METHOD TO MINE SLOPING AND INCLINED COAL BEDS OF AVERAGE CAPACITY Russian patent published in 2013 - IPC E21C41/18 

FIELD: mining.

SUBSTANCE: method includes preparation of a mine field by arrangement of transport and ventilation mines, alternate arrangement of mine chambers from a transport to a ventilation mine with anchor fixation of a roof, suppression of chamber-to-chamber pillars by coal mining with a frontal type combine and transportation of broken coal within the mine chamber. Adjacent chamber-to-chamber pillars are suppressed simultaneously with straight bottoms with a lag of the straight bottom of the chamber-to-chamber pillar arranged at the side of the non-mined coal massif from the straight bottom of the chamber-to-chamber pillar arranged at the side of collapsed rocks, by the value not exceeding 10÷12 m, and formation of a ventilation department by the mined part of the chamber of the ventilation compartment located between straight bottoms of the specified pillars.

EFFECT: higher efficiency of mining due to reduced coal losses by means of total mining of chamber-to-chamber pillars with provision of works safety.

3 cl, 3 dwg