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| 一种基于GTP的地下真3D集成表达的实体模型 | |
| 引用本文： | 吴立新,陈学习,车德福,徐磊.一种基于GTP的地下真3D集成表达的实体模型[J].武汉大学学报(信息科学版),2007,32(4):331-335. |
| 作者姓名： | 吴立新 陈学习 车德福 徐磊 |
| 作者单位： | 1. 中国矿业大学东北大学3S与沉陷工程研究所,100083;东北大学3S与数字矿山研究中心,110004 2. 东北大学3S与数字矿山研究中心,110004 3. 东北大学3S与数字矿山研究中心,110004;中国矿业大学东北大学3S与沉陷工程研究所,100083 |
| 基金项目： | 国家自然科学基金;国家自然科学基金;北京市自然科学基金;国家教育部高校青年教师奖专项基金 |
| 摘 要： | 从建模对象、组成元素和拓扑描述三个方面对广义三棱柱（GTP）模型进行了修正和扩展。基于修正与扩展后的GTP模型，从地学、几何、拓扑三个层面对地下实体进行了提炼，抽象出8种空间构模几何元素，并将地下实体划分为点、线、面和体4类，体实体又进一步划分为简单体、复合体和复杂体，进而提出了一种基于GTP的地下真3D集成表这的实体模型（GTP—based entity model，GTP—EM）；采用面向对象的方法，通过构模元素之间拓扑关系的定义实现了地下实体的拓扑描述，并应用实例验证了GTP—EM的可行性。 |
| 关 键 词： | 数字矿山 实体模型 真三维集成 |
| 文章编号： | 1671-8860(2007)04-0331-05 |
| 修稿时间： | 2007年1月21日 |
A GTP-based Entity Model for Underground Real 3D Integral Representation |
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| WU Lixin,CHEN Xuexi,CHE Defu,XU Lei.A GTP-based Entity Model for Underground Real 3D Integral Representation[J].Geomatics and Information Science of Wuhan University,2007,32(4):331-335. | |
| Authors: | WU Lixin CHEN Xuexi CHE Defu XU Lei |
| Abstract: | Based on the amended and extended GTP model,the underground entity is extracted in levels of geosciences,geometry and topology,and eight geometric primitives including node,edge,arc,triangle,supper-surface,GTP,tetrahedron and super-body are abstracted.The arc refers to an unclosed curve comprised of two or more end-to-end edges,the supper-surface refers to a spatial surface represented by a group of triangles in order,and the supper-body is a spatial region enclosed by a few supper-surfaces or formed by a group of adjacent GTP elements.The geo-entity is 0-3D classified into point entity,line entity,face entity and body entity,and the body entity could be furthermore sorted as simple body entity,compound body entity and complex body entity.A GTP-based entity model(GTP-EM) is presented for underground real 3D integral representation and modeling.With object-oriented method,the topological relations are defined by geometrical elements.With the 3D integral geo-entity representation and modeling for the subway and its surrounding strata located underground,the central business district(CBD) in Beijing city is taken as an example. |
| Keywords: | GTP-EM |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |