基于线框单元体的三维闭合地质块体构建方法

基于线框单元体的三维闭合地质块体构建方法

侯卫生^1,2，吴信才¹，刘修国¹

1.中国地质大学信息工程学院，武汉 430074;2.中山大学地球科学系, 广州 510275

收稿日期:2006-11-06 修回日期:1900-01-01 出版日期:2007-09-26 发布日期:2007-09-26
通讯作者: 侯卫生

3D Sealed Geological Block Modeling with Wire Frame Component

HOU Wei-sheng^1,2, WU Xin-cai¹, LIU Xiu-guo¹

1.Faculty of Information Engineering， China University of Geosciences, Wuhan 430074, China;2.Department of Earth Sciences， Sun Yat-sen University, Guangzhou 510275, China

Received:2006-11-06 Revised:1900-01-01 Online:2007-09-26 Published:2007-09-26
Contact: HOU Wei-sheng

摘要/Abstract

摘要： 为能充分利用空间数据模型中的拓扑关系来实现三维闭合块体的构建，引入了表示简单块体轮廓的线框单元体概念来组织三维模型间各要素之间的拓扑关系；并以此为基础给出了以方向边和方向三角形作为基本识别单元进行三维简单形体的自动识别方法。应用实例表明：利用该方法不仅可以准确构建复杂地质块体，还可以准确描述块体内各要素的拓扑关系，再现局部特殊地质现象，如小断层（悬面）等。为三维地质模型在地震正演模拟、射线追踪等分析应用方面提供了基础。

关键词: 线框单元体, 闭合三维地质形体, 方向边, 方向三角形

Abstract: To construct 3D geological blocks with the topology of spatial data model, the notion of wire frame component describing the outline of simple block is presented to organize the topology of elements in the 3D geological model. With the help of the notion, an automatic block identification approach is proposed, in which the directed edge and directed triangle are used as basic search unit. The simulation result illustrated that the approach presented not only can model complex blocks, but also can exactly represent the topology among the elements in the block and local geological phenomena such as small fault (free face). The method provides base of the application of 3D geology model to seismic forward modeling, ray tracing, etc.

Key words: wire frame component, sealed geological block, directed edge, directed triangle

中图分类号:

P628.3

侯卫生，吴信才，刘修国. 基于线框单元体的三维闭合地质块体构建方法[J]. J4, 2007, 37(5): 1047-1051.

HOU Wei-sheng, WU Xin-cai, LIU Xiu-guo. 3D Sealed Geological Block Modeling with Wire Frame Component[J]. J4, 2007, 37(5): 1047-1051.

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