Study on 3D Visualization of Linear Engineering Survey based on BIM

Based on the investigation data of geotechnical engineering, aiming at the problem that the large-scale linear engineering survey data can not be expressed visually, the modeling method and modeling flow of 3D geological model are summarized. The preliminary modeling of topography, bad geological structure and stratum entity based on Civil 3D platform is realized, especially the establishment of landslide and debris flow model in bad geological structure. At the same time, the rapid modeling method of roadbed and tunnel based on Civil 3D component editor is studied.