三维激光扫描技术在地铁隧道断面测量中的应用

Application of Subway Tunnel Profile Measurement Based on 3D Laser Scanning Technology

随着三维激光扫描技术的不断发展和成熟,它被应用在越来越多的工程领域中。传统的隧道断面测量使用全站仪或收敛仪进行测量,存在着测量速度慢、效率低等缺点。为了验证三维激光扫描技术在地铁隧道断面测量中的精度及可靠性,对哈尔滨地铁某区间进行了试验,采用三维激光扫描仪进行扫描,并开发了相应的数据处理软件,对采集的点云进行了精度验证,从内符合精度和外符合精度上证明了三维激光扫描技术能满足地铁隧道断面测量的要求,同时,也为三维激光扫描技术在相关工程测量中的应用提供了参考。

As the development and maturity of 3D laser scanning technology, it has been used in more and more engineering fields. The traditional way of tunnel measurement is by total station or convergent instrument, which has the disadvantages of slow speed and low efficiency. In order to verify the accuracy and reliability of 3D laser scanning technology in tunnel profile measurement, an experiment was carried out on a Harbin metro section. The 3D laser scanner is used to scan, and the corresponding data processing software was developed, the accuracy of the acquired point cloud is verified. It has proved that 3D laser scanning technology can meet the requirements of tunnel profile measurement in terms of internal and external accord accuracy, it provides a reference for the application of 3D laser scanning technology in the related engineering measurement.