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Journal of the Southern African Institute of Mining and Metallurgy

On-line version ISSN 2411-9717

J. S. Afr. Inst. Min. Metall. vol.108 n.3 Johannesburg Mar. 2008

 

TRANSACTION PAPER

 

Computer simulation of air and methane flow following an outburst in transport gallery D-6, bed 409/4

 

 

W. Dziurzyński; J. Krawczyk; T. Pałka

Strata Mechanics Research Institute, Polish Academy of Sciences, Cracow, Poland

 

 


SYNOPSIS

This article outlines the results of a computer simulation reproducing the transport of a mixture of air and methane following the outburst on 25 November, 2005 in transport gallery D-6, bed 409/4, at the 'Zofiówka' hard coal mine. Based on a mathematical model, numerical method and boundary conditions from the disturbance caused by the outburst, the Ventgraph system of computer simulation programs was adopted for the study. We performed a computer simulation of the influence exerted by the outburst on the propagation of the air and methane mixture, and compared the results of this simulation with those of the actual event as registered by sensors of the mine monitoring system. A validation of the model allowed us to present temporal changes in the concentration of methane and air along flow routes.

Keywords: mine ventilation, outburst of methane, numerical simulation, monitoring system


 

 

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References

1. BERGER, J. and NOWAK, E. Methane Capturing from Mines under closure processes in the Rybnik Coal District. Proceedings 29th International Conference of Safety in Mines Research Institutes, Szczyrk, 2001.         [ Links ]

2. DZIURZYŃSKI, W., TRACZ, J., and TRUTWIN, W. On mathematical models of the flow air and gases due to outbursts in the mine ventilation networks. Archives of Mining Sciences, vol. 32, no. 1 1987. pp. 3-10.         [ Links ]

3. DZIURZYŃSKI, W., TRACZ, J., and TRUTWIN, W. Numerical simulation of the flow of air and outburst gases in a ventilation network of a mine. Archives of Mining Sciences, vol. 32, no. 1, 1987. pp. 11-26.         [ Links ]

4. DZIURZYŃSKI, W. Underground Fire Under Conditions Of Methane Inflow - Mathematical Model. Archives of Mining Sciences, vol. 36, no. 3, 1991. pp. 209-225.         [ Links ]

5. DZIURZYŃSKI, W., NAWRAT, S., ROSZKOWSKI, J., and TRUTWIN, W. Mine ventilation disturbed by outbursts. International Symposium cum Workshop on Management and Control of High Gas Emissions and Outbursts in Underground Coal Mines. Wollongong, NSW, Australia 20-24 March, 1995.         [ Links ]

6. DZIURZYŃSKI, W., PAŁKA T., and KRAWCZYK J. Ventgraph for Windows-Ventilation Engineer's Program System for Analyzing the Ventilation Network under Normal and Emergency Conditions-Simulation of Transient Flow of Air and Fire Gases. Transaction of Strata Mechanics Research Institute, Manuals, 2003.         [ Links ]

7. JAKUBÓW, A., TOR, A., and TOBICZYK, ST. The discharge of methane and rocks in a pipe telescope driven to shaft II at a level of 1,000 m in the Pniówek hard coal mine-circumstances, causes and effects. Materials of the Underground Mining School, CPPGSMiE, Polish Academy of Sciences, Kraków, 2003.         [ Links ]

8. JAKUBÓW, A. and TOR, A. Outbursts of methane and rocks in mines of the Jastrzębska Spółka Węglowa S.A. Materials of 4th School of Mining Aerology, Kraków, 2006.         [ Links ]

9. LITWINISZYN, J. A problem of dynamic of flow in conduit networks. Bulletin of Academy Polonaise Science, vol. 1, no. 3, 1951.         [ Links ]

10. LAMA, R.D. and BODZIONY, J. Outburst of gas, coal and rock in underground coal mines. (ed.) Lama & Associates, Wollongong NSW, Australia, 1996.         [ Links ]

11. LITWINISZYN, J. A review of rock-gas outburst. Proceedings of International Symposium on Mining Technology & Science. Trans Tech Publication, 1986.         [ Links ]

12. TRACZ, J. On the applicability of mathematical models of the flow air and gases due to outbursts in the mine ventilation networks. Archives of Mining Sciences, vol. 32, no. 1, 1987. pp. 27-32.         [ Links ]

13. XIAO-ZHAO, LI. and AN-ZENG, HUA. Prediction and prevention of sandstonegas outbursts in coal mines. International Journal of Rock Mechanics and Mining Sciences, vol. 43, 2006. pp. 2-18.         [ Links ]

14. WIERZBICKI, M. and MŁYNARCZYK, M. Microscopic Analysis of Structure of Coal Samples Collected after an Gas And Coal Outbarst In the Gallery D-6 Coal Seam 409/4 in the 'Zofiowka' Coal Mine, Archives of Mining Sciences, vol. 51, no. 3, 2006. pp. 577-588.         [ Links ]

 

 

Paper received Apr. 2007
Revised paper received Jan. 2008

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