TY - GEN
T1 - Validation of Bare FBG Sensors in Monitoring Compressive Rock Mass Deformation
AU - Gong, Hongkui
AU - Kizil, Mehmet S.
AU - Chen, Zhongwei
AU - Aminossadati, Saiied M.
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/7/18
Y1 - 2017/7/18
N2 - Geotechnical stability is a major concern for the long-term safety and integrity in underground coal mines.The major issues with the current roof stability monitoring system in underground coal mines include lackof systematic real time data recording scheme and using electrical sensing components that are notintrinsically safe in underground explosive workplace. Although an advanced system based on fibre opticsensing (FOS) technologies have increasingly drawn attention by mining industry, their applications in coalmines are still challenged by a number of factors, such as the survivability in large strain range, appropriatefibre encapsulation and installation methods and minimisation of measurement errors due to the straintransfer loss. This paper presents the results of preliminary experiment in developing fibre optic based roofstability monitoring system forunderground coal mines, including the validation of surface mounting bareFBGs in rock mass compressive test. The accuracy of the bare FBG sensors in measuring compressivestrain for rock mass are validated against the electrical strain gauges and linear variable differentialtransducer (LVDT). Using the stress-strain curve and Young's modulus of the standard samples as areference, the experiment results show that the bare FBG and electrical strain gauges can provide accurateand reliable compressive strain measurements for material with different mechanical properties.
AB - Geotechnical stability is a major concern for the long-term safety and integrity in underground coal mines.The major issues with the current roof stability monitoring system in underground coal mines include lackof systematic real time data recording scheme and using electrical sensing components that are notintrinsically safe in underground explosive workplace. Although an advanced system based on fibre opticsensing (FOS) technologies have increasingly drawn attention by mining industry, their applications in coalmines are still challenged by a number of factors, such as the survivability in large strain range, appropriatefibre encapsulation and installation methods and minimisation of measurement errors due to the straintransfer loss. This paper presents the results of preliminary experiment in developing fibre optic based roofstability monitoring system forunderground coal mines, including the validation of surface mounting bareFBGs in rock mass compressive test. The accuracy of the bare FBG sensors in measuring compressivestrain for rock mass are validated against the electrical strain gauges and linear variable differentialtransducer (LVDT). Using the stress-strain curve and Young's modulus of the standard samples as areference, the experiment results show that the bare FBG and electrical strain gauges can provide accurateand reliable compressive strain measurements for material with different mechanical properties.
KW - Fibre Bragg Grating
KW - Linear variable differential transducer
KW - Strain gauge
KW - Strain validation
UR - http://www.scopus.com/inward/record.url?scp=85027688553&partnerID=8YFLogxK
U2 - 10.1109/OFSIS.2017.20
DO - 10.1109/OFSIS.2017.20
M3 - 会议稿件
AN - SCOPUS:85027688553
T3 - Proceedings - 2017 2nd International Conference of Fibre-Optic and Photonic Sensors for Industrial and Safety Applications, OFSIS 2017
SP - 85
EP - 90
BT - Proceedings - 2017 2nd International Conference of Fibre-Optic and Photonic Sensors for Industrial and Safety Applications, OFSIS 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2nd International Conference of Fibre-Optic and Photonic Sensors for Industrial and Safety Applications, OFSIS 2017
Y2 - 8 January 2017 through 10 January 2017
ER -