一种基于Civil 3D平台的三维地质建模改进方法

Improvement method of 3D geological modeling based on Civil 3D platform

Civil3D作为一个面向勘察岩土行业BIM设计及应用的技术方案,已成为实现三维地质建模的常用技术软件。针对Civil3D在三维地质建模中实现钻孔数据可视化的问题,进行克里金(Kriging)插值算法及优势的研究,采用“点-面-体”三维地质模型的构建思路,提出采用纵断面插点和Kriging插值对地质层钻孔数据进行内插填补,得到一种改进的地质层三维模型。结果表明,经Kriging插值处理的地质层曲面较为光滑,所创建的地质岩土体可更精确直观地表达地质层发育和分布情况,研究成果对于勘察岩土单位开展BIM工作具有借鉴意义。

Civil 3D,as a technical solution for the BIM design and application in the geotechnical industry,has become a common technical software for 3D geological modeling.In view of the visualization of borehole data in Civil 3D geological modeling,we study the kriging interpolation algorithm and its advantages.Adopting the construction idea of “point-plane-volume” 3D geological model,we propose to use longitudinal intercalation points and Kriging interpolation to interpolate and fill the borehole data of the geological strata to complete the construction of 3D geological strata model.The results show that the surface of geological boundary layer treated by Kriging interpolation is relatively smooth,and the geological rock mass created can accurately and directly express the geological and geotechnical trend and distribution.The research results may serve as reference for the geotechnical units to carry out BIM work.