复杂地质体几何表面建模方法研究  

The research geometric surface modeling for complicated geological body

作　　者：王鑫[1] 孟祥宾[1] 王修银[1] 张猛[1] 

机构地区：[1]胜利油田分公司物探研究院

出　　处：《油气地球物理》2011年第3期10-16,共7页Petroleum Geophysics

摘　　要：地下地质构造非常复杂,经常出现正断层、逆断层、褶皱、尖灭、不规则体等复杂地质情况。为解决地质层位和断层等面构造几何建模问题,实现了Delaunay剖分和限定Delaunay剖分算法,研究了层面求交、分割、缝合、统一输出等关键技术,为复杂地质体三维实体建模提供了地质体模型的几何分布参数,保证了地质层位和断层等复杂地质构造在几何拓扑上的一致性。The subsurface geological structures are considerably complicated,which often appears as normal fault,reverse fault,fold,pinchout and irregular body etc.In order to model geometrically the face structure of the geologic horizon and fault,the Delaunay subdivision and limited Delaunay subdivision were achieved,some key algorithms,such as curved surface intersection,division,suture,united output and so on,were studied,the geometric distribution factors of geological body model were proposed to built the complicated geological body of 3D solid model,the compatibility of the complicated geological structure,such as geologic horizon and fault,were assured on geometry and topology.

关 键 词：DELAUNAY剖分 曲面求交 曲面分割 曲面缝合 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术]