基于3维激光扫描的输气管线隧道收敛变形监测的研究

摘要

3维激光扫描仪目前已成为空间数据获取的一种技术手段.针对输气管线隧道在运营中的形变情况,使用3维激光扫描仪定期对输气管线隧道的移动变形进行观测,并对采集的隧道内表面数据进行内业处理与分析,快速获得隧道管片变形量.开发输气管线隧道收敛变形监测系统,探讨内业处理时隧道断面点云切割厚度对分析精度的影响.为输气管线隧道的安全运营提供了技术保障和决策支持,同时也为其它相同类型隧道的收敛变形监测提供了经验.%Three - dimensional laser scanning has become the means to obtain the spatial data. The paper discusses the influence of cloud cutting thickness of tunnel section on analysis accuracy, which serves as the technical guarantee, decisional support and experiences for the convergent deformation monitoring of similar tunnels.