METHOD FOR MINING THICK STEEPLY DIPPING AND INCLINED FIRE-HAZARDOUS COAL SEAMS

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