National Center for Materials Service Safety, University of Science and Technology Beijing (USTB), Beijing 100083, China E-mail:
Water Sci Technol. 2022 May;85(10):3107-3121. doi: 10.2166/wst.2022.120.
Sewage pipe deterioration has been one of the factors causing huge asset losses and urban hazards worldwide. For more efficient and reliable management, a variety of monitoring and non-destructive testing techniques has been developed for defect inspection and condition assessment of sewer pipes. In the present paper, the monitoring approaches of sewage pipes in the form of operational monitoring, structural monitoring, and durability monitoring are outlined. The fundamentals and features of various non-destructive testing (NDT) techniques for different target detect locations are presented. The stereo vision, light detection and ranging (LiDAR), and laser 3D scanning technologies that might serve to architect the digital twin of the pipeline are also described. What's more, the capabilities and limitations of these technologies are discussed and summarized in tables. Some possible visions for the development of inspection and quantitative evaluation of sewage pipes are also discussed. In practice, it is suggested that visual inspection techniques are the most feasible for the evaluation of underground pipes. In terms of quantitative and automated evaluation, visual inspection robots equipped with stereo vision or laser 3D scanning technology are the most promising.
污水管的劣化是导致全球巨大资产损失和城市灾害的因素之一。为了更有效地进行管理，已经开发出了各种监测和非破坏性测试技术，用于检测污水管的缺陷并评估其状况。本文概述了污水管的运营监测、结构监测和耐久性监测方法。介绍了针对不同目标检测位置的各种非破坏性测试（NDT）技术的基本原理和特点。还描述了可能用于构建管道数字孪生的立体视觉、光检测和测距（LiDAR）以及激光 3D 扫描技术。此外，还以表格形式讨论并总结了这些技术的优缺点。还讨论了污水管检测和定量评估发展的一些可能前景。在实践中，建议采用目视检查技术对地下管道进行评估。在定量和自动化评估方面，配备立体视觉或激光 3D 扫描技术的目视检查机器人是最有前途的。
