论文部分内容阅读
随着采掘深度的延伸,一缘煤业由高瓦斯矿井升级为煤与瓦斯突出矿井。针对一缘煤业15#煤层的瓦斯赋存规律和采掘情况,制定了一套科学合理、切实可行的区域防突措施实施方案,该方案提出3个阶段的区域防突措施:第1阶段的区域防突措施主要采用顺层钻孔预抽煤巷条带、顺层钻孔预抽区段煤层瓦斯的方法;第2阶段为通过掘顶底板岩巷预抽煤层瓦斯,主要采用穿层钻孔预抽区段煤层瓦斯、穿层钻孔预抽回采区域煤层瓦斯的方法;第3阶段区域防突措施为开采保护层或在开采保护层前提下将预抽煤层瓦斯作为辅助手段结合使用。
With the deepening of the digging, Yiguang Coal Mine has been upgraded from a high-gas mine to a coal and gas outburst mine. Aiming at the gas occurrence law and excavation in No.13 Coal Seam of Yiyuan Coal Mine, a set of scientific, reasonable and practicable implementation plan of regional outburst prevention measures was formulated. The plan proposed three stages of outbreak prevention measures: the first stage Preventive measures in the area mainly adopt the method of pre-pumping coal roadway along the layer of pre-pumping, the method of pre-pumping section coal seam in the pre-pumping section; the second stage is the method of pre-pumping coal seam through rock roadway with bottom digging, Pre-pumping section of coal seam gas, drilling through the layer pre-drainage coal seam gas recovery method; the third phase zone outburst measures for the mining protective layer or mining protective layer under the premise of pre-pumping coal seam gas as an adjunct to use.