Study on the 3D-roadway model by the triangulation algorithm

ACAD is universally used in china mine, 2D-roadway model of mine is setup contour waist which is consisted by two measured line. It is shows that the 3D-roadway model of mine is set up by triangulation algorithm based on 2D-roadway model. There two methods: (1) based on the measured data and calculation results, using the results to achieve 3D-roadway model; (2) based on 2D-roadway figure analysis, using the triangulation algorithm method to achieve 3D-roadway model. First, constrained Delaunay method is used and the roadway is formed 3D-roadway bottom by triangulation method; Second, subdivided triangles are divided into three type; Last, arch of roadway is formed. The arch is formed by three different broken methods. At the same time, the sides of roadway are also formed. Based on roadway triangulation algorithm, ACIS method is used to transfor the 2D-roadway to 3D-roadway. Then, a variety of Boolean calculation of 3D-roadway can be achieved. 3D-solid model of roadway is applied to mine, and the three-dimensional triangulation algorithm can be a basis on the mining working and study.