对青岛胶州湾隧道一些工程地质问题的看法及建议

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456(323)200812Vol.45,No.6,Total.No.323Dec.2008MODERNTUNNELLINGTECHNOLOGY(,610031)(,453000),。,、、,、、,。,,、、,、、、、。:U451.1+1:A:1009-6582(2008)06-0022-06:2008-03-31:(1963-),,,,Email:Zjbtunnel@163.com.1,,,。6170m,3950m,,。,8.128m,14.426m。,:13.185m,16.426m。32.98,48。;1435m,,。22.1、()、,,()。(1):,、、,,。,、,,,()、。(),、,,,,。—。(2)():,、、,、,。,,,,—,,,。—。(3):,,,1~2mm;,。,0.5m,()。,;,(),。()20~50cm;50~80cm,22456(323)200812Vol.45,No.6,Total.No.323Dec.2008MODERNTUNNELLINGTECHNOLOGY,。——。(2~20cm)。,,。2.2“”FK5+925~FK5+475,,(),:(1):(),2mm,,,;,;,。,“”,、,。。(2):(),,。(3):,。,。2.3(1):,NW-SE,(60°~70°),0.5m,,,,、,。(2):,NW-SENE-SW,60°~80°;、、<5mm,0.2~1.0m,。(3)、、:60°~80°,<10cm,,>16m,。(4):,,。(5):;,,;。,2~10/m,6~8。2.4(1):,,。0~10m—,10~20m—,20~30m—。(2)、、、、:,—30。(3):,,,、()。2.5(1),,。,。:①:,。,,。,。,、,、。②:,(),,。,,,,,。,,,。,,。(2)1):①;②,。③,、。(:、:①,,;②,。)23456(323)200812Vol.45,No.6,Total.No.323Dec.2008MODERNTUNNELLINGTECHNOLOGY2):、,,、,,。(3)①(、),,,,、。②():,,。,3~5t/d。(4)300m,。,III,,,;,,,。,。2.6:,、、。、:(1):——,—,,,V。(2):—,—,。,、,IV、V。(3):,,,II、III。(4):,,,,II。33.1(1):,,X。NENWX:①,NE、;NW、(F3),。②NE、、,,,;NW、,F3,。③NE、NW,,NE、NW,。NNENEEX,,。NEE,、,,10,175°∠85°,EW。,,2EW;EW,EW,。,EW。EW,,,。,F3,EW。10°,,NEENNE,,,;,,。(2)((F3))①,。,,。,,SW。,80~100m,24456(323)200812Vol.45,No.6,Total.No.323Dec.2008MODERNTUNNELLINGTECHNOLOGY(90m)。、、,。②,。;、。A,。F3NE,。、,。F3,,;NE、NW(:NE,NW);NE、NW,NE。F3,。,:①:5km;②F3、;③NE、,(1924,4.5)。F3?19328226.25?F3、、,1/50000、、、、、,、、、,。(3)①NE、NWEW、SN:“3020”,“,70%”,“,3800m”。,,。40~80cm,;3500~5580m/s,。,NE、NW;;。EW,SN,。②:,,。,,。,;,,,。,,。3.2(1)。3950m3400m,550m。“”,。,,、,、,、,。,,;,,。,,。,,、,;、。?1000m,,1000mF55~10cm;,;60m。,。,、(),,。,。1)“”,,,。?①、,,。,。,,,。25456(323)200812Vol.45,No.6,Total.No.323Dec.2008MODERNTUNNELLINGTECHNOLOGY,,,,。,,,。②、、,,;。2)()、,,、,、,,。(2):,,;,,,。,、、,、、。,“、、、”,。、,;,、、,5%。,,,。,,、,,,。:,,,,,,、,。,,。“”,。、。、?。(3)、:,。,。(4),、、、。、、,,,?、、-:,;,。,-,,。,、,。3.3(1),、,。,,30~100m,0.2~1.0m。150m,2.5m,,。,。,、;,,。,,,,,、。,、,,,,。,、,,、,。(2):,、,,。(3),NE、NW(EW),,。(4),。3.4(1)“,”,。26456(323)200812Vol.45,No.6,Total.No.323Dec.2008MODERNTUNNELLINGTECHNOLOGY,,。,,,。NE,,,。、,,。(2),。,,;,,,,。、,、。,。4(1),;、,。、,,;,;,。,,。(2)F3。(3):,(、)、、,,、、,F3:①;②、、、;③;④(、),。:II~III52.7%;IV38.55%;V8.75%。:II~III46%;IV43%;V11%。(4)IV、。(5),、。(6),;,,。SomeCommentsandProposalsabouttheEngineeringGeologyofJiaozhouwanSubseaTunnelatQingdaoCityWeiJiangchuan1ZhaiXuedong2(1ChinaRailwaySouthwestResearchInstituteCo.,Ltd.,Chengdu610031;2ChinaRailwayTunnelingCorporation,Luoyang453000)AbstractUnderwaterexplorationforthegeologyofJiaozhouwansubseatunnelatQingdaocityhadbeenmostdifficult,abouttheengineeringgeologyopinionswerewidelydivided.Somepeopledeemed,sinceatthebaymouththereexistedfracture,gneissandvolcanicstructureetc.,thetunnelwillrankthefirstamongtheworldsub-seatunnelsintermsofcomplexityofrockpropertiesandgeologicstructure,badhydrogeologicconditionsandlowfactorofsafety.Thisattractedtheconcernofpublicandconstructors.Authorsofthepaperconsideredthecon-structionpracticeofthelandsectionofthetunnelandanalyzedrelevantengineeringdata,putforwardtheirowncommentsaboutthegeologicalfracture,volcanicstructure,permeabilityandothergeologicproblemsaswellasproposalsincludingintensifyingadvancegeologicprediction,identifyingandevaluatingtheexistinggeologicprob-lems,installationofadvancesupportandperformingadvancegrouting,allocatingenoughamountofpumpingde-vices,intimefabricatingsecondarylining.KeywordsGeologicstructure;Fractureatbaymouth;Intrusiverock;Weatheredfracturedrock27

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