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Microscopic Analysis of Structure of Coal Samples Collected After an Gas And Coal Outbursts... |
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Microscopic Analysis of Structure of Coal Samples Collected After an Gas And Coal Outbursts in the Gallery D-6,Coal Seam 409/4 in the „Zofi ówka” Coal Mine (Upper Silesian Coal Basin) Authors: M. Wierzbicki, M. Młynarczuk
One of the possible causes of rock and gas outbursts in collieries is structural changes in coal occurring
in geologically disturbed areas. This paper summarises the results of measurements of rock fracturing as
well as vitrinite and mylonite content after an outburst in the gallery D-6 in the “Zofi ówka” coal mine.
Measurement data show that coal in this region contains vast amounts of structurally deformed coal, with
a thick network of internal fracturing. Such structure of the coal matter may facilitate gas accumulation
in coal’s internal structure and gas release whenever pressure changes should occur. |
2011