高河煤矿综放工作面瓦斯涌出分布规律研究

Distribution law of gas emission in fully mechanized top coal caving face

为采取有效、合理的瓦斯治理技术解决工作面瓦斯超限问题,对工作面瓦斯涌出分布规律通过采取建立观测站的方式进行统计分析,得出：工作面瓦斯浓度在空间上分布是不均衡的;上隅角瓦斯浓度随着产量的增加呈上升趋势,随着配风量的增加而呈上升趋势,配风量到一定值后上隅角瓦斯浓度急剧下降;在来压期间,综放面瓦斯浓度由0.42%~0.56%增加到0.64%~0.9%,瓦斯涌出量增加了50%以上的结论。

To take effective and reasonable gas control technology to solve the problem of gas overrun, analyzed the gas emission distribution by setting up monitoring stations of the way the result show that the gas concentration distribution is not balanced in space; the gas concentration distribution increased with the yield and the air distribution in the upper corner, When the air distribution reach a certain value the gas concentration dropped sharply; during the period of the pressure in fully mechanized caving face,the gas concentration increased from 0.42%~0.56% to 0.64%~0.9%, the gas emission quantity increased by more than 50% of the conclusion.