基于Civil 3D的三维地质覆盖层建模技术及应用

Civil 3D作为一个面向岩土勘察行业BIM设计及应用的解决方案,已成为三维地质建模实现技术之一。针对水运工程勘区场地覆盖层不同工程地质特点,采用"点-面-体"三维地质模型的构建思路,分别提出单一和复杂覆盖层地质模型建模方法。结合某船闸工程案例,通过覆盖层边界线导入、曲面分割、曲面围合等技术,实现场地三维地质模型表层岩土体精细化表达,准确直观地展示了勘区覆盖层地质发育与分布情况。研究成果对于后续土方量计算、基坑开挖设计等岩土勘察BIM应用具有重要实践意义。

3D geological overburden layer modeling technologyand application based on Civil 3D

Civil 3 D,as a BIM design and application solution for the geotechnical investigation industry,has become one of the 3 D geological modeling implementation technologies. Considering the different engineering geological characteristics of the overburden layer in port and waterway engineering prospecting area, the construction idea of "point-plane-volume" 3 D geological modeling is adopted,and the modeling methods of the single and complex overburden layer geological models are respectively proposed. Combined with a ship lock engineering case, through the overburden boundary line introduction, curved surface segmentation, curved surface enclosure,and other technologies,the 3 D geological model of the site surface rock and soil is refined expressed,and the geological development and distribution of the overburden in the survey area are accurately and intuitively displayed. The research results have great practical significance for the subsequent geotechnical investigation BIM application,such as earthwork calculation,foundation pit excavation design,and so on.