Volume 8, Issue 5, September 2020, Page: 103-115
Experiment Study on Coal Roadways Roof Monitoring Based on the Pre-stretched Optical Fiber Lay out at Fixed-points
Tao Hu, School of Mechanics and Civil Engineering, China University of Mining & Technology, Beijing, China
Su Bu, School of Laws and Humanities, China University of Mining & Technology, Beijing, China
GY Hou, School of Mechanics and Civil Engineering, China University of Mining & Technology, Beijing, China
Yan Wang, Shandong Energy Group CO., Ltd., Jinan, China
Ziyi Hu, Shandong Energy Group CO., Ltd., Jinan, China
Zixiang Li, School of Mechanics and Civil Engineering, China University of Mining & Technology, Beijing, China
Jinping Liang, School of Mechanics and Civil Engineering, China University of Mining & Technology, Beijing, China
Yuliang Zhou, School of Mechanics and Civil Engineering, China University of Mining & Technology, Beijing, China
Haoyong Jing, School of Mechanics and Civil Engineering, China University of Mining & Technology, Beijing, China
Received: Sep. 24, 2020;       Accepted: Sep. 30, 2020;       Published: Oct. 7, 2020
DOI: 10.11648/j.ogce.20200805.12      View  97      Downloads  46
Abstract
The safety monitoring of coal roadways roof is the key to prevent roof accidents and ensure coal mines safety. However, the monitoring blind zones caused by traditional methods is one of the main reasons of frequent roof accidents. To ensure the safety of coal mines production, a novel roof monitoring method is proposed in this paper, which is based on the distributed optical fiber sensing (DOFS) and the pre-stretched optical fiber layout at fixed points (POFLF). The research of this approach has been carried out through analysis of DOFS optical fiber strain monitoring and POFLF theory, and with the help of indoor optical fiber strain experiment. Finally the approach was applied in the field monitoring of a coal roadway roof. Aforementioned verified the optical fiber strain distribution not only accurately indicate the roof settlement range, but also qualitatively and quantitatively demonstrate the roof subsidence displacement. The feasibility and validation of the approach as a supplementary or auxiliary resorts in roof safety monitoring were confirmed. The research in this paper not only has important reference significance for the safety monitoring of coal roadways roof under similar geological and production conditions, but be of helpful for improving the coal mine safety as well.
Keywords
Coal Roadway Roof Monitoring, Distributed Optical Fiber Sensing, Brillouin Optic Time-domain Reflectometry, Pre-stretching Optical Fiber Layout at Fixed-point, Quantitative Characterization
To cite this article
Tao Hu, Su Bu, GY Hou, Yan Wang, Ziyi Hu, Zixiang Li, Jinping Liang, Yuliang Zhou, Haoyong Jing, Experiment Study on Coal Roadways Roof Monitoring Based on the Pre-stretched Optical Fiber Lay out at Fixed-points, International Journal of Oil, Gas and Coal Engineering. Vol. 8, No. 5, 2020, pp. 103-115. doi: 10.11648/j.ogce.20200805.12
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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