基于面片处理的三维地质构造建模技术研究

Study on TIN-pieces processing-based 3-D geological structural model-building technique

面对三维建模的不同需求,出现了多种三维建模软件。为了满足目前对三维构造建模的需求,本文提出了基于面片处理的构造建模技术,即采取三维CAD的设计思路,利用各种三维交互工具对三角网格面片进行编辑来构建层面、断面,最终建立一个符合要求的构造模型。这是一种增量式的灵活动态建模方式,用户在建模各个阶段可以对模型实时修改,最大限度地利用了各种算法和三维可视化交互手段的优势。方法的关键在于强化面片处理,突出三维交互工具与算法相结合的优点,使得用一般算法难以描述的复杂构造变得容易实现。

In view of different requirements of 3-D model building, appearing various kinds of 3-D model-building software, the paper presented a TIN-pieces processing-based structural model-building technique that uses 3-D CAD design idea, and a variety of 3-D interactive tools to edit TIN-pieces and construct the layers and fault planes, finally build up a structural model conforming to the demands. This is an incremental flexible dynamic model-building approach, in which the user can make real-time modification in any stage of model building and utilize variable algorithms and 3-D interactive visualization tools in maximum. The key of approach is on strengthening the TIN-pieces processing and highlighting the advantage of 3-D interactive tool combining with algorithm, which makes the description of complex structures become easier, which other algorithms are difficult to describe.