Visualization and Virtual Analysis Technology of Ground Water
地下水空间信息可视化分析技术研究

To resolve the problems in conventional technologies of analysis and decision supporting, the virtual reality and visual spatial analysis technology can be applied to the scientific management of ground water. There are some problems to be solved, such as spatial data model, spatial database, appropriate virtual reality method, effective algorithm of visual spatial analysis, and so on. Integrated with practical research and application works, the modeling method of ground water and geological body, the storage environment of ground water, was analyzed and discussed. Visualization of ground water, geological body, relative surface information, iso-water-level line, flow direction of ground water was realized based on OpenGL, a world famous open 3D graphic library. After that, visual spatial analysis functions based on fast vertical-section generation algorithm was designed and realized. Taking "Su-xi-chang", a region locates in Jiangsu(a east province of China), as a case study, we developed a suit of software named "Ground Water Spatial Information Visualization and Virtual Analysis System for Su-xi-chang Region", which is an effectire evidence in the application to scientific management of ground water.