THREE DIMENSIONAL VISUALIZATION TECHNIQUE FOR THE DESIGN OF RESERVOIRS

To enhance automatization in the design of reservoirs and three dimensional visualization of its model,this paper presents a modeling method for three dimensional terrains and its application in design of a reservoir.Terrain fidelity of digital elevation model(DEM) can be enhanced by integrating terrain character points and terrain lines in the three dimensional model.A synthetic removal method for integrated horizontal line and covering hidings allows us to completely remove hidings and fast build images.With three dimensional model of reservoir,one can not only estimate the reservoir capacity,flooding borderline and flooding area of reservoir water,but also generate the terrain profiles.Integrated profiles can also be developed by overlaying geological maps,hydrological maps and tectonic maps on the terrain profiles.At the end,the design of a reservoir is simulated using three dimensional visualization technique.The results show that the three dimensional terrain model provides a simple tool for selecting the dam site,determining reservoir capacity,and estimating water level of reservoir.