METHOD OF DEGASSING COAL SEAM FACE ZONE Russian patent published in 2002 - IPC

Abstract RU 2183276 C2

FIELD: coal mining industry; applicable in degassing of coal seams. SUBSTANCE: method is characterized by the fact that relieving slot is formed parallel to seam plane without reaching the haulage working through value of natural degassing. Degassing slots parallel to breast are additionally formed without reaching the haulage working and airway. Gas is sucked off in points of intersection of relieving and degassing slots on side of airway. EFFECT: higher efficiency of degassing, provision of high safety of stoping operations by gas factor. 3 cl, 2 dwg

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RU 2 183 276 C2

Authors

Kariman S.A.

Dates

2002-06-10—Published

2000-05-12—Filed