摘要
对工程地质研究的主要三维空间对象 (勘探区域三维地质剖面体 )进行了规范化的构造描述 ,对当前主流三维空间建模方法进行了综合分析。在此基础上 ,结合专业建模对象的构造特点及三维数据模型适用表达对象的不同特性 ,融合单元分解表示 (CE)、构造实体几何 (CSG)和边界表示 (B Repsd)三种数据模型的建模思想 ,以及栅格模型的基本体元划分机制和数据组织方式 ,以不规则五面体为基本分析单元 ,采用面向对象方法构造模型内各类对象 ,提出了一种面向对象的三维矢量与栅格混合模型 ,实现了勘探区域三维地质剖面体的惟一性拓扑表达 ,并给出了可视化方案。分析了几例基于此模型的工程地质应用 ,借以验证该模型在工程地质领域内应用的合理性和可操作性。
In this paper,a standard description about the construction of three_dimensional geological section and geological entity is given,and the mainstream spatial data models are analyzed comprehensively.With this understanding,considering the constructed specialty about professional spatial object and the different characters of three dimensional spatial data models,special three_dimensional spatial data model is only applicable for special application domain.We graft the essential of CE,CSG,B_Reps and the method of raster model to orgnize tree data structure,adopt the object_oriented method to construct all kinds of objects in target model,finally prefer an object_oriented three dimensional blended data model with integrated vector and raster base on a primary analyze cell.This paper fulfills the unique expression on three_dimensional geological section and whole geological entity with topologic relation,then suggests a visualized schema.In order to test the rationality of the model.We analyze several applications to engineering geology.The result proves that this model is rational and operational.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2003年第1期25-30,共6页
Geomatics and Information Science of Wuhan University
