摘要
高位巷瓦斯抽采方法是解决采动卸压瓦斯涌出的有效途径。本文利用FLUENT软件进行采空区内瓦斯流动计算,通过数值分析,模拟了同煤矿区3种典型模型"U+I"、"U+Ⅱ"、"U+Ⅲ"通风方式下瓦斯治理效果。结果表明:在这些方式中的采空区瓦斯浓度变化曲线为"L"字形,靠近回风侧由于风流的作用及采动裂隙发育的原因使得瓦斯浓度比同水平的进风侧瓦斯浓度高,且越往深部,回风侧的瓦斯越高。这些为高位巷道抽采采空区卸压瓦斯的布置工艺和设计参数提供参考。
Gas extraction method in high-position tunnel is an effective way to solve pressure-relief gas emission. Goaf gas flow calculation is carried on in this paper by using FLUENT software, through numerical analysis, gas control effect is simulated under three typical model of ＂U ＋ I＂, ＂U ＋ II ＂, ＂U ＋III＂ ventilation mode in Datong mine area. The results show that the change curve of goaf gas concentration is ＂L＂ glyph in these ways, as a result of the wind effect and the mining induced fracture, the gas concentration near the return air side is higher than the gas concentration of intake air side, and the more deep, the higher gas of the return air side. These provide reference for arrangement process and design parameters of pressure relief gas in high-position tunnel.
出处
《计算机与应用化学》
CAS
2015年第8期973-976,共4页
Computers and Applied Chemistry
关键词
高抽巷
多孔介质
卸压瓦斯
FLUENT
数值模拟
high-position tunnel
porous medium
pressure-relief gas
FLUENT
numerical simulation
