Abstract：
This paper introduces 3D geological modeling techniques for expressway tunnels, including a special data model, key factors for modeling, and modeling procedures. It also compares the advantages and disadvantages of various methods and procedures. Based on a discrete smooth interpolation algorithm, the interpolation method using geological drill hole points, key points on geological section lines and interpolated key points are presented, as well as the method used to generate the tunnel based on a polygon of arbitrary shape and space. These techniques solved the cutting down problem of interface between any tunnel and geological body. The panorama 3D geological model was set up for the Lingjiao Tunnel using information regarding the stratum, 3D tunnel, and fault.
2013, Vol. 50 