摘要
运用Fluent模拟不同渗透率下高位钻孔抽采采空区的瓦斯分布,研究分析此区域内3种不同渗透率条件下的瓦斯分布。结果表明:从得到瓦斯爆炸极限的范围分布来看,在煤层垂直方向上由上到下,瓦斯浓度等值线浓度增加,并且由于高位钻孔的影响,在靠近工作面附近,回风侧高瓦斯浓度等值线下降。
By using Fluent software numerical simulations with high-position extracting the gas under different gas permeability distribution, research and analysis three permeability under different conditions distribution. The results show that it gets the range distribution of the gas explosion limit;From top to bottom on the coal in vertical direction, the gas concentration contours is increasing,and the return air side of the high gas concentration contours is falling near the working face under the impact of high leve borehole.
出处
《煤炭技术》
CAS
北大核心
2016年第2期197-199,共3页
Coal Technology
关键词
高位钻孔
渗透率
瓦斯分布
high leve borehole
permeability
gas distribution
