The core problems in the geological-hydraulic engineering design and the realization of threedimensional collaborative construction of hydrogeological engineering. The system includes a 3D geological model, a hydraulic building model, a geological engineering analysis and design, and four database management units. Geological and hydraulic structures and models provide three - dimensional models for geological technology analysis and construction. Three - dimensional section analysis, basic analysis,lower construction layout, hanging comprehensive network analysis and other multidisciplinary and expert collaborative work can be carried out to provide technical support for three - dimensional water - saving technology. The Water Conservation Institute is not easy in geological structure, often small, but requires that the stratigraphic structure is highly accurate and complex and difficult to measure, and the geological information includes a variety of material sources, types, topics, and multidimensional data. Hydrological engineering 3D geological simulation system has many advantages, which can eff ectively use the hydrological technology to analyze and assist the geological data, and improve the utilization efficiency of the geological engineering data. However, in the use of hydrogeological model, the separation of GIS database and simulation system aff ects the eff ective application of software.
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