三维地质建模是一项学科交叉的研究内容,也是学界的研究热点。针对目前三维地质建模方法中建模效率差、自动化程度低以及对地层尖灭、夹层识别不足的问题,提出一种基于钻孔平面点集Voronoi图的三维地层自动建模方法。首先分析处理钻孔数据,按地层块体属性归类,而后通过平面连通性与高程连通性判定,确立基于Voronoi图的地层边界,最后将地层块体分为普通地层和夹层两种地层块体,分层构建地质模型。该方法在南京某地下工程中应用结果表明,文中建模适用于沉积地层的建模,能够较好地识别地层分布中常见的尖灭和夹层现象,实现,无需人工干预的自动化快速建模。 Three-dimensional geological modeling is an interdisciplinary research content, but also the academic research hotspot. Aiming at the problem of poor modeling efficiency, low degree of automation and lack of identification of interlayer in current 3D geological modeling methods, an automatic three-dimensional modeling method based on Voronoi diagram of drilling plane point set is proposed. Firstly, the borehole data were analyzed and classified according to the attributes of the formation block, and then the boundary of the formation based on the Voronoi diagram was established through the judgment of the plane connectivity and elevation connectivity. Finally, the block was divided into ordinary formation and interlayer , Layered construction of geological model. The application of this method to a subsurface project in Nanjing shows that the modeling in this paper is suitable for the modeling of sedimentary strata and can identify the pinnacle and mezzanine phenomena commonly found in stratigraphic distribution and achieve rapid and automated modeling without human intervention.