采空区埋管抽采瓦斯治理效果研究

Study on Controlling Effects of Gas Drainage Using Buried Pipe in Goaf

根据采空区上覆岩层"O"形圈分布原理以及埋管抽采工作原理,对李雅庄煤矿224工作面影响瓦斯抽采效果的因素进行了分析,并对李雅庄煤矿埋管抽采瓦斯治理效果进行了预测;根据对抽采浓度、混合流量的分析,研究了李雅庄煤矿埋管抽采瓦斯治理效果,认为抽采钻孔是否布置在采动裂隙带内对瓦斯抽采效果有直接影响。

According to the principle of ＂O＂ ring distribution and the drainage working of buried pipe in overburden rock of gob, factors influencing gas extraction effect on 224 working face in Liyazhuang Coal Mine were analysed in this paper. The effects of gas drainage of buried pipe were also forecasted in the coal mine. In accordance with the analysis on concentration of gas extraction and mixed flow, the actual effect of gas drainage by using buried pipe was studied,and it was proposed that whether gas drainage boreholes were laid out in mining-induced fracture zone has a direct impact on the effect of gas drainage.