大型水电工程地质信息三维可视化分析理论与应用

3712200412JournalofTianjinUniversityVol.37No.12Dec.2004X钟登华1,李明超1,王刚1,2(1.,300072;2.,610072):地质信息可视化是大型水电工程可视化设计的基础,同时也是工程地质和数学地质领域的研究热点和难点在深入研究复杂地质构造和可视化理论的基础上,针对无规律变化的地质体形态,引入NURBS技术,并结合地质交互解译TIN算法和地质趋势面分析等理论方法,实现了三维地质模型的重建.基于模型进行了任意剖切岩体质量分级等值线自动生成和地质填挖计算等一系列可视化分析,并完成了模型地质信息的可视化管理与查询.根据上述理论与方法集成的VisualGeo系统已在锦屏一级溪洛渡糯扎渡和龙滩等大型水电工程设计中得到应用.:;;;:P628.3;TP311:A:0493-2137(2004)12-1046-07TheoryandApplicationof3DVisualAnalysisforLarge-ScaleHydropowerEngineeringGeologicInformationZHONGDeng-hua1,LIMing-chao1,WANGGang1,2(1.SchoolofCivilEngineering,TianjinUniversity,Tianjin300072,China;2.ChengduHydroelectricInvestigation&DesignInstitute,StatePowerCorporation,Chengdu610072,China)Abstract:Visualizationofgeologicinformationisthebasisofvisualdesignforlarge-scalehydropowerprojects,andistheresearchfocusandnodusinthefieldsofmathematicalgeologyandengineeringgeology.Basedonthestudyofcomplexgeologicalstructuresandvisualizationtheoryindepth,NURBStechniqueisintroducedaccord-ingtoirregulargeologicconfigurations.Integratedwithinteractivegeologicalinterpretation,TINalgorithmandgeologicaltrendsurfaceanalysis,3Dgeologicmodelisreconstruced.Thenbasedonthemodelaseriesofvisualanalysisfunctionsincludingarbitrarycutting,rock-massqualityclassification,automaticgenerationofcontourlineandcomputingexcavationvolume,arecarriedout.Inaddition,thecorrespondingdatabasecouldmanageandquerythegeologicalinformationofthemodelvisually.Theintegratedsystem(VisualGeo)hasbeenappliedtothedesignofseverallarge-scalehydropowerprojects,suchasJinpingFirst-level,Xiluodu,NuozhaduandLongtan.Keywords:hydropowerengineering;geologicinformation;3Dgeologicmodel;visualanalysis,,.,,,.,,,,.[1].X:2003-09-08;:2003-12-30.:(50479048).:(1963)),,,.(ViSC)(GIS).,3D[2].,,,.,[1],,,,[3].EarthV-isionVulanGemcomMicroLynxGOCADSurpacV-isionLandmarkGeoQuestGRISYS,[4,5],,,[6].,,,.,[7];[8],.,,,.,,,B(NURBS),,GIS.(VisuaGeo),,.1VisuaGeo1.1,,,.(1),.(2),.(3),CAD.(4)GIS,,.1.2.,,VisualGeo,12.1.3,,VisualGeo.(1),,AutoCAD.1VisualGeoFig.1ResearchapproachofVisualGeosystem#1047#200412:2VisualGeoFig.2ArchitecturalstructureofVisualGeosystem(2),(),/0/0,,.(3),/0,,CAD,,.(4),,/-0,,.(5),,.22.1VisualGeo.,,,NURBS,:,,,,,NURBS,.2.2NURBSISOSTEP.,NURBS,,[9].NURBS,,,NURBS,.NURBS3..,[10],(ANN),ANN,,.2.33,4.#1048#37123NURBSFig.3FlowchartofNURBSstructuralplane4Fig.4Flowchartof3Dgeologymodeling,:¹,;º,,,;»,,,.,.33.1.NURBS,AB,.(1)AB,(2).(2)()AB.(3)AB,ABAinBAoutBABsharedABant-ishared,4AB,ABB.B.,AG*B=AoutB+BoutA+ABsharedA-*B=AoutB+Flip(BinA)+ABont-isharedAH*B=AinB+BinA+ABsharedFlip(f)f.