Gas Net Drainage and Utilization Technology of High Outburst Mine

In order to have a mine safety mining with the mine gas drainage during the coal mining process and to have the gas uillized 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 drainag e 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 tem perature 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 draina ge 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 cofficient could be i mproved 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 emis sion of 90 500 t and the mine could have coal and gas mining jointly.