高瓦斯煤层群水平井立体抽采模型探讨

Discussion on Three-dimensional Drainage Model of Horizontal Well in High Gas Coal Seam Group

沙曲煤矿24307多分支水平井试验成功后,面对高瓦斯煤层群对回采工作面形成的多源性瓦斯危害,提出上邻近层和下邻近层瓦斯综合治理,利用地面多分支水平井的优势结合矿井的生产衔接,采用多分支水平对接钻孔进行瓦斯治理,实现本煤层和上下邻近层综合瓦斯治理,并且防止巷道掘进期间煤与瓦斯突出,降低瓦斯涌出量,实现工作面回采期间采空区瓦斯的有效治理。

Multi 24307 branch horizontal well test successed. In the face of high gas coal group muhiple sources of gas hazard in coal mining. Put forward comprehensive gas control include upper and lower layers. Utilizing the ad- vantages of muhi branch horizontal wells join the production of mine. Design of multi branch horizontal well for mine gas control. Realization of comprehensive gas control include upper itself and lower layers. And realize the effective control of gas in goal during mining.