浅谈综放工作面仰采时上隅角瓦斯治理

Preliminary discussion on the upper corner gas control with upward-mining in the fully-mechanized caving face

针对综放工作面仰采时易导致工作面及上隅角瓦斯含量增加的情况,分析了造成上隅角瓦斯含量增加的4个原因。结合蒋家河煤矿综放工作面仰采的实践,总结出了上隅角尾巷内抽放、调节风量、上隅角和下隅角封堵、减少采空区注氮量等控制上隅角瓦斯浓度的方法,取得了较好效果。

Based on the condition that upward-mining tend to cause gas content increasing of top corner in the fully-mechanized caving face,the four reasons for the increasing has been analyzed. Combined with the practice of the upward-mining in the Jiangjiahe fully-mechanized caving face,this paper summarized the following methods to control the concentration of the top corner gas,such as drainage of top corner tail roadway air quantity regulating,upper and down corner plugging and reduction of nitrogen injection and so on,which has achieved good results.