Fiber Optic Microseismic Monitoring System Used in Underground Coal Mines

A fiber optic microseismic monitoring system for underground coal mines is proposed in this paper. The technical details including overall structure, fiber Bragg grating geophone, and interrogation system are introduced. The results show that the system achieves a bandwidth of 1-300 Hz and a dynamic...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-08, Vol.1065 (25), p.252012
Main Authors: Hu, Binxin, Song, Guangdong, Zhu, Feng, Zhang, Hua, Liu, Tongyu
Format: Article
Language:English
Subjects:
Bragg gratings
Coal mines
Coal mining
Fiber optics
Interrogation
Microseisms
Monitoring
Monitoring systems
Physics
Underground mines
Underground mining
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Description
Summary:A fiber optic microseismic monitoring system for underground coal mines is proposed in this paper. The technical details including overall structure, fiber Bragg grating geophone, and interrogation system are introduced. The results show that the system achieves a bandwidth of 1-300 Hz and a dynamic range of 80 dB. An application example of monitoring cross-border mining activities in underground coal mine is presented at the end.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1065/25/252012