底板超短导硐快速揭煤技术研究

Study on Rapid Uncovering Coal Technology of Floor Ultra Short Pilot Tunnel

中马村矿二1煤属于严重煤与瓦斯突出煤层,29东工作面揭煤区域煤层较厚,为了快速消除该区域突出危险性,从底板抽采巷进行水力冲孔对揭煤区域进行瓦斯治理,有效地降低了揭煤爆破时巷道内瓦斯的涌出量,同时通过超短导硐揭煤技术进行揭煤爆破,实现了工作面的安全快速揭煤。

No. Two 1 seam in Zhongma Village Mine is a serious coal and gas outburst seam. The coal seam in the coal uncovering area of 29 east work face is thick, in order to eliminate the outburst danger quickly in this area, hydraulic punching from the drainage tunnel at the bottom plate is adopted to control the gas, which effectively reduces the gas emission in the roadway during uncovering coal blasting, at the same time, the coal blasting is carried out by exposing the coal with ultra short pilot tunnel to realize the safe fast uncovering the coal.