Distributed fiber optic sensors for tunnel monitoring:A state-of-the-art review

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外文摘要：Distributed fiber optic sensors(DFOSs)possess the capability to measure strain and temperature vari-ations over long distances,demonstrating outstanding potential for monitoring underground infra-structure.This study presents a state-of-the-art review of the DFOS applications for monitoring and assessing the deformation behavior of typical tunnel infrastructure,including bored tunnels,conven-tional tunnels,as well as immersed and cut-and-cover tunnels.DFOS systems based on Brillouin and Rayleigh scattering principles are both considered.When implementing DFOS monitoring,the fiber optic cable can be primarily installed along transverse and longitudinal directions to(1)measure distributed strains by continuously adhering the fiber to the structure's surface or embedding it in the lining,or(2)measure point displacements by spot-anchoring it on the lining surface.There are four critical aspects of DFOS monitoring,including proper selection of the sensing fiber,selection of the measuring principle for the specific application,design of an effective sensor layout,and establishment of robust field sensor instrumentation.These four issues are comprehensively discussed,and practical suggestions are pro-vided for the implementation of DFOS in tunnel infrastructure monitoring.

外文关键词：

Distributed fiber optic sensor(DFOS)Tunnel infrastructureDistributed strain sensingPoint displacement monitoringField instrumentation

作者：

Xuehui Zhang、Honghu Zhu、Xi Jiang、Wout Broere

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作者单位：

Geo-Engineering Section,Department of Geoscience and Engineering,Delft University of Technology,Delft,2628CN,the Netherlands

School of Earth Sciences and Engineering,Nanjing University,Nanjing,210023,China

Department of Civil and Environmental Engineering,The Hong Kong Polytechnic University,Kowloon,Hong Kong,China

基金：

Rijkswaterstaat,the Netherlands,and European Union's Horizon 2020 Research and Innovation ProgrammeChina Scholarship Council,and National Natural Science Foundation of China

项目编号：

SAFE-10-T72325442225702

出版年：

2024

DOI：

10.1016/j.jrmge.2024.01.008

岩石力学与岩土工程学报(英文版)

中国科学院武汉岩土力学所中国岩石力学与工程学会武汉大学

岩石力学与岩土工程学报(英文版)

CSTPCD

影响因子：0.404

ISSN：1674-7755

年,卷(期)：2024.16(9)