基于GOCAD的宁芜盆地云台山地区三维地质建模

3D geological modeling of Yuntaishan area in Ningwu Basin based on GOCAD software

阐述了利用GOCAD软件进行三维地质模型构建的思路及主要步骤,重点介绍其模拟地质界面的3种主要方法。以宁芜盆地云台山地区为例,利用GOCAD模拟了该区地层、岩体及断裂。在构建地形、地层及构造面时,利用剖面建模法以及离散光滑插值技术,快速构建研究区的表面模型。由面模型向体模型转化时,选用GOCAD的SGrid代替Solid功能,更加方便准确地反应了真实地质情况。

The authors illustrated the ideas and main steps of constructing 3D geological models based on GOCAD with focuses on threes main methods simulating the geological surfaces. Taking Yuntaishan area in Nanjing-Wuhu Basin for example,the strata,the rock mass and the fault of the area were simulated by using GOCAD software. Surface model was finished based on cross-section and Discrete Smooth Interpolation technology（ DSI）. By choosing the function of SGrid instead of the function of Solid when changing from surface model to volume model,it showed the real geological condition more conveniently and accurately.