Automatic generation method of geological cross-sections in dredging engineering based on 3D solid NURBS models

Abstract

An automatic generation method of geological cross-sections in dredging engineering based on 3D geological solid models is presented. The 3D geological models are built applying the non-uniform rational B-splines (NURBS) technique, and a 2D profile can be calculated and generated automatically through Boolean operation to meet the demands of dredging projects. Moreover, an automatic marking method for geological attributes is put forward based on database technology, and the geological attributes include the profile name, scale, horizontal and vertical relative coordinates, geological lithology, and 2D standard lithology legend. At the same time, the automatic marking method can also provide an interactive mode for geological engineers to edit and modify the profile in the modeling system. Practical engineering applications show that the automatic generation method is a simple, flexible, fast and precise visual graphics rendering process that can create 2D standard profiles automatically and efficiently. This method also provides a convenient support tool for geological engineering digital analysis.

Keywords

dredging engineering / 3D geological solid modeling / automatic generation / NURBS

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