Construction and Application of On-Line Roof Separation Monitoring System Based on High-Precision FBG Indicator

Mao Wang, Boyi Hu (), Shuai Li, Minfu Liang and Xinmin Wang
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Mao Wang: NO.1 Institute of Geological & Mineral Resources Survey of Henan, Luoyang 471000, China
Boyi Hu: School of Resources and Safety Engineering, Central South University, Changsha 410083, China
Shuai Li: School of Resources and Safety Engineering, Central South University, Changsha 410083, China
Minfu Liang: School of Mines, China University of Mining and Technology, Xuzhou 221116, China
Xinmin Wang: School of Resources and Safety Engineering, Central South University, Changsha 410083, China

Sustainability, 2023, vol. 15, issue 4, 1-18

Abstract: Aiming at the existing problems of low efficiency, lagging monitoring results, and poor reliability and accuracy in the present roadway roof separation monitoring system, a high-precision Fiber Bragg Grating (FBG) separation indicator is designed through theoretical analysis, numerical simulation, and laboratory tests—according to the fiber grating sensing principle. Based on the Microsoft. Net platform, C# programming language, and VS2010 integrated development tools, the corresponding on-line monitoring software is developed. On this basis, a real-time on-line roof separation monitoring system is proposed. The high-precision FBG separator was calibrated and tested in the laboratory and results suggested that both the left and right arm demonstrate good sensitivity and linearity with linear fitting coefficient values of 0.9981 and 0.9979, respectively. The monitoring system was successfully applied to roof separation monitoring of the #14301 rail roadway in the Shaqu coal mine. The monitoring results showed that the on-line roof separation monitoring system based on the high-precision FBG separation indicator has the advantages of high precision, good stability, and long-distance signal transmission, which can achieve real-time dynamic monitoring and provides an effective method for long-term on-line monitoring of roadway roof separation.

Keywords: fiber grating sensing; FBG roof separation indicator; roadway roof separation; on-line monitoring system (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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