关键词: AutoCAD, ObjectARX, Surfer, 插值拟合, 工程地质, 三维实体模型

Abstract: Based on the measured data and drilling data, interface models of various engineering geological strata are built by using ObjectARX derived from the AutoCAD platform. Then, the 3D geological entity model is generated by the method of region stretching and solid Boolean operation. Among them, the surface model is built directly using the measured data, which forms the Delaunay triangulation area. Other stratum models below the surface are built by Surfer to interpolate and fit the borehole data, which forms the 3D mesh data files. Then the data is exported as the "*.dat" file, and further forms the stratigraphic triangulation area by ObjectARX. The results show that the model established by this method can not only reflects the geological environment of the project, but also greatly improves design efficiency.

Key words: AutoCAD, ObjectARX, Surfer, interpolation and fitting, engineering geology, 3D solid model