Quasi-Distributed Fiber-Optic Monitoring System for Overlying Rock Mass Pressure on Roofs of Underground Excavations

The ground control using optical fibers is discussed. The designed monomode fiber pressure sensor is capable to perform high-precision measurement of overlying rock mass pressure imposed on walls of underground excavation. The mathematical apparatus is presented for the calculation of radiation inte...

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Bibliographic Details
Published inJournal of mining science Vol. 57; no. 2; pp. 354 - 360
Main Authors Mekhtiev, A. D., Yurchenko, A. V., Ozhigin, S. G., Neshina, E. G., Al’kina, A. D.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.03.2021
Springer
Springer Nature B.V
Subjects
Analysis
Atmospheric particulates
Control methods
Dredging
Dust storms
Earth and Environmental Science
Earth Sciences
Excavation
Fiber optics
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Ground based control
Mineral industry
Mineral Resources
Mining industry
Monitoring
Monitoring systems
New Methods and Instruments in Mining
Occupational health and safety
Optical fibers
Optics
Outbursts
Pressure
Pressure sensors
Radiant flux density
Radiation
Rock masses
Rocks
Sensors
Simulation
Steel structures
mine
Karaganda coal basin
explosive atmosphere
optic fiber
monitoring system
safety
fiber-optic sensors
underground excavation
mining
overlying rock pressure
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Summary:The ground control using optical fibers is discussed. The designed monomode fiber pressure sensor is capable to perform high-precision measurement of overlying rock mass pressure imposed on walls of underground excavation. The mathematical apparatus is presented for the calculation of radiation intensity of optical wave traveling along an optical fiber with and with no mechanical effects. The simulation model is developed for an underground excavation with steel arch support. The model is equipped with the fiber-optic monitoring system and pressure sensors. This model enables practicing the ground control methods and measurements. The critical element of the simulation model is its hardware/software complex with interface showing four check zones with fiber-optic pressure sensors. This monitoring system is explosion-proof and is suitable for operation in super hazardous mines in terms of gas and dust outbursts.
ISSN:1062-7391
1573-8736
DOI:10.1134/S1062739121020198