Real-3D Geosciences Modeling and Visualization Based on Generalized Tri-Prism Model
In view of the researches on 3D geosciences modeling and presented 3D spatial models during the past decades, a generalized tri-prism (GTP) model, being capable of spatial topological relationship describing and 3D planar clipping, is introduced. This model takes borehole data as its original data source, and the model construction process includes: 1) to generate Delaunay TIN (D-TIN) of the geological upper surface according to boreholes collar data, 2) to extend each triangle of the D-TINs down into GTP along borehole line referring to the geological knowledge inference rule, 3) to convert the GTP model into TEN model by the smallest vertex identifier (SVID) method or into B-reps and Multi-DEM model according its topological relations. The mechanism of its smart application for 3D geosciences modeling and 3D visualization is introduced. A real-3D geosciences modeling system, GeoMo3D, developed with VC++, OpenOL and SQL sever, demonstrates some the main 3D geo-spatial operations including precise snapping, 2D cutting, virtual excavation, virtual wandering, spatial inquiry and other interactive visualization operations. An actual 3D geological model of an exploring district of CBD, downtown Beijing, is shown as a case.
3D geosciences modeling 3D interactive visualization generalized aI-prism (GTP) model geological knowledge inference rule
CHEN Xuexi WU Lixin
School of Safety Engineering,North China Institute of Science and Technology,Beijing 100083,China;In Institute of Resource and Safety,China University of Mining and Technology,Beijing 100083,China;Cent
国际会议
The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)
北京
英文
2432-2436
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）