METHOD FOR MINING THICK STEEPLY INCLINED AND STEEP COAL BEDS Russian patent published in 2010 - IPC E21C41/18 

FIELD: mining.

SUBSTANCE: method of mining includes separation of mine sections by slopes into sections, mechanical excavation of coal by combine in horizontal or flat layers in descending order by long cuts along length, transportation of coal, filling of mined space with cast hardening mixture. Loose coal from faces is transported along chutes by hydraulic transport, after mining of cuts, chutes are covered with the same chutes to form technological mines after cuts are filled with hardening mixture. In order to transfer combine into underlying layer, spiral cut is worked, with lower size along height compared to cut from slope to roof and back to bed soil at the level of overlying level, with the possibility of combine movement after mining of overlying layer along spiral mine, to expand its size along height to size of cuts. Spiral mine serves for hydraulic transport of coal and ventilation of mine.

EFFECT: increased efficiency of mining face operation and improved safety of mining.

4 cl, 8 dwg