三维激光扫描技术的高边坡开挖质量评价方法研究

Study on method of 3-D laser scanning technology-based assessment on high slope excavation quality

本文将三维激光扫描技术引入到高边坡开挖质量整体评价中,通过数字化仿真试验对基于点云数据的4种评价方法进行了对比和评价,验算了三维激光扫描技术与全站仪配套工作数据配准的精度。通过工程实例,采用点云比较与断面法对边坡开挖质量进行全面的分析。研究表明:三维激光扫描技术可以提高开挖边坡质量评价的精度,增强了对开挖面形态的了解,为下一工序的施工提供理论支撑。

3 -D laser scanning technology is introduced into the overall assessment made on the excavation quality of high slope herein, and then four kinds of the assessment methods are compared and evaluated according to the relevant point cloud data through digitalized simulation, furthermore, the accuracy of the data registration for the matching between both the 3 - D laser scanning technology and total station is calculated as well. Based on an engineering case concerned, the side slope excavation quality is fully analyzed with the point cloud comparison method and the cross-section method. The study shows that the 3 - D la- ser scanning technology can not only enhance the accuracy of the assessment on the side slope excavation quality, but also can deepen the understanding of the pattern of the excavation face, thus provide a theoretical support for the next construction stage.