岩石质量指标RQD与工程岩体分类

1004-9665/2000/08(03)-0351-06JournalofEngineeringGeology工程地质学报RQDX杜时贵¹　许四法¹　杨树峰¹　程俊杰º　王思敬»(¹310027)(º310012);(»100029)RQD,RQDRQD:TU452:AAPPLICATIONOFROCKQUALITYDESIGNATION(RQD)TOENGINEERINGCLASSIFICATIONOFROCKSDUShi-gui¹XUSi-fa¹YANGShu-feng¹CHENGJun-jieºWANGSi-jing»(¹ZhejiangUniversity,Hangzhou310014);(ºZhejiangBroadcastUniversity,Hangzhou310012)(»InstituteofGeologyandGeophysics,ChineseAcademiaofScience,Beijing100029)AbstractSomeproblemsofdeterminnationofrockqualitydesignation(RQD)inrockengineering-classificationisdiscussed,andarationalapproachisstudied.Classificationarediscussed,andarationalapproachtocorrectchoosingRQDvaluesisstudied.KeywordsRQD,Engineeringrockmass,Rockclassification.,,,(),,(RQD),RQD,RQD,RQDRQD,RQD,,RQD,RQD,:,,,RQD,1m,,X:1999-05-25;:1999-09-13.:.:(1962-),,,.,,RQD,,9cm,RQD0,RQD100;,,9cm,,26,RQD100;26,RQD0,RQD,RQDDeereRQD,10cm,,A9cm,B11cm,C100cm,,Deere,ABCRQD0100100,A,BC,AB,BC,(2.5m),RQD[2]RQD,RQD,,RQDRQD1RQDDeereRQDRQD,,Farmer(1985),RQD,RQD[3]1RQDRQD,RQD:RQD,RQD1dRQD(t=0.1m,0.3m,0.5m,0.7m)1,RQDRQD8592,1RQD8595,RQDRQD,RQDRQD,RQD,,RQD,()()(),RQD,2,RQD0.1,RQD18,,,RQD,RQD;RQD,RQD,,1KRQDTable1RelationshipbetweenKandRQDofstructuralfaceRQD/mf5251500.20.225501580.20.40.25075850.40.60.20.57590510.60.80.50.89010010.81.00.81.02RQD,RQDt,,:;;;[4]RQD,RQDt,,,352JournalofEngineeringGeology　工程地质学报　2000　8(3)RQDtRQDt,RQDt:E(RQDt)=100EE(X*i)E(x)(1),E(X*i)t,E(x)1dRQDtFig.1RQDtinalldirectionsofdzoneofDaxilingTunnela.;b.;c.2RQDtFig.2RQDtinalldirectionsofsiliceousshaleinXinglingTunnela.;b.;c.,E(RQDt)=100(1-4t2K2)(2),E(RQDt)=100e-Kt(1+Kt)(3),E(RQDt)=100{1-F[ln(Kt)/Rlnx-Rlnx+1]}(4),F[]-;Rlnx;KMonte-Carlo,,,,,RQDt,,;,,Monte-Carlo,,,,RQDt353杜时贵等:岩石质量指标RQD与工程岩体分类RQDt,RQDtRQDt[5]RQDt(1,2)RQDt,RQDt,RQDt:RQDt,RQDt,RQDt,RQDtRQDt,(RQDt510%),dRQD0.199.2598.4398.42,8%,RQD0.191.3190.6590.55,1RQDt,RQDtRQDt,RQDtRQDt(RQDtmax/RQDtmin),,RQDt,RQDtmin,;RQDtmin,,RQDtRQDt,RQDtRQDt,RQDt,RQDt2dRQDtK3,RQDt2dRQDtKTable2RQDtandKinalldirectionsofdareaofDaxilingTunnel/()(22)(112)RQD/(%)0.1m0.3m0.5m0.7mK/õm-1RQD/(%)0.1m0.3m0.5m0.7mK/õm-1RQD/(%)0.1m0.3m0.5m0.7mK/õm-11093.0263.0336.6919.764.30062.9910.131.170.1212.91474.3420.874.410.839.7912088.3147.6721.098.505.84757.967.150.620.0514.35574.5921.184.530.869.7253091.6658.0831.1315.364.77459.317.870.740.0613.96483.4935.9612.253.767.6254090.6554.7027.6312.815.10957.336.840.850.0414.54147.373.170.150.0117.6375093.9866.8041.2723.703.95163.8910.751.310.1412.66148.993.620.180.0117.1076094.9170.7746.4628.493.58851.614.460.270.0116.27660.258