Mining Goes Digital – Mueller et al. (Eds)
© 2019 Taylor & Francis Group, London, ISBN 978-0-367-33604-2
647
Fibre optic sensor for coal mine combustion detection
T.Y. Liu
Laser Institute, Shandong Academy of Sciences, China
X.J. Meng & F.Q. Wang
Yankuang Coal Mine Group, China
R.C. Li
Shandong Micro-Sensor Photonics Ltd., China
M.Y. Hou & Z.W. Wang
Laser Institute, Shandong Academy of Sciences, China
J. Hu
Shandong Micro-Sensor Photonics Ltd., China
Y.F. Li
Laser Institute, Shandong Academy of Sciences, China
L.Z. Ma
Shandong Micro-Sensor Photonics Ltd., China
Y.B. Wei
Laser Institute, Shandong Academy of Sciences, China
S.X. Zhang
Shandong Micro-Sensor Photonics Ltd., China
ABSTRACT: Spontaneous combustion is a major safety hazard in underground coal mines.
Conventional technology is based on tubing bundle gas sampling system and chromatography
based gas monitoring instrument, which is typically located on the ground monitor centre and
suffering from long delay time, being cumbersome to maintain and inaccuracy due to possible
tubing leakage. An intrinsically safe fibre optic distributed temperature sensor and interrogator
for based on multimode fibre and Raman scattering principle have been developed. The fibre
optic cables are laid down in the long wall ventilation tunnels and left embedded inside the goaf.
The interrogator is typically installed in the underground power station with data transmitted
to the ground monitor centre. Protection procedures have been developed so that the fibre optic
cables have high probability of survival inside the goaf and sealed area of the underground coal
mines. Early warning and location of spontaneous combustion hazards have been successfully
demonstrated and fire hazard was prevented.
Keywords: Fiber Optic Distributed Temperature Sensor, Coal Combustion, Laser Gas Sensor, Hazard, Detection
1 INTRODUCTION
Coal mine naturally affects the safety of coal mine production. Traditional monitoring means
mostly use bundle tube system. Usually, analytical instruments are placed in the ground
© 2019 Taylor & Francis Group, London, ISBN 978-0-367-33604-2
647
Fibre optic sensor for coal mine combustion detection
T.Y. Liu
Laser Institute, Shandong Academy of Sciences, China
X.J. Meng & F.Q. Wang
Yankuang Coal Mine Group, China
R.C. Li
Shandong Micro-Sensor Photonics Ltd., China
M.Y. Hou & Z.W. Wang
Laser Institute, Shandong Academy of Sciences, China
J. Hu
Shandong Micro-Sensor Photonics Ltd., China
Y.F. Li
Laser Institute, Shandong Academy of Sciences, China
L.Z. Ma
Shandong Micro-Sensor Photonics Ltd., China
Y.B. Wei
Laser Institute, Shandong Academy of Sciences, China
S.X. Zhang
Shandong Micro-Sensor Photonics Ltd., China
ABSTRACT: Spontaneous combustion is a major safety hazard in underground coal mines.
Conventional technology is based on tubing bundle gas sampling system and chromatography
based gas monitoring instrument, which is typically located on the ground monitor centre and
suffering from long delay time, being cumbersome to maintain and inaccuracy due to possible
tubing leakage. An intrinsically safe fibre optic distributed temperature sensor and interrogator
for based on multimode fibre and Raman scattering principle have been developed. The fibre
optic cables are laid down in the long wall ventilation tunnels and left embedded inside the goaf.
The interrogator is typically installed in the underground power station with data transmitted
to the ground monitor centre. Protection procedures have been developed so that the fibre optic
cables have high probability of survival inside the goaf and sealed area of the underground coal
mines. Early warning and location of spontaneous combustion hazards have been successfully
demonstrated and fire hazard was prevented.
Keywords: Fiber Optic Distributed Temperature Sensor, Coal Combustion, Laser Gas Sensor, Hazard, Detection
1 INTRODUCTION
Coal mine naturally affects the safety of coal mine production. Traditional monitoring means
mostly use bundle tube system. Usually, analytical instruments are placed in the ground