin:mp,itqt:ivalentmns:tlniteellofeompositoroek:failureeonfine:layerinterfaeeO,,1991117..~-~;~..,.,~1990,1,,,,.--,,:(l);(2)Moh,Coulomb:(3),.,;(4),,(),,(])lb.,.____:zzz~¼¼,,1ljjjjjjj:,lllllhhhh1,::()+:(2):,,*~h/h,i1,2,a(l)(x,4),2,,)(r):,-{{,}l{;;,::,:;,,a+:a,A;A:,:={;=.(,,+:q,,:A.,il,2}6:”1(2):1:,!az+C,i1,2(4):,=tg,:C,i.l(,),(4):,a,a2)2,a+ajl++Q2(l2)(H)(a)(b)l.,I,:+:(c)a,,,(2)AH.,AH(2).:(,)/2:,,.;tgZa.AHil,2(2)(5)usoP1ula,:,!}:(.+C){;.(1+,)(,+e)2u,,g:2(6)a,,,L6)AH:uPI}().,(6),1#,c,,,,/:/2:1utg!=101,:+cl(7),,(6)(7)a..a.,,(l0.........J.~~)(,,;:::)ctgZa,,,,,,(,.+.)*2(l+:)(:+c:),(,+c:(8),aa,:*a,,,,araa,(7)(),25),lutgZal~+c:_9)2,:,a,an,suPlu}(:):suPlul(,+c,)1ctgZa}(10)(5)(1+)(u+v)(,;+:,,+e,)2=o(11)},(u,)(u,U)3,,,,(6),(10):tgZa:R,./;,p,/:+2/:)/,.pa(4),p,/s0/0R63(u,cl,c:=3._30,:40,:;=4Rac:1,c:=3,l=30,,:=o,5(a),30,(b)4Q.136:a.=45./2:/212),(,,:),{(li:-RR()_1+sin,.--,~1Sln:Zc,,,:.co,1:in(13)..P-+O,,cQ,Ra,(12)222,c,ca.,,,.6(,):=1,:=2,:30,:=40,==.5(a)er=1.5,I=45(b)cl0.75,20(e)el0.75,r452,,(2):1,,1(,,+c,(14),c,5,:2.1,,cr/re:/,(14),(5a),2.2,:,e/e:/,,(a,,,,,),(14)(5b),aa,()(14).,.2.3z,,ez/Ie:/:(sc){,,lt11),1090Jaeger43,,(6)::c::2.,,,,,.5.”06040,.lx10}o\/w~t4,l_}030V60090300600906t(5()()667,,(12):,.a,,(13),,.,(6),a~0,.:,,__?_:,_,,,.,,,)a=:(+c)+(l+)(,+c;)(15)a=0(15)(t)()():+;;.(l+,)(16)(]6):tg:,(1:)c:.,apo6:6AlliBoehl,=:0.5,c.1.0MPa,c:=2.15MPa,:=30,32.5,(4a,,a457lamGra6.::=0.5,:44.8a,72.4M,=30:33,.6,,,,,.=172Ma,a,a.(12),.,(4),,,41.,Mohcoolo.2..3.a.(,8),;,a=450/2~,(c:,:),_4.,,,l,.,,1953,6(3):23392.:,1986,1151203SacehiG,TaliereioA.Anoteonfailureeonditionfrlaryeredma*erialo.Meeeaniee,1987,22,97101JaegerJC.Searfailureofaniootropieroeks.GeolMag,lgeo,97:65725Alliroto,BoehlerJp.Evolutiondeproprietesmeeaniquesd,une:oehestratifioesousp,essiondeeonfinement.proe4thIntConfxSRM,Montreux,xg79,6472.6MelamoreR,GrayKE.Themeehaniealbehaviourfanisotropie:oeks.TransAmSoeMeehEng::,1)6.89:6272