Gas Net Drainage and Utilization Technology of High Outburst Mine

Abstract：In order to have a mine safety mining with the mine gas drainage during the coal mining process and to have the gas utilized for the power generation,to have a green mining to reach the drainage,mining and utilization circulated economic development mode and to minimize the carbon emission,with the net gas drainage system established in No.4 Mine of Pingdingshan Coal Mining Group,with the application of the low content（6%~10%） gas power generation technology,the mine temperature cooling technology with non electric lithium bromide machine set and the ultra low gas content（0.2%~0.4%） ventilation oxidized technology,the mine gas drainage rate could be reached to 70%,the gas content of the air return flow of the coal mining face could be reduced from 0.8% to 0.3%~0.4%,the safety coefficient could be improved by two times,the mine annual gas utilization could be reached 7.8 million m3 and could be for 6 million kW·h,which could be equal to reduce the carbon emission of 90 500 t and the mine could have coal and gas mining jointly.