Abstract: To strengthen the spatial analysis and representation capacity of 3D geological bodies model, the paper presents a modeling method based on the simple partitioning theory, discusses the representation of 3D characteristic geological point, line, and polygon based on simple container, and put forwards such algorithms as boundary query, geological area search, geological line tracing, etc. Characterized by simple realization and abundant representation, this model can complete the topological analysis and boundary search that other models cannot do.  As one of the basic and key issues, this new modeling idea will speed the research and application of 3D geological model.

Key words: Geological bodies, 3D model, Spatial analysis, Simple container