基于实体与块体混合模型的三维矿体可视化建模技术

研究了根据解释出的地质体边界线，在三维环境中构建矿体可视化模型的基本原理和建模方法。针对传统建模方法效率低下及程序实现复杂的问题，提出了线内长度等比法构建实体表面三角网的新方法，并对体模型约束下块体生成的关键算法进行了研究，基于BSP树结构的三维块体模型快速填充算法，适合于复杂矿体约束下大数量级块体的生成，已成功应用于多个数字矿山项目中。

Modeling technology of 3D visualization orebody based on solid and block model

The integration model that contains the external contour and internal quality of orebody built on the computer,is the principal problem to be solved in the information management of mine and three-dimensional calculation of reserves.The basic principles and methods constructing orebody visualization modeling under three-dimensional environment according to the geological interpretation of boundary lines was studied.Due to the inefficiency of traditional modeling methods and complication of procedures implementation,the algorithm to build volume element surface triangulation out of geometric proportion within the line length was put forward,and key algorithm of block quality formation under the constraint of volume element model was studied.The rapid filling algorithm of three-dimensional block model based on BSP tree structure is suitable for large-magnitude block formation constrained by complex orebody,and was successfully applied to many digital mine projects.