The Calculation of Methane Concentration Emitted from the Coal Face

Open access


The Paskov Mine belongs to the company OKD, a.s. with the production of hard coking coal from 1970. The applied mining method is the slabbing method in controlled caving, excavating the coal pillar by means of coal plough equipment loading mine run on rake conveyers and securing the excavation area with individual hydraulic or mechanical supports. The coal face is planned as one of the coal faces in continuous extraction of the seam by a shearer.

Using the shearer at mines in the Paskov Mine is not a novelty. Shearer mining represents some problems. Besides the hazard of methane-air ignition, there is a mixture of coal dust - methane - air, which is more dangerous even in the case of lower concentrations of dust and methane than their individual lower limits of explosiveness. A decision was made then that shearers would gradually be replaced with coal ploughs in all coal faces.

The article contains the calculation of the volume of methane emitted as a result of excavation, determining methane concentration during excavation, lowering the hazard of methane layers being formed, and finally evaluating the suitability of the proposed system of the coal face ventilation.

Beňová E., Koudelková J., Prokop P., Danihelka P., 2012. The analysis of the risks of the firedamp leakage at the Ostrava- Karvina mine district. Acta Montanistica Slovaca, Vol. 17, Iss. 2, p. 85-92.

Berger J., Markiewicz J., Dolega T., 2010. Influence of distance of exploitational front from drainage boreholes on thein efficiency with use the U ventilation systém. Arch. Min. Sci., Vol. 55, No 3, p. 561-571.

Bołoz Ł., 2013. Unique project of single-cutting head longwall shearer used for thin coal seams exploitation. Arch. Min. Sci., Vol. 58, No 4, p. 1057-1070.

Dziurzyński W., Krach A., Pałka T., 2009. Method of Regulating Elements of the Methane Drainage Network Using Computer Simulation. Arch. Min. Sci., Vol. 54, No 2, p. 159-187.

Dziurzyński W., Krach A., Pałka T., 2014. Computer simulation of the propagation of heat in abandoned workings insulated with slurries and mineral substances. Arch. Min. Sci., Vol. 59, |No 1, p. 3-23.

Hudeček V., Urban P., Stavinoha J., 2010. Problems of higher gas emission and coal and gas outbursts in countries of the word and in the Czech Republic. Journal of Mines, Metals and Fuels, 8/2010.

Lát J., 1988. Dobývání nízkých ploše uložených uhelných slojí ve složitých důlně geologických podmínkách. Dočasná vysokoškolská učebnice. Ministerstvo školství, mládeže a tělovýchovy, Praha.

Magnusková J., Matušková S., Bartoňová J., Pavelek Z., 2011. Problems of cooling sealed fire fields in underground coal mines. Journal of Mines, Metals & Fuels. Vol. 59, No. 10, October 2011, p. 321-327.

Prokop P., Zapletal P., Fiurášková D. 2010. Re-Opening of the Longwall No. 28731 Sealed Due to Spontaneous Combustion of Coal. Arch. Min. Sci., Vol. 55, No 3, p. 537-547.

Taraba B., Pavelek Z., SlovákV., Janek J., 2009. Effect of Pre-Treatment of the Coal on its Oxidation Behaviour. Mine Ventilation, Volume 2). Ninth International Mine Ventilation Congress, India, Oxford &IBH Publishing Co. Pvt. Ltd. New Delhi.

Taraba B., Pavelek Z., 2014. Investigation of the spontaneous combustion susceptibility of coal using the pulse flow calorimetric method: 25 years of experience. Fuel, 1 25, DOI: 10.1016/j.fuel.2014.02.024.

Zapletal P., Prokop P., Dorazil V., 2011. The Regulation of Ventilation by Changing The Operation of The Main Fan and its Impact on The Face Worked under The Main Haulage Level. GeoScience Engineering, VŠB-TU Ostrava.

Archives of Mining Sciences

The Journal of Committee of Mining of Polish Academy of Sciences

Journal Information

IMPACT FACTOR 2016: 0.550
5-year IMPACT FACTOR: 0.610

CiteScore 2016: 0.72

SCImago Journal Rank (SJR) 2016: 0.320
Source Normalized Impact per Paper (SNIP) 2016: 0.950


All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 98 98 11
PDF Downloads 42 42 9