Abstract
To address the problem of geological structure modeling combined with property modeling during the geological three-dimensional (3D) modeling researches, a method for attribute-oriented information expression was proposed, and its applications to 3D geological modeling was also demonstrated. Smoothing methods for the stratum 3D model which was based on the modified butterfly subdivision surface modeling technique was established, thereby expressing the stratified information and lithological information for geological bodies. Based on the tetrahedron mesh discretization technique in the extended advancing-front method, a method for obtaining a 3D voxel model of geological bodies was proposed, as well as a method for generating an irregular data field to describe orebody components and grade information. Combined with the direct volume rendering technique, this method allows the visualization and analysis of orebody components and grade information. Using a salt mine as an example, the effectiveness of the proposed methods by performing salt rock 3D geological modeling and attribute information expression based on its geological exploration data was verified.
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