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An experimental evaluation of impact force on a fiber Bragg grating-based device for debris flow warning

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Abstract

Conventional sensors for debris flow monitoring suffer from several drawbacks including low service life, low reliability in long-distance data transfer, and stability in severe weather conditions. Recently, fiber Bragg grating (FBG)-based sensors have been developed to monitor debris flows. However, they can be easily damaged by the impact forces of boulders within debris flow. This paper presents a new FBG-based device to measure the strain induced by the impact force of debris flow with high reliability and effectiveness. The effects of the impact forces of debris flows have been investigated. Then, the relationship between the strain and the debris flow energy correlating with the damage to building structures has been established. It is shown that this new FBG-based device is capable of monitoring and warning about debris flows.

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Funding

This work was supported by the National Natural Science Foundation of China (Grand No.51809262) and the science and technology planning project from Chongqing Administration of Land, Resources and Housing (KJ-2018005).

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Authors and Affiliations

  1. Key Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China

    Shaojie Zhang

  2. Department of Industrial, Manufacturing, and Systems Engineering, Texas Tech University, Lubbock, TX, 79409, USA

    Changxue Xu

  3. College of Architecture and Environment, Sichuan University, Chengdu, 610065, China

    Jiang Chen

  4. Chongqing Institute of Geological Environment Monitoring, Chongqing, 401120, China

    Jun Jiang

Authors
  1. Shaojie Zhang
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  2. Changxue Xu
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  3. Jiang Chen
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  4. Jun Jiang
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Correspondence to Jiang Chen.

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Zhang, S., Xu, C., Chen, J. et al. An experimental evaluation of impact force on a fiber Bragg grating-based device for debris flow warning. Landslides 16, 65–73 (2019). https://doi.org/10.1007/s10346-018-1083-0

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  • DOI: https://doi.org/10.1007/s10346-018-1083-0

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