基于三棱锥同斥布尔运算的复杂空区实体建模研究  

Research on 3D Solid Modeling Technology of Complex Mined-out Area Based on Like-Repulsion Boolean Operation to Triangular Pyramid

作　　者：李发本[1,2] 卢才武[1] 麦尚德 

机构地区：[1]西安建筑科技大学,陕西西安710055 [2]洛阳钼业集团有限责任公司,河南洛阳市471500

出　　处：《矿业研究与开发》2012年第5期81-84,共4页Mining Research and Development

基　　金：陕西省工业攻关计划项目(2009K08-25);陕西省教育厅专项基金资助项目(11JK0773)

摘　　要：地下采空区的存在对上部露天开采安全生产构成了巨大威胁,构建空区三维实体模型对制定生产计划和保障生产安全具有重要意义。在利用TIN模型建立空区三维包络线框模型基础之上,采用三棱锥体作为基本体元构建空区三维实体模型。针对建模过程中,包络线框模型分解凸化现象,将同性相斥原理运用到体元合并中,构建空区的三维实体模型。最后,在vs2005开发平台上实现算法并结合三道庄露天矿进行可行性验证。结果表明,该方法能够完成矿山复杂空区实体建模任务,为空区处理设计提供了技术支撑。Underground mined-out area is a great threat to the safety of upper opencast mining,so the 3D solid modeling of mined-out area is very important for making production plans and ensuring the safety in production.TIN model was used to create 3D envelope-wire-frame modeling of mined-out area,then,triangular pyramid was used as the basic body to three-dimensional solid model of mined-out area.To counter the phenomenon of convexification occurring in decomposing envelope-wire-frame model,the principle of like repulsion was used in basic body merging to build three-dimensional solid model.Finally,the improved boolean operation was implemented on vs2005 development platform,and combining with the case of Sandaozhuang surface mining,the feasibility of the method was verified.The results showed that the method can effectively realize the modeling of complex mined-out area in mine,providing a technical support for the design of mined-out area treatment.

关 键 词：金属矿山 三维实体建模 复杂空区 同斥布尔运算 

分 类 号：TD853.391[矿业工程—金属矿开采]