基于G-maps拓扑数据模型的三维地质建模方法  

3D Geological Modeling Based on the G-maps Data Model

作　　者：胡金虎[1] 杨永香[1] 王江峰[1] 

机构地区：[1]华北水利水电学院资源与环境学院,郑州450011

出　　处：《地下空间与工程学报》2010年第6期1195-1200,共6页Chinese Journal of Underground Space and Engineering

基　　金：华北水利水电学院青年科研基金(200928)

摘　　要：三维地质建模是数字城市、矿山、石油等领域进行地下空间数字模拟的关键技术,本文研究了基于G-maps拓扑数据模型的三维地质建模方法。G-maps拓扑数据模型通过三个迭代函数完全表达了三角形内结点、边和三角形单元之间的拓扑关联信息。基于G-maps拓扑数据模型进行Delauany构网时,不仅能加快构网速度,同时也保存了三角单元内与单元间的拓扑关系。利用Delaunay三角构网,建立钻孔之间的拓扑关系,实现了基于三棱柱模型的三维地质建模。由于采用G-maps拓扑数据模型,对于新获取的钻孔数据可以很容易获取该钻孔对模型的影响区域,快速的插入钻孔信息,使得局部地层能够动态更新。3D Geological Modeling is the kernel technology for modeling the subsurface space in the fields of digital city,mining and oil,etc.This paper studies the method of 3D geological modeling based on G-maps.The kernel part of the G-maps is consisted by three iterated functions,which can perfectly describe the relations of triangles such as vertex to edge,edge to triangle and the triangle to triangle.The Delaunay triangulation based on G-maps,not only can fasten the efficiency,but also can save the topological relations of the inner triangle and between triangles at the same time.Constructing the topology relationship between the boreholes based on Delaunay triangulation,then,it achieved the geological modeling based on tri-prism.It can easily acquire the influence region when inserting a new borehole using the G-maps,so,the geological model can be updated easily just by a local operation.

关 键 词：广义图 DELAUNAY 拓扑关系 地质建模 标准地层层序 

分 类 号：P208[天文地球—地图制图学与地理信息工程]