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METHOD FOR MINING THICK STEEPLY DIPPING AND INCLINED FIRE-HAZARDOUS COAL SEAMS
METHOD FOR MINING THICK STEEPLY DIPPING AND INCLINED FIRE-HAZARDOUS COAL SEAMS
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机译:厚煤层和倾斜火险煤层的开采方法
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摘要
FIELD: mining. SUBSTANCE: method for mining thick steeply dipping and inclined fire-hazardous coal seams includes mining and filling of worked-out space of the upper part of the level, subsequent extraction of lower sublevels by inclined slices with roof caving; treatment of prophylactic horizontal or transverse inclined slice in each sublevel; extraction of coal in sublevels leads by far the stoping operations in the upper sublevels with individual ventilation of stoping and development faces in each sublevel. EFFECT: higher efficiency. 2 dwg
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