高位定向长钻孔瓦斯抽采技术在国投新集的应用研究

Application Research of Gas Drainage Technology in Directional High Level Long Borehole in Guotou Xinji

通过对比分析不同层位定向钻孔的瓦斯抽放效果,获得了布置定向钻孔的最佳层位。对比分析高位定向长钻孔和顶板穿层钻孔的瓦斯抽放效果,证明了前者的抽放效率更高。工作面回采时,高位定向长钻孔对降低采空区和上隅角瓦斯发挥了一定的作用。

By comparing and analyzing the effect of gas drainage in different horizon directional drilling, the best layer of directional drilling is obtained. It is proved that the pumping efficiency of the former is higher according to comparative analysis of gas drainage effect that high directional drilling and long roof borehole. The working face mining, high directional drilling has played a certain role in reducing the goal and the upper comer gas.