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Non-destructive evaluation of shield tunnel condition using GPR and 3D laser scanning

机译:使用GPR和3D激光扫描对盾构隧道条件进行无损评估

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摘要

Shield tunnel requires routine inspections for construction safety and quality control. The rapidness, non-destructiveness and high precision of GPR and 3D laser scanning technology enable them to be widely and increasingly used in tunnel detection. The evaluation of Yingbin No.3 Road Tunnel is presented in this paper to illustrate the application of GPR in the inspection on thickness of grouting layer behind the segment and 3D laser scanning technology in the testing on surface situation of tunnel liner. The advantages and limitations of the above-mentioned two methods are discussed in the paper and suggestions are provided.
机译:盾构隧道需要例行检查以确保施工安全和质量控制。 GPR和3D激光扫描技术的快速性,无损性和高精度使它们在隧道检测中得到了越来越广泛的应用。通过对英滨三号公路隧道的评价,说明了GPR在检测段后注浆层厚度和3D激光扫描技术在隧道衬砌表面状况检测中的应用。本文讨论了上述两种方法的优缺点,并提出了建议。

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