COMPLEX CONTROL METHOD OF GAS EMISSION IN EXTRACTION SECTIONS AT DEVELOPMENT OF THICK AND SUPERIMPOSED HIGHLY GAS-BEARING GENTLY SLOPING COAL BEDS Russian patent published in 2014 - IPC E21F7/00 

FIELD: mining.

SUBSTANCE: complex control method of gas emission at development of a thick coal bed consists in separation of the same bed as to thickness into upper and lower beds so that an interlayer patch is left between them, development of methane drainage boreholes for each bed, ventilation and belt entries with further removal of return air and gas mixture at development of the bed. At development of similar entries in upper and lower beds, their pair connection with runs is performed. After outlining of extraction pillars the ventilation entry of the lower bed is connected through an end-on mine working to a gas suction plant. As the upper bed development proceeds, the runs that are the closest to its working face are opened in turn for entry of air from the belt entry and discharge of gas mixture from upper connection of the working face of the upper bed through a return air outlet system and through the ventilation entry of the lower bed to the end-on mine working, and after that, to the gas suction plant. Then, the lower bed is developed; with that, after operation of the methane drainage borehole of the lower bed is finished, the lower bed is saturated through the above borehole with antipyrogens.

EFFECT: improving control efficiency of gas emission in order to provide high productivity and safe extraction of coal and methane.

2 dwg