摘要
杜儿坪矿62711工作面采用“高位钻孔+采空区埋管”立体联合抽采的方式治理采空区,瓦斯抽采负压必然导致采空区漏风增加,而62711工作面上覆1#煤层的自燃倾向性等级为Ⅱ级,属自燃煤层,采空区遗煤有自燃危险性。通过采用均压+气体监测+注氮防灭火系统,杜绝了采空区遗煤自燃事故,为矿井的安全生产提供了前提。
The 62711 working face of Duerping Coal Mine adopts"high-level drilling+goaf pipe burying"three-dimensional combined extraction to control the goaf.The negative pressure of gas extraction will inevitably lead to increased air leakage in the goaf.The overlying 1#coal seam of 62711 working face has a spontaneous combustion propensity grade ofⅡ,which belongs to the spontaneous combustion coal seam.The coal left in the goaf has the risk of spontaneous combustion.By adopting a pressure equalization+gas monitoring+nitrogen injection fire extinguishing system,the spontaneous combustion of the coal in the goaf was eliminated,which provided prerequisites for safe production of the mine.
作者
代雪锋
DAI Xuefeng(Duerping Coal Mine,Xishan Coal Electricity Group,Shanxi Coking Coal Group,Taiyuan 030000,Shanxi,China)
出处
《能源与节能》
2020年第10期150-151,共2页
Energy and Energy Conservation
关键词
Y型通风
注氮
监测监控
均压
Y-type ventilation
nitrogen injection
monitoring and control
pressure equalization
