工程勘察中激光三维扫描和建模技术研究

Research on three-dimensional laser scanning and three-dimensional geological modeling techniques for engineering investigation

激光三维扫描和三维地质建模技术的应用,使得工程地质体的变形、沉降、扭转、位移勘察工作变得更加高效、快速和经济.简要介绍了逆向工程的基本思想,探讨了逆向工程在工程勘察中的应用模式,基于激光三维扫描仪器Trimbk GS200和三维数据处理软件CATIA,阐述了工程勘察过程中数字模型的建立方法和图像数据的处理流程,并通过对处理结果的分析来完成工程勘察的目标.通过对一个实体数据实例的分析和模拟,实现了对实体表面地质数据的全面分析和动态监控.分析发现,联合应用激光三维扫描和三维地质建模技术,能够在河道变形分析、大坝位移与变形监测、飞机跑道路面勘察、桥梁变形监测等工程勘察工作中发挥作用,其发展前景非常广阔.

Applications of three-dimensional laser scanning and three-dimensional geological modeling make investigations of the displacement, subsidence, deformation and reverse of engineering geology more simple, efficient and economical. This paper describes the concept and basic tenets of the reverse engineering, discusses the application mode of the reverse engineering for engineering investigation. Based on the three dimensional laser scanning equipment Trimble GS200 and three-dimensional data-processing software CATIA, we make description of the establishment of digital model and the treatment process of image data in engineering investigation process, and complete the investigation targets through the analysis of the results. Through analysis and simulation a data example of the entity, we have implementated the comprehensive analysis and dynamic monitoring for the entity surface geological data. Analysis found that joint application of three-dimensional laser scanning and three dimensional geological modeling technology is able to play a role in the engineering survey work, such as detecting deformation of rivers, dam displacement and deformation monitoring, runway pavement investigation, bridge deformation survey, and their development prospects are very broad.