ECOAL Project—Delivering Solutions for Integrated Monitoring of Coal-Related Fires Supported on Optical Fiber Sensing Technology

The combustion of coal wastes resulting from mining is of particular environmental concern, and the importance of proper management involving real-time assessment of their status and identification of probable evolution scenarios is recognized. Continuous monitoring of the combustion temperature and emission levels of certain gases allows for the possibility of planning corrective actions to minimize their negative impact on the surroundings. Optical fiber technology is well suited to this purpose and here we describe the main attributes and results obtained from a fiber optic sensing system projected to gather data on distributed temperature and gas emissions in these harsh environments.

[1]  Joana Ribeiro,et al.  Burning of coal waste piles from Douro Coalfield (Portugal): Petrological, geochemical and mineralogical characterization , 2010 .

[2]  Robert B. Finkelman,et al.  Potential health impacts of burning coal beds and waste banks , 2004 .

[3]  Eliseo Monfort,et al.  Environmental characterization of burnt coal gangue banks at Yangquan, Shanxi Province, China , 2008 .

[4]  Tongyu Liu,et al.  Development and Utilisation of Fibre Optic-based Monitoring Systems for Underground Coal Mines , 2014 .

[5]  Glenn B. Stracher,et al.  Geology of Coal Fires: Case Studies from Around the World , 2007 .

[6]  S. Martín-López,et al.  Raman-assisted Brillouin optical time-domain analysis with sub-meter resolution over 100 km. , 2012, Optics express.

[7]  Joana Ribeiro,et al.  Chapter 18 – Mineralogy and Magnetic Parameters of Materials Resulting from the Mining and Consumption of Coal from the Douro Coalfield, Northwest Portugal , 2015 .

[8]  Joana Ribeiro,et al.  Identification of nanominerals and nanoparticles in burning coal waste piles from Portugal. , 2010, The Science of the total environment.

[9]  Weijiao Song,et al.  The properties of Çan Basin coals (Çanakkale—Turkey): Spontaneous combustion and combustion by-products , 2015 .

[10]  Joana Ribeiro,et al.  Petrographic and geochemical characterization of coal waste piles from Douro Coalfield (NW Portugal) , 2011 .

[11]  Harold J. Annegarn,et al.  The spontaneous combustion of coal and its by-products in the Witbank and Sasolburg coalfields of South Africa , 2007 .

[12]  Paul L. Younger,et al.  Environmental impacts of coal mining and associated wastes: a geochemical perspective , 2004, Geological Society, London, Special Publications.

[13]  Joana Ribeiro,et al.  Geochemistry of self-burning coal mining residues from El Bierzo Coalfield (NW Spain): Environmental implications , 2016 .

[14]  X. Bao,et al.  Differential pulse-width pair BOTDA for high spatial resolution sensing. , 2008, Optics express.

[15]  Sonia Martin-Lopez,et al.  Signal-to-Noise Ratio Improvement in BOTDA Using Balanced Detection , 2014, IEEE Photonics Technology Letters.

[16]  L. Thévenaz,et al.  Simple distributed fiber sensor based on Brillouin gain spectrum analysis. , 1996, Optics letters.

[17]  Orlando Frazão,et al.  Ammonia sensing system based on wavelength modulation spectroscopy , 2015 .

[18]  R. A. Perez-Herrera,et al.  Fiber optic sensing system for monitoring of coal waste piles in combustion , 2014, Other Conferences.

[19]  R. A. Perez-Herrera,et al.  Fiber optic sensing system for temperature and gas monitoring in coal waste pile combustion environments , 2015, International Conference on Optical Fibre Sensors.

[20]  M. Fabiańska,et al.  Organic components in thermally altered coal waste: Preliminary petrographic and geochemical investigations , 2007 .

[21]  Yage Zhan,et al.  Fiber grating sensors for high-temperature measurement , 2008 .

[22]  Joana Ribeiro,et al.  Polycyclic aromatic hydrocarbons (PAHs) in burning and non-burning coal waste piles. , 2012, Journal of hazardous materials.

[23]  Lia Duarte,et al.  Distributed Temperature Measurement in a Self-Burning Coal Waste Pile through a GIS Open Source Desktop Application , 2017, ISPRS Int. J. Geo Inf..

[24]  F. G. Bell,et al.  Environmental impacts associated with an abandoned mine in the Witbank Coalfield, South Africa , 2001 .

[25]  Manuel Lopez-Amo,et al.  Real-Time FFT Analysis for Interferometric Sensors Multiplexing , 2015, Journal of Lightwave Technology.

[26]  Luc Thévenaz,et al.  Wavelength modulation spectroscopy: combined frequency and intensity laser modulation. , 2003, Applied optics.

[27]  Magdalena Misz-Kennan,et al.  Application of organic petrology and geochemistry to coal waste studies , 2011 .

[28]  Joana Ribeiro,et al.  Petrography and mineralogy of self-burning coal wastes from anthracite mining in the El Bierzo Coalfield (NW Spain) , 2016 .

[29]  A. Pinto de Jesús,et al.  Evolução sedimentar e tectónica da Bacia Carbonífera do Douro (Estefaniano C inferior, NW de Portugal) , 2003 .

[30]  Orlando Frazão,et al.  Experimental and Numerical Characterization of a Hybrid Fabry-Pérot Cavity for Temperature Sensing , 2015, Sensors.

[31]  Volker Thomsen,et al.  Limits of Detection in Spectroscopy , 2003 .

[32]  James C. Hower,et al.  Mineralogy and geochemistry of coal wastes from the Starzykowiec coal-waste dump (Upper Silesia, Poland) , 2014 .

[33]  N. Cressie.  Limits of detection , 1994 .

[34]  Glenn B. Stracher,et al.  Coal fires burning out of control around the world : Thermodynamic recipe for environmental catastrophe , 2004 .

[35]  Liang Chen,et al.  Recent Progress in Distributed Fiber Optic Sensors , 2012, Sensors.

[36]  Paul C. Hackley,et al.  Review and update of the applications of organic petrology; Part 2, Geological and multidisciplinary applications , 2012 .

[37]  Magdalena Misz-Kennan,et al.  Thermal transformation of organic matter in coal waste from Rymer Cones (Upper Silesian Coal Basin, Poland) , 2010 .

[38]  Yu Zhang,et al.  An Integrated Environment Monitoring System for Underground Coal Mines—Wireless Sensor Network Subsystem with Multi-Parameter Monitoring , 2014, Sensors.