淮南高突煤层边掘边抽合理抽放参数研究

在谢一矿高突煤层B11煤层边掘边抽防突措施试验基础上，分析了采动应力集中、瓦斯及煤体结构对煤巷掘进中煤与瓦斯突出的影响，试验研究了钻孔抽放瓦斯后对工作面前方煤体应力集中带前移和煤体瓦斯排放效果，探讨了钻孔孔径、抽放时间、抽放负压对抽放瓦斯效果的影响，确定了谢一矿高突煤层B11煤层边掘边抽的合理抽放参数。

Study on rational gas drainage parameters for joint excavation and gas drainage in Huainan high outburst seam

Base on the test of outburst prevention measures for a joint excavation and gas drainage operation in a high outburst seam B 11 seam of Xieyi Coal Mine of Huainan, the paper analyzed the mining stress concentration, gas and coal mass structure affected to the coal and gas outburst occurred in excavation of seam roadway. The test studied on the forward displacement of the coal mass stress concentration zone in the front of the coal mining face and the coal mass gas drainage result after the gas drainage with bore holes. The paper discussed the diameter of the bore hole, gas drainage time and negative pressure of gas drainage affected to the gas drainage results. The paper has set the rational gas drainage parameters for the excavation and gas drainage operation in high outburst seam B 11 seam of Xieyi Mine.