Abstract
A new concept, explosibility safety factor (SF), is introduced and defined to improve the safety for the rescue works. It can clearly show how dangerous the current atmospheric status is if the state point locates in any not-explosive zones and also provides a measurement method to measure the safety margin when dealing with the explosibility of a sealed mine atmosphere. A series of theoretical explosion risk assessment models to fully analyze the evolution of explosion risk in an underground mine atmosphere are proposed: (1) for an “not-explosive” atmosphere, judging the evolution of explosion risk and estimating the change-of-state time span from “not-explosive” to “explosive”; (2) for an “explosive” atmosphere, a set of mathematical equations are theoretically derived to estimate the inertisation time of a sealed mine atmosphere by using different inerting approaches and the “critical” time span of moving out of explosive zone and stating the best risk mitigation strategy are estimated.
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References
Cheng, J., Luo, Y., & Zhou, F. (2015). Explosibility safety factor: An approach to assess mine gas explosion risk. Fire Technology, 51(2), 309–323.
Cheng, J., Wang, C., & Zhang, S. (2012). Methods to determine the mine gas explosibility—An overview. Journal of Loss Prevention in the Process Industries, 25(3), 425~435.
Greuer, R. (1974). Study of mine fire fighting using inert gases, U.S. Bureau of Mines Contract Report No. S0231075, pp. 135.
Griffin, K. R., Luxbacher, K. D., Scharfik, S. J., et al. (2014). Comprehensive ventilation simulation of atmospheric monitoring sensors in underground coal mines, https://www.energy.vt.edu/Publications/GriffinKenneth_AMS_FINALPaper.pdf.
Hartman, H. L., Mutmansky, J. M., Ramani, R. V., & Wang, Y. J. (1997). Mine ventilation and air conditioning. New York: Wiley-Interscience.
Hirano, T. (2008). Modeling of gas explosion phenomena. In K. Saito (Ed.), Progress in scale modeling (pp. 61–73). Dordrecht: Springer Press.
Holding, W. (1992). A Re-look at explosibility diagrams. In R. Hemp (Ed.), Proceedings of the 5th international mine ventilation congress (pp. 171–181). Johannesburg: The Mine Ventilation Society of South Africa.
Ito, A., Konishi, T., & Saito, K. (2008). Scale effects of flame structure in medium-size pool fire. In K. Saito (Ed.), Progress in scale modeling (pp. 99–107). Dordrecht: Springer Press.
Szlazak, N., & Piergies, K., (2016). Method for determining the effectiveness of inertisation of self-heating places in goaf of longwall in hard coal mines. In: Proceedings of Selected Issues Related to Mining and Clean Coal Technology (pp. 383–390), Krakow, Poland, September 19–21, 2016.
Williams, F. A. (2008). Mechanistic aspects of the scaling of fires and explosions. In K. Saito (Ed.), Progress in scale modeling (pp. 29–37). Dordrecht: Springer Press.
Zipf, R. K., & Mohamed, K. M. (2010). Composition change model for sealed atmosphere in coal mines. In S. Hardcastle & D. McKinnon (Eds.), Proceedings of the 13th United States/North American mine ventilation symposium (pp. 493–500). Sudbury: Laurentian University.
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Cheng, J. (2018). Safety Operations and Assessment for Sealed Mine Atmosphere. In: Explosions in Underground Coal Mines. Springer, Cham. https://doi.org/10.1007/978-3-319-74893-1_5
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DOI: https://doi.org/10.1007/978-3-319-74893-1_5
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