【摘要】 对真三维环境下地矿工程三维立体模型的构建进行研究;采用分形插值算法即改进的中点移位法建立地形模型;建立基于TIN和ARTP的三维数据模型;利用顶板中心线加巷道断面法实现开拓系统的三维实体建模;基于线框法及块段法分别构建矿体的表面模型及内部模型。研究结果表明:采用改进的中点移位法,提高了细分过程的平稳性,使整体形状容易控制;顶板中心线加断面法容易实现,建模速度快,效果较好;线框构模法与块段法相互结合可用于精确表达矿体的边界形态及内部属性。更多还原

【Abstract】 3D modeling for geological and mining engineering was studied under real 3D condition.Fractal interpolation 3D date algorithm,i.e.,improved midpoint displacement method,was utilized to set up the terrain model.Based on TIN and ARTP,3D data model was constituted.3D entity model of development system was established by the method of placing the roadway section on the roof center line.Surface model and internal model of orebody were established by line-frame and block-section method,respectively.The results show that the improved midpoint displacement method can be used to improve the stationarity of subdivision process,and make the control of whole shape easy.The method in which the roadway section located in roof center line possesses some excellences such as easy realization,fast modeling and good modeling effect.The boundary configuration and internal model of orebody can be established accurately by using line-frame method with block-section method.更多还原