ABSTRACT
The gas outburst control method is adopted to pre-evacuate the serious overburden of gas in the Huoerxinhe No. 3 coal seam by the long-distance bedding directional borehole. The results show that the gas content in the test point decreases from 13.81 to 7.81 m 3/t after 25 days of gas drainage by long-distance bedding directional borehole and the gas pre-pumping rate is about 43.30\. The driving speed of the main transport roadway is 1.48 times that of the traditional ordinary drilling drainage measures, and the tunneling efficiency indicators have not exceeded. This method confirmed that the long-distance bedding directional borehole can effectively reduce the amount of drilling holes constructed, increase the gas extraction rate compared to that of the traditional ordinary drilling hole, effectively eliminate the danger of protruding, and realize the safe and rapid excavation of the coal mine roadway.
