Abstract：In view of the high gas in the process of multi-coal seam mining and the influence of mine safety mining, the method of source prediction is proposed to predict and analyze the gas source in the coal seam of the working face. According to the results of gas source analysis, comprehensive gas control measures and schemes are formulated, such as gas drainage in the coal seam, separate drainage in adjacent coal seams, gas drainage in goaf of working face, and establishment of ' U ' type mine drainage system. The results show that the gas concentration and air discharge of the working face are significantly reduced, the maximum absolute gas emission of the working face coal seam is reduced from 5.8 m3/min to 3.9 m3/min, and the maximum gas concentration of the air discharge of the working face is reduced from 0.45% to 0.19%. During the mining period of the working face, there are no accidents such as abnormal gas concentration and gas overrun, and the safe and smooth mining of the working face is realized.
张 立1，2. 多煤层开采工作面瓦斯综合防治技术研究与应用[J]. 煤炭与化工, 2022, 45(2): 139-142.
Zhang Li 1,2. Research and application of gas comprehensive prevention and control technology in multi-seam minig face. CCI, 2022, 45(2): 139-142.
