Small-scale testing of coal dust explosion propagation and relation to active barrier suppression systems

• Autorzy: Johnson Catherine , Rutter Barbara , Urban Christopher , Schott Joseph , Doucet David , Moore Chance , Perry Kyle

Identyfikatory

DOI

10.2478/ntpe-2019-0034

• Języki publikacji: EN

Abstrakty

EN

Coal dust explosions are a lethal threat to anyone working in an underground coal mine. Many coal mining countries including Australia and much of Europe already utilize passive barrier explosion suppressant systems but due to differences in ventilation patterns in the United States, simple passive systems such as the bagged barrier are not as cost effective. Active systems are triggered by properties of an explosion, such as pressure, heat, or light, and release or project a suppressant into the environment to suppress an explosion. To deploy an active system, the best sensor and suppressant release location and spacing must be determined; this must account for total system latency and explosive propagation speed. A 10:1 model of a longwall entry system has been developed to study the pressure wave propagation of coal dust explosions and consequent triggering of different suppressants. The scaled model, with its removable stoppings, allows multiple potential propagation pathways for an explosion to be repeatedly tested, different from typical straight shock tunnel tests. The layout also facilitates the placement of sensors and cameras to fully observe and document the tests. The pressure wave characteristics found at crosscuts and corners will aid in the development of active barrier trigger systems and spacing of suppressant release locations.

Słowa kluczowe

EN

coal dust; explosion; mine; active barrier

PL

pył węglowy; wybuch; kopalnia; bariera aktywna

• Wydawca: STE GROUP ; De Gruyter
• Czasopismo: New Trends in Production Engineering
• Rocznik: 2019
• Tom: Vol. 2, Iss. 1
• Strony: 321--329
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Johnson Catherine

• Missouri University of Science and Technology, USA

autor

Rutter Barbara

• Missouri University of Science and Technology, USA

autor

Urban Christopher

• Missouri University of Science and Technology, USA

autor

Schott Joseph

• Missouri University of Science and Technology, USA

autor

Doucet David

• Missouri University of Science and Technology, USA

autor

Moore Chance

• Missouri University of Science and Technology, USA

autor

Perry Kyle

• Missouri University of Science and Technology, USA

Bibliografia

• 1. Hill-Davis, A. (2014) SECURE NIOSH’S LAKE LYNN EXPERIMENTAL MINE Background. Available at: https://cdn.ymaws.com/www.ima-na.org/resource/dynamic/blogs/20140612_164243_31683.pdf (Accessed: 20 June 2019).
• 2. Mc Ateer, J. D. et al. (2011) Upper Big branch. Available at: http://s3.documentcloud.org/documents/96334/upperbigbranchreport.pdf (Accessed: 20 June 2019).
• 3. Sapko, M. J. et al. (2000) ‘Experimental mine and laboratory dust explosion research at NIOSH’, Journal of Loss Prevention in the Process Industries. Elsevier, 13 (3-5), pp. 229-242. doi: 10.1016/S0950-4230(99)00038-8.
• 4. Schafler, J. R. (2018) Management of coal dust explosions in United States’ coal mines using bag type passive explosion barriers. Missouri University of Science and Technology. Available at: https://scholarsmine.mst.edu/masters_theses/7782 (Accessed: 19 June 2019).