三维激光扫描技术在地铁隧道断面测量中的应用研究

The application of 3D laser scanning technology in section survey of subway tunnel

针对传统全站仪断面测量方式所采集数据信息不够全面、速度慢、效率低等问题,本文依托工程实例,开展三维激光扫描断面测量技术实验研究,阐述三维激光扫描技术基本原理和三维激光扫描断面测量总体技术流程,对点云模型进行几何精度分析与评定,并与全站仪断面测量成果比较。实验结果表明,这两种测量方法成果吻合,验证了三维激光扫描技术在地铁隧道断面测量中的可行性及精度。该技术具有高精度、自动化、快速性及数据全面等特点,可以很好地解决传统测量方式存在的问题。

Aiming at the problems of obtained data information,incomplete slow speed and low efficiency of traditional total station section survey,this paper carries out experimental research on 3D laser scanning section survey technology based on engineering examples,describes the basic principle of 3D laser scanning technology and the overall technical flow of 3D laser scanning section survey,and analyzes evaluates the geometric accuracy of the point cloud model,and compares it with the section survey results of the total station.The experimental results show that the two methods are in agreement,and the feasibility and accuracy of 3D laser scanning technology in the section survey of subway tunnel are verified.And the technology has high precision,automation,fast and comprehensive data and other characteristics,which can solve the problems of traditional survey.