3D Modeling of Open Pit Based on AutoCAD and Application

Abstract 3D geological model of open pit is an information platform in the construction of digital mine, which plays a significant role in the engineering design and production management of open pit. In the AutoCAD 2008 platform, take an open pit for example, it is required to construct a geological database, to construct fault wire-frame model according to the fault lines, to construct a terrain model according to the present situation map of stope and topographic contour map, to construct coal solid model according to the borehole data and interpolation points, and realize a visible display of 3D geological model for the open pit; to construct a block model according to the coal & rock solid model, and add the attribute and assign some value to it, and then apply it to the calculation of stripping and mining quantities of open pit. Compared with traditional calculation method, this method is simple in operation, which enhances its calculation speed and precision.