基于GIS协同AutoCAD和Google SketchUp的三维地质建模方法研究

GIS COORDINATING AUTOCAD AND GOOGLE SKETCHUP BASED 3D GEOLOGICAL MODELING METHOD

现有三维地质建模方法的操作过程十分烦琐、复杂。为降低作业人员的劳动强度,并提高建模的直观性和模型结果的准确性,提出一种基于GIS协同AutoCAD和Google SketchUp的三维地质建模方法。在介绍了GIS结合AutoCAD和Google SketchUp构建三维地层模型的基本原理和工作流程之后,阐述了地质数据的处理和三维地质场景的构建过程,并重点阐述了地层表面的绘制、地层三维体模型的构建和可视化关键技术。最后利用C#语言基于SceneControl组件开发了三维地层模型可视化系统,并对构建的地层模型进行了展示。系列实验结果表明,该建模方法具有简单易学、可操作性强和流程化的特点,是一种非常实用的三维地质建模方法。

The operation processes of many existing 3D geological modeling methods are often very cumbersome and complex.In order to reduce the labor intensity of technicians,meanwhile,to level up the intuition of the modeling process and to ensure the accuracy of the modeling results,this paper presents a 3D stratum modeling method.It is based on the GIS coordinating to AutoCAD and Google SketchUp.Firstly,the basic principles and the work flow are illustrated intuitively.Next,the process of borehole data processing and the construction of 3D geological scenes are elaborated in detail.Then,the key technologies are discussed in detail.They are related to drawing of stratum surface and boundary face and the construction and visualization of 3D geological stratum models.Finally,a 3D stratum model visualization prototype system has been implemented using C# for representing the constructed 3D stratum models.This system is based on SceneControl.The results of a series experiments show that the modeling method has the characteristics of easy to learn,powerful operability and process-oriented.It is a very practical 3D geological modeling method.