面波勘探技术要点与最新进展_王振东

301Vol.30,No.120062GEOPHYSICAL&GEOCHEMICALEXPLORATIONFeb.,2006王振东(中国地质调查局,北京100035):,10,:;;:P631.4:A:1000-8918(2006)01-0001-06,,,50,(micro-tremor)60~70,,1993,,1011.11.1.1:0.05~20Hz(-3dB);:0.05~20Hz,,?9b1.5LV,24h?2.5ms1.1.22,,-2,;,,Ls,,,,GPS,10~1s,,,,1.1.3(1)(SPAC):¹,,,º»,¼,vsS,½,(),,(2)-(F-K):2004-05-2430:¹,;F-K,;FFTF-K,;ºF-K,(fi)(Kxi,Kyi),vRi=2Pfi/K2xi+K2yivRi,vR-f;»SPAC¼½1.1.4,,,,1.21.2.1,12(),,H=K/2,f=v/2H,H,v,,5%,1/2120dB,A/D16,0.1Hz,10%,,,,1.2.2,,,,1.2.3;;;:¹,º(,),»1,,,2,,1/2,,1/m/m/m0.55.50.781111.3122221.840:1999:¹1/2;º,;»,,1.2.4;;;,1.2.5(1)()(2)()(3),:#2#1:(4):¹),,;ºF-K,;»F-K;¼;½,,(5),(6),,,1.2.6(),,,,,250,(Press,1956),,60,10m,1985,(Stokoe),21988,(Maikuma),1990,2,,(10m)1993,,(12~24),,,,,S,10m,30,(Aki,1957)(Kapon,1969)(Okada)10,)))198656,1988/0,41990561992(2400m),210,,2.12.1.1,,,,,,,,Sr()4,,3,,(fi)Q(r,fi),Q(r,fi)=J0(xi)xi,xi=2Pfir/c(fi)c(fi)fic(fi),-(F-K),,,,,,10,,#3#30,c(fi)=2Pfi/K2xi+K2yi,,K2xi+K2yiF-Kkikxi,kyiki2,2.1.2(1)(),(R))))(L),X(X,r)Qv(X,r)=J0(rkR),Qr(X,r)={J0(rkR)-J2(rkR)}hR+{J0(rkL)+J2(rkL)}hLhk+hL,Qt(X,r)={J0(rkR)+J2(rkR)}hk+{J0(rkL)-J2(rkL)}hLhR+hL,QvQrQt,kRkLRL,hRhLRLJ0J2RL,LP,(2),,:,,,,,F-K,(SPAC)(ESAC)2.1.3F-KF-K,,:¹,,º,»2,F-Kfr,,ffr,2,fr,,F-K2.1.4(1996),KR,:SPAC,2Rmin[K[10R;F-K,3Rmin[K[5R2000,,,,R,,F-KSPAC,F-K1.8~2.8,SPAC4.4~8.2,2002F-K2.3~6.8,SPAC3.2~17.210,,SPACF-K()2.1.5SPACF-KF-K,(),,F-K,SPAC,SPACSPAC,,,F-K,ESAC,,,SPAC,SPAC2.1.6SPAC,FFT,1994甦群在F-K法中引入自回(AR),,1996AICAR,,#4#1:FFT1993/0,L,7,1997,(SGA)(forking)(fGA),fGASGA,fGA,,fGA2.1.720,,SPACF-K(McSEIS-1600),2000,F-K,200135,2000GPS,,2.1.8(1),,S,),,S(2)19963~30mFFT,(50m)S1999,3~60m,SPAC,0.6~10Hz,100~1400m/sR,600mS1993,1200m,F-K,1996,,SPAC,600m,0.5~5sR,3500m2000,,,SPAC,2000m,0.3~4sR,3000m,S3km/s(3)S,,S,2.1.9ESACL;;,(3500m);2.21993,,,1987,1993~1995/01998~1999/SM980SM98,,2~3,3~4,#5#30,60020055,,5,2002,,,,,,():¹,º,,,,,»/0¼()199256,3:¹vs,,,;ºvs,,;»;¼,,:¹,,;º,;»,,2.3EH-4,1997/0:,,,2,,,20026,(OYO)McSEIS-SXWS,20m12,;20m100m,103,,McSEIS-SXW,(20~30m),GPS,,320,,2,,,,,2:¹,/0,,,,,º,,,,,12#6#30explorationinHeihebasinin1998,LaidoutanandBailiugouorebodieswerefoundunderthickoverburden.Theseresultsind-icatethatgeogassurvey,asausefulmeansforVMSdepositexploration,canplayanimportantroleinmineralexplorationinthecoveredbasin,andthatHeihebasinislikelytohavepotentialinfindingasuperlargeBaiyin-typeVMSdeposit.Theauthorssuggestthatfurthergeogassurveyshouldcoverthewholebasintodelineatetheprospectareasincombinationwithothertech-niquessuchasgeophysicalexplorationandsoilmercurysurvey.ItishopedthatthediscoveryofVMSdepositsinHeihebasinwillleadtoaseriesofconsiderablebreakthroughsinlookingforVMSdepositsinotherbasinssuchasSubei,MenyuanandTianzhuinNorthernQilianregion.Keywords:Qilianbasin;geogassurvey;VMSdeposit:(1958-),,,2002(),6:¹º,,»,,:[1],.[J].,1994,18(1):28.[2],.[A].[C].:,1997,189-190.[3],.[J].,1996,20(1):28.[4].[A].[C].:,1998,137.[5].[J].,1998(4):47.[6].[J].1993-2003,46-56.[7],,.[J].,2000,(1):9.[8],.-[J].,2005,29(2):138.[9]KohjiTokimatsu.EffctsofmultiplemodesonRayleighwavedispersioncharacteristics[J].JournalofGeotechnicalEng-ineering,1992,118(10):1529.[10],.[A].[C].:,1993,170.[11],甦群.微动利用N地下构造探查K关9k最近N研KD$F[R].,1994.ESSENTIALSANDRECENTADVANCESOFTHESURFACEWAVEEXPLORATIONTECHNIQUEWANGZhen-dong(ChinaGeologicalSurvey,Beijing100035,China)Abstract:Basedonabriefreviewofthedevelopmenthistoryofhesurfacewaveexploration,thispaperdealsemphaticallywiththeessentialsofthesurfacewaveexplorationtechniqueandtheadvancesinthenaturalsourcesurfacewaveexplorationandart-ificialsourcesurfacewaveexplorationinthepasttenyears,andpointsoutsomeproblemswhichdeservemuchattentioninfu-tureutilizationanddevelopmentofthistechnique.Keywords:surfacewaveexploration;advance;artificialsource;naturalsource:(1941-),,1964,,,,#12#