.400.830.0713.6937096.6173.9250.8632.823.30298.7390.7879.2866.921.68868.5414.552.270.3111.3738099.9099.1997.8896.080.44392.5261.1434.5017.984.47975.5222.415.031.019.4719093.7465.8440.0822.654.03989.7952.0125.0111.015.38482.1833.3010.583.037.63610099.5896.6991.8585.820.94297.8085.2068.8453.122.25889.1350.0223.179.805.59311098.0686.6771.4856.462.11480.4130.108.702.268.12997.5183.5465.9649.582.41712097.8389.1569.1553.512.24192.9462.7236.3219.464.33093.0062.9636.6119.694.30713095.6073.8550.7632.723.30886.8843.8817.936.656.27991.7158.2731.3415.524.75514095.4373.0849.6631.623.37885.9741.5516.165.706.55187.2544.7918.687.086.17015095.7674.6151.8533.833.24084.1737.4113.214.217.07293.1563.5137.2520.0234.25516095.2972.4648.7930.753.43580.2529.738.542.208.17391.3657.0730.0714.574.87217093.7065.6939.8922.494.05373.7220.094.110.759.96085.6240.7215.555.376.65218095.4573.1849.8031.763.36968.3914.412.230.3011.41579.0927.757.511.828.4941.13122.08084.641111.3035.913020.354293.666932.058526.3533439.74958:,RQDt,RQDt;,RQDt,RQDt,RQDt3,t=0.1m,RQD0.194.97,2.88;RQD0.176.93,14.86;RQD0.178.51,14.00,RQDRQD0.183.47,10.59RQD354JournalofEngineeringGeology　工程地质学报　2000　8(3)78,RQDt,1,3,()RQDt,RQDRQD,,,RQDtmin,,RQD0.110.59RQD0.1,RQD0.172.88,RQD0.1RQD0.167.05,,3RQD(RQD)(3),xyz,KxKyKz,Jv=Kx+Ky+Kz(5)[6],Jv:,K,Jv,K=1.151.35;,K=1.251.35;,,JvK,K=1.653.0,K=2.0PalmstromJvRQD[7]:RQD=1153.3Jv(6),Jv4.5,RQD=100;Jv35,RQD=0SenEissa:RQDJv[2],Palmstrom,Palmstrom:,8Jv24()5Jv20()SenEissa,RQD(Jv),Palmstrom;RQDJv,,;,;,RQD,RQD,,,RQD3Fig.3Blocktemplateofthreesetsofjoints4RQD,:,(),RQD,RQD,RQD,,RQD:t,RQDt,tRQDt,RQD,tRQDttRQD4dRQDtt5,t=0.1m,RQD0.1=98.7,t,RQDtRQD90RQD,40.3m,RQD,t=0.3mdRQD355杜时贵等:岩石质量指标RQD与工程岩体分类4dRQDttFig.5RelationshipbetweenmeanRQDtandtofdzoneofDaxilingTunnel5(1)RQD,RQD,(2),RQD,,RQDt,(3),RQDRQDRQD,RQD,:RQDt,RQD;RQDt,RQDRQD,,RQD,tRQDt,(4)RQDtRQDt,RQDt,,RQDt510%(5)RQD,4,;RQD[1],.(RQD)[J].,1996,4(4):4854DuShigui,etal.Simpleanalysisofanisotroryofrockqualitydesignution.J.ofEng.Geol.,1996,4(4):4854.[2]Sen.Z.,EissaE.A.Rockqualitychartsforlog-normallydistributedblocksizes[J].Int.J.RockMech.MinSci.&Geomech.Abstr.,1992,19(1):112.[3].[M].:,1999.DuShigui.EngineeringBehaviorofdiscontinutiesinrockmass.Beijing:SeismicPress,1999.[4].[J].,1995,3(3):7985.ChengJianping,etla.Computermodellingofthefractaldimensionofrockmassfracturenetrock.JournalofEngineeringGeology,1995,3(3):7985.[5].[J].,1999,7(1):8994.XuWeiya,etal.Three-dimensionalnumericalsimulationofundergroundrockexcavationinMayarockslopeforShuibuyahydropowerproject.Jo