Research on 3D integral modeling and its application for coal mine

The three-dimensional integrated modeling of Coal Mine surface and subsurface has a widely needs and applications. It becomes one of important research issues inland and overseas. In view of the deficiencies of present modeling methods, an integrated model based on GTP data model is presented. It applies ground engineering, terrain, geological body, underground engineering model and be comprised of the following geometric primitives, Node, Edge, Arc, Triangle, GTP. Triangle is the most basal geometric primitive in this model. The integrated model of coal mine surface and subsurface can be created based on above data model, The principle of the integration modeling of aground and underground objects, the implement method for the integration modeling is introduced. Using the constrained Delaunay triangulation, realize the integration of terrain models and surface features models. Using the level triangulation, realize the integration of geological spatial entities and the surface space entity. A real-3D geosciences modeling system, GeoMS3D, developed with VC++, OpenGL and SQL sever, an actual 3D geological model of an exploring district, is shown as a case.