Abstract:

Mao Khe Coal Mine is located in Dong Trifeu District, Quang Ninh Province, under the management of Mao Khe Coal Company-Vinacomin. Mao Khe coal mine is classified as Super Methane according to the Decision of the Ministry of Industry and Trade, this is the most dangerous level of methane for underground mines. Methane contained in coal seams is the cause of methane gas bursts, releasing intense methane gas causing explosions of methane gas in underground coal mines. To be able to prevent the risk of methane explosion in coal mines, it is necessary to control the concentration of methane gas in the mines, so it is necessary to take the initiative to take appropriate measures to remove the gas first, when exploiting coal seams with high methane content. The paper has studied the characteristics of geological conditions, gas content of coal seams and ventilation diagram of Mao Khe coal mine and proposed solutions of methane removal suitable for Mao Khe coal mine.