Determination of ventilation and degassing rational parameters at extraction areas of coal mines

Selection of ventilation and degassing rational parameters for implementation of extraction areas stable work at coal mines is an actual task. The aim of the given work is to determine air consumption at an extraction area and degassing parameters of underworked seams in order to provide planned longwall output and safe concentrations of methane in an outgoing air current. As a result of the developed methodology of ventilation and degassing regimes calculations during their simultaneous use, analytical dependences of longwall face output on air consumption and degassing boreholes number have been received. Use of these dependences during provision of coal stable extraction on a mine will allow to manage process of gas release into mine workings of extraction areas.