(4),,.,ABmn,O(mn),,,[11],,.3.2,,,.(1).Camera(Ob-serverPoint,TargetPointr,ViewAngle,RollAngle),.,,(),,,.(2).Get3DSection(CutPlaneType,CutPlaneParameter,Cu-tObjects,RemainDirection,BooleanOperation)#1049#200412:,.,,,.CAD,,Make2D(ConvertObjects,DrawLayout,IsorNot-MaintainLayers,CreateOperation),CAD,().(3).,,,,,,,.(4).,,,,,,,.(5).Draw_Contours,,.(6).AreaVolume,.44.1.,.,.:¹,,;º,,AutoCAD,;»,,,,.3,:;.,5.5VisualGeoFig.5GeologicinformationdatabasedesignofVisualGeosystem4.2VisualGeo.,,,.,,,.,.,,Select(*.*,fromdatabase,whereDrillID=/*0),,,,CAD.#1050#37125VisualGeo,.,67.6Fig.6Whole3DgeologicmodelofJinpingFirs-tLevelengineering7Fig.7Visualanalysisresultsof3Dgeology#1051#200412:6;7(a),(b),(c),(d).6(1),,,(Visua-Geo).,,.(2)NURBS,,.:[1]HouldingSW.3DGeoscienceModeling:ComputerTech-niquesforGeologicalCharacterization[M].Berlin:Springer-Verlag,1994.[2],,,.[J].,2001,37(4):60)62.CaoDaiyong,LiQingyuan,ZhuXiaodi,etal.Studyonthe3Dvisualmodelofgeologicalstructure[J].GeologyandProspecting,2001,37(4):60)62.[3]WhiteMJ.VisualizationoftheEIBerrocalgranite:Appl-icationtorockengineering[J].EngineeringGeology,1998,49(3-4):185)194.[4]DeKempEA.3Dvisualizationofstructuralfielddata:Ex-amplesfromtheArcheanCaopatinaFormation,Abitibigreenstonebelt[J].Computers&Geosciences,2000,26(5):509)530.[5]PintoV,FontX,SalgotM,etal.Using3Dstructuresandtheirvirtualrepresentationasatoolforrestoringopencastminesandquarries[J].EngineeringGeology,2002,63(1-2):121)129.[6],,,.[J].,2001,16(1):55)59.ChaiHejun,HuangDilong,HuangRunqiu,etal.Newprogressinthestudyofrockstructure3Dvisualizationmodel[J].AdvancedinEarthSciences,2001,16(1):55)59.[7],,,.[J].,1998,20(4):1)6.ChenChangyan,ZhangJuming,DuYonglian,etal.3Dvisu-alizationofgeographicinformationinslopeengineeringanditsapplicationtothepermanentshiplockslopeintheThreeGorgesproject[J].ChineseJournalofGeotechnicalEngi-neering,1998,20(4):1)6.[8],,.[J].,2001,128(4):416)420.HuangDilong,ChaiHejun,HuangRunqiu.Researchonsoftware-systemaboutvisualizationofarockbodystructure[J].JournalofChengduUniversityofTechnology,2001,128(4):416)420.[9],.[J].,1996,21(2):128)133.LiQingquan,LiDeren.Datastructurein3Dgeographicin-formationsystems[J].JournalofWuhanTechnicalUniver-sityofSurveyingandMapping,1996,21(2):128)133.[10],.[J].(),1996,15(4):414)417.XiangGuisheng,Shuhang.Anewmethodofanalysingge-ologytrendsurface[J].JournalofFuxinMiningInstitute(NatureScience),1996,15(4):414)417.[11],,.[M].:,2001.TangRongxi,WangJiaye,PengQunsheng,etal.Com-puterGraphics[M].Beijing:SciencePress,2001.#1052#