Study on 3d Modeling and Visualization in Geological Exploration Engineering

With the development of GIS, its applications concern with different domains, such as geography, mapping, urban, traffic, geology, mine, military and so on. 3D GIS is the research hotspots in the domains of city, geology, mine etc. 3D GIS in city has been developed more quickly, CyberCity, for example is a smart application of 3D GIS, but it is slow in subsurface engineering because of its complexity. In generally speaking, the key problems for developing 3DGIS are the researches on 3D modeling, visualization and interaction according to the practice situation. In this paper, taking the phenomena in geologic exploration engineering as the research objects, the authors discuss the three-dimensional geologic phenomena and data capture methods in section 2. A blended data model integrated vector and raster data is proposed in section 3. Tri-prism volume data structure is designed in section 4. The necessity of 3D visualization and its application in geologic exploration engineering are discussed, and some visualization examples are given in section 5. Several geologic bodies modeling techniques are presented in section 6. Lastly, some conclusions are given in section 7.