| Based on the geological data in Xianlin area of Nanjing, this paper put forward the working flow and the method of cleaning up the stereoscopic mapping data and designed the data card and also built the table of single synthetical stratum in Nanjin area. According to the characteristic of the data, this paper designed the structure of the database and built the database application system about stereoscopic mapping in Xianlin area. Comparing the most three dimension data models, this paper adopted the cell model to express the geological body underground. In the course of building the model, this paper put forward the interpolation on the fitting of top surface of stratum and used VC++6.0 to realize the visualization expression of three-dimensional gelogical model. |
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