忻州窑矿采空区瓦斯运移规律研究

Study on goaf gas migration law in Xinzhouyao Mine

采用理论分析和数值模拟相结合的方式,对采空区瓦斯运移规律进行深入研究。首先通过理论分析确定了渗透率和质量源两个重要参数,然后采用FLUENT模拟软件对开采之后,采空区的瓦斯分布规律进行模拟研究。煤层的透气性在下保护层开采后产生了明显的变化。透气性的增加将使得瓦斯抽采更加容易,煤层开采更加安全。

Goaf gas migration law was studied by combined theory analysis and numerical simulation in this paper. Two parameters permeability and quality source were settled by theory analysis, FLUENT model software was used to simulate goaf gas distribution law after mining. Air permeability of protective layer changed obviously after mining, the increase of air permeability makes gas extraction more easier and mining safer.