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基于多层DEM与QTPV的混合数据模型及其在地质建模中的应用
引用本文:程朋根,王承瑞,甘卫军,肖根如.基于多层DEM与QTPV的混合数据模型及其在地质建模中的应用[J].吉林大学学报(地球科学版),2005,35(6):806-811.
作者姓名:程朋根  王承瑞  甘卫军  肖根如
作者单位:1. 东华理工学院,测量系,江西,抚州,344000
2. 江西省煤田地质局,江西,南昌,330000
3. 中国地震局地质研究所,地震动力学国家重点实验室地壳形变研究中心,北京,100029
基金项目:中国科学院资助项目 , 科技部专项基金 , 江西省数字国土重点实验室基金
摘    要:提出一种基于多层DEM与似三棱柱体元(QTPV)的混合三维数据模型.模型包含顶点、线段(棱边、三角形边)、三角形、侧面四边形、似三棱柱体元和DEM 6个基本元素,同时包含点对象、线对象、面对象、体对象、复杂对象、空间对象等6个对象.设计了6个基本元素和2种地质对象的数据结构和它们之间的拓扑关系.研究了基于原始采样点和基于内插点的两种建模方法.以模拟数据和地质钻探数据对开发的原型系统进行验证.研究表明,基于多层DEM与似三棱柱体元的混合三维数据模型具有同时表达空间对象的表面和内部结构的能力,适合地质勘探领域的三维建模.

关 键 词:多层DEM  似三棱柱体  混合数据模型  地质体建模  混合数据模型  地质建模  应用  Modeling  Application  Based  Data  Model  三维建模  勘探领域  能力  内部结构  表面  表达  验证  原型系统  开发  钻探数据  模拟数据  建模方法  内插点
文章编号:1671-5888(2005)06-0806-06
收稿时间:2004-12-07
修稿时间:2004年12月7日

A Hybrid 3D Data Model Based on Multi-DEMs and QTPVs and Its Application in Geological Modeling
CHENG Peng-gen,WANG Cheng-rui,GAN Wei-jun,XIAO Gen-ru.A Hybrid 3D Data Model Based on Multi-DEMs and QTPVs and Its Application in Geological Modeling[J].Journal of Jilin Unviersity:Earth Science Edition,2005,35(6):806-811.
Authors:CHENG Peng-gen  WANG Cheng-rui  GAN Wei-jun  XIAO Gen-ru
Institution:1. Department of Surveying, East China Institute of Technology, Fuzhou 344000, China; 2. Jiangaxi Coalfield Geology Surveying Bureau, Nanchang 330000. China ; 3. State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Seismological Bureau, Beijing 100029, China
Abstract:A hybrid 3D spatial data model based on multi-DEMs and quasi tri-prism volume(QTPV) is proposed.The model is composed of six primitive and six objects.The primitive elements are vertex,segment(edge,triangle side),triangle,secund quadrilateral,QTPV and DEM,respectively.And the objects are point,line,surface,volume,complex and spatial object,respectively.Data structures and topological relationship of the six primitives and two geological objects are designed in detail.Two modelling methods,based on sample points and interpolated points,are devised,separately.Two sets of simulation data and real borehole sample data are used to verify the prototype system developed in VC++.The results show that the proposed model has better abilities of describing the surface and the inner structure of spatial objects,which is suitable for 3D modeling in geological exploration field.
Keywords:multi-DEMs  quasi tri-prism volume  hybrid data model  geologic body modelling
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