GOCAD在某桥基边坡三维地质建模中的应用研究

201Vol.20,No.120093JournalofGeologicalHazardsandEnvironmentPreservationMarch2009:1006-4362(2009)01-0060-06:20081215:20090110:(2008BAG07B01);(40772175,40841025);(2008A01)GOCAD童亮,胡卸文,汪雪瑞(,610031):GOCAD(GeologicalObjectComputerAidedDesign),,(),,,,:GOCAD;;:P642:A,,,,,(VisualizationInScienceComputer,VISC),,,,1GOCADGOCAD(GeologicalObjectComputerAidedDesign),:208,1989NANCYJ.L.MalletGOCAD,10,GOCAD,,:(1)GOCADGOCAD(),,,GOCAD,,GOCAD,,,(2)GIS,GOCAD,,,GOCAD,,,,GOCAD,,,,,,,GOCADGOCAD,,(3)GOCADDSI(DiscreteSmoothInterpolation)CADGIS,CAD,,,,,GIS,,GOCAD,(DSI)DSI,,,,DSI(4)GOCAD,3264,WindowsNTUNIXLinux,PC(5),,,GOCAD:(Kriging)2GOCAD2.1-(1),,30m,,,25~30,,45~60,0.5m,,,1Fig.1PanoramicviewoftheLaohubridgeslope,,,,(Q4el-dl)2.2GOCAD:marker,,workflow,(2):2.3(1)DXF(FILEImportobjectsAutocad(DXFfiles)),curve91109120,pointsetmode()(3)(2)!wizards()surfacecreation()Fromdata61201:GOCAD2Fig.2Flowchartofthethreedimensionalgeologicalmodeling3Fig.3Distributingoftopographicalpoints(withoutinternalborder)(()),createoutlinecurvefrompoints()optiamizeoutlinecurvetobetterfitpoints(),,;,outlineobjectscreatesurface,hideconstraints(4)4Fig.4Topographicsurface∀ASCII(12)(55ASCII),12(6),Surfacemodenewfromotherswellmarkers,,7,fitgeometry,Delaunay,GOCADDSI;,,,DSI,GOCAD,,GOCAD(Fitgeometry)GOCADWell5HEADER{name:WellSZK5}WREF540578.4243327705.8928.85DPLN0VRTX540578.4243327705.8926.35VRTX540578.4243327705.89-13.85MRKRdingdian100.3048NORM001MRKRJ3ja110.10.3048NORM001MRKRJ3ja212.50.3048NORM001MRKRJ3ja3142.70.3048NORM001MRKRdidian161.30.3048NORM001ZONEzoneEldelq00.11ZONEzoneJ3ja10.12.51ZONEzoneJ3ja22.542.71ZONEzoneJ3ja342.761.31END55ASCIIFig.5TheASCIItextfileofNo.56Fig.6Distributionofthedrills7Fig.7Initialproducedimageofstrata622009#,camera()outlinecurve(),surfacemode()-new()-buildinforms()-tube(),expansion,Z,twoway,(closedsurface),sealendssurfacemode-border-expand-one,,surfacemode-edit-cut-bysurfaces,surfacemodeedit-part-remove88,,Fig.8Thedistributingchartgeneratedbyextending,cuttinganddeletingtheunreasonable(3)(SGRID)workflow3D,,,(),(9,10)9workflowFig.9Threedimensionalgeologicalmodelinggeneratedbythemethodofworkflow10Fig.10Stratigraphicgridofthethree-dimensionalgeologicalmodelinginthestudyareaFLACANYSYS(4),Slicer,!Slicer(),,,(11)39,,,,,,(),,,,,FLACANYSY,,,,,4(1)GOCAD(GeologicalObjectComputerAidedDesign),63201:GOCAD11slicerFig.11Thesketchmapofcuttingmodelingusedbyslicer4,,(2),,,,ANYSYS,FLAC(3D);(MAPGIS),[1],,,.[M].:,2001.[2].()[D].:,2002.[3].()[D].:,2003.[4],,.[J].,2001,28(4):416420.[5].()[D].:,2006.[6],.GOCAD[J].,2007,().[7]JeanLaurentMallet.GEOMODELING[D].OXFORDuniversitypress,2002.[8]MarcusA.Developmentofa3DGISbasesonthe3DmodelerGOCAD[A].IAMGMeeting,2001:256268.[9]MalletJL.Discretesmoothinterpolation[J].ACMTransactionsonGraphics,1989,8(2):121144.[10]GOCAD2.0.8UserManual[S].642009STUDYONAPPLICATIONOFTHREEDIMENSIONALMODELINGTOABRIDGESLOPEBYUSINGTHESOFTWARENAMEDGOCADTONGLiang,HUXiewen,WangXuerui(CollegeofCivilEngineering,SouthwestJiaotongUniversity,Chengdu610031,China)Abstract:ThepapermakesuseoftheprofessionalthreedimensionalgeologicalmodelingsoftwarenamedGOCAD(GeologicalObjectComputerAidedDesign),andonthebaseofthedateoffield-surveyeditinterpolatesandsimulatesthelandform,geologiclayers,thenbuildsupthethreedimensionalgeologicmodelingofonetalusslope.Meanwhileitshowsthegeologicalstructureofundergroundbythethree-dimensionalvisualizationandengineerscandiscretionarilyincisesectionstogetanindepthunderstandingofthegeologicalstructure.Throughthefoundationofthethreedimensionalmodeling,itprovidesakindofnewmethodforpersonnelengaginginthegeologicengineering,whichcanhelptheanalysisofthestabilityofatalusslopeandnumericalsimulation.Ontheotheritletpersonnelwhodonotengageinthegeologicengineeringhaveaintuitivefeelandrecognitiontothethreedimensionalgeologicalstructure.Keywords:GOCAD;threedimensionalgeologicalmodeling;visualization:(1983-),,,65201:GOCAD