DETERMINATION OF SECOND WORKING DEGASSING INFLUENCE ON COAL ORE MASSIFS Russian patent published in 2015 - IPC E21C39/00 

FIELD: mining.

SUBSTANCE: claimed process comprises the determination of maximum distances of said degassing influence on rocks of the bed and soil. For this, appropriate instruments are used to define the level of coal worked and close seams and degassing level dependence in underworked and overworked coal rock massifs in the second working area. Note here that maximum distances of degassing influence of second working on close coal seams are defined by the distances, the lengths, cut off by revealed relations on the axis of geometrical location of magnitudes of the maximum gas release from close coal seams relative to the second working face line. Note also that indicators of the close seam natural degassing are determined by linear relations including those of second working degassing influence on worked and close coal seams, location of maximum gas release from close coal seams relative to second working face line and the coefficient allowing from quantitative decrease in degassing influence on close coal seams remote from the worked seam.

EFFECT: valid magnitudes of the influence, maximum underworked and overworked coal depths at second working areas, hence, precise forecast of the wall gas content and determination of close coal seam degassing parameters at the sections with high rates of face advance.