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

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.

[1]  G. Caumon,et al.  Surface-Based 3D Modeling of Geological Structures , 2009 .

[2]  Lan Xiang-rong.  Zigzag Section Cut Algorithm Based on 3D Geological Objects Represented by Triangulated Irregular Network Data , 2008 .

[3]  E. A. Kemp,et al.  Visualization of complex geological structures using 3-D Bézier construction tools , 1999 .

[4]  Zhong DengHua Li MingChao Liu Jie,et al.  3D integrated modeling approach to geo-engineering objects of hydraulic and hydroelectric projects , 2007 .

[5]  Guillaume Caumon,et al.  Towards Stochastic Time-Varying Geological Modeling , 2010 .

[6]  Mingchao Li,et al.  NURBS reconstruction of digital terrain for hydropower engineering based on TIN model , 2008 .

[7]  B. Lévy,et al.  Stochastic simulations of fault networks in 3D structural modeling. , 2010 .

[8]  Olivier Kaufmann,et al.  3D geological modelling from boreholes, cross-sections and geological maps, application over former natural gas storages in coal mines , 2008, Comput. Geosci..

[9]  N. Jones,et al.  Building solid models from boreholes and user-defined cross-sections , 2003 .

[10]  Jean-Laurent Mallet,et al.  Discrete smooth interpolation in geometric modelling , 1992, Comput. Aided Des..

[11]  Eric A. de Kemp,et al.  Interpretive Tools for 3-D Structural Geological Modeling Part I: Bézier-Based Curves, Ribbons and Grip Frames , 2003, GeoInformatica.

[12]  Holger Kessler,et al.  The capture and dissemination of integrated 3D geospatial knowledge at the British Geological Survey using GSI3D software and methodology , 2009, Comput. Geosci..

[13]  Simon W. Houlding,et al.  3D Geoscience Modeling: Computer Techniques for Geological Characterization , 1995 .

[14]  J. Mallet,et al.  Building and Editing a Sealed Geological Model , 2004 .

[15]  A. Keith Turner.  Three-dimensional modeling with geoscientific information systems , 1992 .

[16]  Philippe Renard,et al.  A workflow to facilitate three-dimensional geometrical modelling of complex poly-deformed geological units , 2009, Comput. Geosci..

[17]  Olivier Kaufmann,et al.  Reprint of "3D geological modelling from boreholes, cross-sections and geological maps, application over former natural gas storages in coal mines" [Computers & Geosciences 34 (2008) 278-290] , 2009, Comput. Geosci..

[18]  J. Mallet.  Discrete modeling for natural objects , 1997 .

[19]  Xukai Zou,et al.  An effective method for 3D geological modeling with multi-source data integration , 2005, Comput. Geosci..

[20]  Jianya Gong,et al.  Three-dimensional modeling and application in geological exploration engineering , 2004, Comput. Geosci..

[21]  Eric A. de Kemp,et al.  Interpretive Tools for 3-D Structural Geological Modelling Part II: Surface Design from Sparse Spatial Data , 2005, GeoInformatica.

[22]  Robert Hack,et al.  Three and more dimensional modelling in geo-engineering , 2006 .

[23]  A. Keith Turner,et al.  Challenges and trends for geological modelling and visualisation , 2006 .

[24]  Gang Wang,et al.  Enhanced NURBS modeling and visualization for large 3D geoengineering applications: An example from the Jinping first-level hydropower engineering project, China , 2006, Comput. Geosci..

[25]  T. R. Fisher,et al.  Three Dimensional Solid Modeling of Geo-Objects Using Non-Uniform Rational B-Splines (NURBS) , 1992 .