基于钻井数据的地质体3维可视化研究

地质体3维可视化是地质工程中急需解决的一个热点问题,利用可视化的结果,可以将地质体的结构特征直观形象地展现在用户面前,使之可以非常直观地、清楚地对地质体进行各种观察和分析。笔者在综合考虑各种建模方法的基础之上,结合本文的建模数据——钻井数据的特点,采用广义三棱柱(Generalized tri-prism,简称GTP)作为建模的体元对地质体进行3维建模,并对传统的基于钻井数据的3维地质建模的方法做了一些改进,使GTP可以自动地、快速地剖分成四面体,以此来解决由于GTP的侧面不是平面所带来的问题。最后,利用VTK(Visualization Toolkit,简称VTK)可视化技术,开发了一个3维地质可视化系统,并利用该系统对本文建模方法的实际建模效果进行了展示和验证。

Research of 3D Visualization of Geologic Body Based on Borehole Data

3D visualization of geologic body is a hot issue which is urgent to be solved in geological engineering.Using the result of visualization,the structures and features of the geological body can be displayed to the user visually.Therefore,the users can take various kinds of observations and analysis of geological body very intuitively and clearly.On the basis of considering of former researches,combined with the characteristics of modeling data of borehole data in this paper,it took the GTP(Generalized tri-prism) as a volume element of modeling for 3D geological modeling,made some improvements on the traditional method of 3D geological modeling based on drilling data,so that GTP can automatically and quickly split into tetrahedron to solve the problem which is caused by the profile of GTP is not flat.Finally,it developed a 3D geological visualization system by use of VTK(Visualization Toolkit).By this system,the actual effect of the modeling method of this paper was demonstrated and validated.