Abstract
The authors have revealed features of local minimum methane concentration in drainage holes and causes of the methane concentration zonality. The offered hypothesis on methane release in drainage holes accounts for zonal disintegration of rock mass around an excavation.
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Original Russian Text © V.S. Brigida, N.N. Zinchenko, 2014, published in Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2014, No. 1, pp. 69–74.
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Brigida, V.S., Zinchenko, N.N. Methane release in drainage holes ahead of coal face. J Min Sci 50, 60–64 (2014). https://doi.org/10.1134/S1062739114010098
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DOI: https://doi.org/10.1134/S1062739114010098