探地雷达探测地下管线的研究

25Vol.25Supp.20049RockandSoilMechanicsSep.20042004-07-16197810007598(2004)013304271019TU459AResearchondetectingundergroundpipesandcablesbygroundpenetrationradarZHANYu-bao,ZHANGLi-min,YOUChun-an(ShandongUniversityofScience&Technology,Tai’an271019,China)Abstract:Theprotectionofundergroundpipesandcablesisregardedasanimportantthingsinmanyurbanundergroundengineerings.Knowingthedistributionsituationoftheundergroundpipesandcablesisaprerequisitefortheirsefety.Basedonspecificproject,thepaperintroducestheprinciplesandexplanationtheoriesofgroundpenetratingradar(GPR);italsoanalyzestheeffectsofdetectingundergroundpipesandcablesbyGPR.Keywords:groundpenetratingradar;detection;undergroundpipesandcables12GPRT(106109Hz)R11Fig.1SketchmapofdetectionprincipleofGPRRTxvzA20041()t2241xzvt+=1xzAv1v()xt1t2TR2Fig.2SketchmapofGPRrecords33.1V33120m65.5m12m3.5m40cm3m233Fig.3Sketchplanmapofdetectionlinearrangement3.2SIR-3000(GSSI)SIR-30004ns(sns9101−=)3.311100MHz400MHz100MHz8m400MHz2.5mabT1R1T4R4T7R701234567/m1344Fig.4SketchmapofGPRsystem3.41233.5353.4125a2.783.28m1.7m8.512.5m2.27m5b01.5m3.4m6.99.6m2.7m5Fig.5TheGPRrecordsin-situ(a)(b)13520044[1].[J].,2002,2(26):152155[2].F-K[J].,1998,3(22):280283.[3].[M].:,1994.[4],.[J].,2001,2(16):7577.136