| 摘要 |
FIELD: mining. ^ SUBSTANCE: invention refers to mining and can be implemented at coal mines during development edge and steeply pitching beds of coal by hydro-cutting. The procedure consists in exposing extraction field, in dividing it to extraction blocks, in leaving inter-block coal solids, in exposing extraction blocks with ventilation and accumulating crosscuts, in driving load handling slopes, ventilation furnaces and pulp furnaces, in dividing extraction blocks to stories, in driving story extraction drifts, and in mining stories of extraction blocks with a system of story hydro-cutting by passes along strike from story extraction drifts and facilitating rock falling in stripped area. Mining of stories is performed in a descending order. Exposure of extraction field is carried out at flanks with ventilation and accumulating crosscuts wherefrom coal is extracted from solids with the system of extraction; also stripped area is stowed with non-combustible fill; the solid functions as a protection for crosscuts forming a barrier solid. Block mining within ranges of an extraction pillar is performed successively starting from a mining block adjoining the formed barrier solid. Along the whole length of the extracting pillar inter-block coal solids are mined together with stories of adjacent mined extraction blocks. ^ EFFECT: increased safety of miners labour due to elimination of endogenous fires and increased efficiency owing to extraction of inter-block coal solids. ^ 2 dwg |
