下向抽放钻孔排水装置应用研究

Application and Research of Drainage Device for Downward Drilling

在煤与瓦斯突出矿井中,石门揭穿突出煤层时发生的突出具有突出强度大、涌出瓦斯量多、抛出煤量大、突出瓦斯波及范围广、危害性大等特点,是矿井安全技术的重点和采掘部署的瓶颈工程。因此,为了防治揭煤过程中的煤与瓦斯突出,采取了穿层抽放钻孔防突措施。为了提高抽放效果,采取下向抽放钻孔排水装置,取得了较好的效果。

In the coal and gas outburst mine, shimen prominent outburst occurred when the prominent coal seam with a prominent in- tensity, the amount of gas emission, the amount of coal thrown out, highlight the wide range of gas and wide, hazardous and so on. This is the focus of mine safety technology and the deployment of the bottleneck of mining projects. Therefore, in order to prevent and control coal and gas outburst in the process of coal uncovering, measures are taken to prevent outburst of borehole drilling. In addition, in order to improve the drainage effect, and to take down the drainage hole drainage device, and achieved good results.