Аңдатпа
Abstract The mines of the Karaganda basin develop coal seams that are very gas-rich in methane and liable to sudden emissions of coal and gas. The mining of one ton of coal is accompanied by the methane emission from 30 to 45 m3 of into the mine workings, therefore, special attention is paid to the issues of reducing the methane content to safe values in the mining areas and its utilization. The gas content of mine working areas ranges from 30 to 100 m3/min or more. The increase in air supply to the site is limited by the air speed limit and the rational, from an economic point of view, cross-section areas of the mine workings.