Research And Application Of3D Geological Modeling Of Railway Tunnel System Based On OpenGL

With China’s comprehensive national strength increasing, the railway industry is developing rapidly. And the railway tunnel3D geological modeling technology is also got widely concern with a large number of railway construction. Railway tunnel3D geological modeling, in order to further meet the researchers’s complex diversity of tunnel design, construction, form, construct mode, is developed based on expressions of the traditional2D maps and mock-ups. How to achieve a3D visual model of the geological model, tunnel model, and analysis of the geology, can not be ignored in the railway construction.The main research work of the paper is to establish a3D geological model of the railway tunnel, which is a not a little important part of the tunnel construction. The drilling data and geological data, automatically generate a3D geological model, and analyzed the geological model generated, designed the center line, generated railway model. Then tunnel modeling approach, based on the geological profile information and the railway tunnel construction norms requirements to select tunnel modeling geological, generate3D model of the tunnel. By cutting3D geological model, combine the tunnel model with the geological model to complete the3D model of the railway tunnel.Finally, according to the railway tunnel3D geological modeling method described in this article, this system has been realized by Visual C6.0development platform, Oracle9i Database, and OpenGL2.0graphics library for graphics image processing tools. While the system is running, the3D railway tunnel model, it is effective for the geological resource data management,3D automatic modeling,3D visualization and spatial analysis. the building of3D visualization railway tunnel model demonstrate the design intent of the engineering staff, provide a valuable guiding significance on the subsequent construction, management, operation and have high practical value.