真3维地学构模的若干问题

Some Issues on Ture Three-Dimensional Geosciences Modeling

以科学可视化、3维GIS、3维地学模拟及其在地质采矿与岩土工程中的应用为背景,系统分析了国内外3维地学领域面元构模、体元构模和混合构模方法的优缺点及其适用范围,指出了其存在的基本问题。介绍了广义三棱柱(GTP)的真3维地学构模原理、方法与技术特点,及其基于采样数据、本质开放与内含拓扑关系等性能优势,进而分析了基于GTP的真3维地学构模中亟需研究解决的核心问题和主要内容。指出:海量地学空间数据组织是3DGMS的心脏;在真3维地学模拟系统研发方面需要吸取科学可视化技术与3维GIS的营养,并充分利用VC++和OpenGL的图形函数,实现灵活方便、用户友好和可交互的地学可视化操纵。

Based on scientific visualization, 3D GIS, 3D geosciences modeling (3DGM) and its applications in geology, mining and civil engineering, the facial model, volumetric model and mixed model for spatial modeling in geosciences domain are systematically analyzed. The existing fundamental problems of 3DGM technologies are presented. The ture 3D modeling principles, methods and features of the generalized tri-prism (GTP) model are introduced. The GTP model is directly based on sampling data with essential open and topological relationship embodied properties. The key issues and core problems existing in GTP-based ture 3DGM are suggested and discussed. It concludes that the massive geosciences spatial data organization is the heart of 3DGM system. The developing of ture 3DGM system should employ the knowledge of scientific visualization and 3D GIS technology, and should also sufficiently utilize the graphic functions of Visual C++ and OpenGL, so as to implement the visualized geoscience manipulation with a flexible,convenient user, friendly and interactive operational environment.