二_1煤层瓦斯赋存规律与涌出预测研究

Study on Laws of Gas Occurrence and Forecast of Gas Emission Quantity of Ⅱ_1 Coal Seam

通过对阳城二矿二1煤层瓦斯含量和瓦斯涌出量进行分析,得出了瓦斯含量分布规律及瓦斯含量与瓦斯涌出量之间的近似关系,并分别对掘进和采煤期间的瓦斯涌出量进行预测,绘制出了相应的瓦斯涌出量分布图。研究结果显示,在东风井,瓦斯含量和瓦斯涌出量最高,且随采深变化很明显;掘进面相对瓦斯涌出量和瓦斯含量之比要远高于回采工作面。

Gas content and gas emission quantity of Ⅱ 1 coal seam were analyzed in Yangcheng No. 2 Coal Mine,and the distributionrule of gas content and the approximate relation between gas content and gas emission quantity were educed,the gas emission quantity was predicted in the duration of driving and mining, corresponding distribution map of gas emission quantity was protracted. The re-search result shows that the gas content and the gas emission quantity are the highest in the eastern air shaft, and the change along with depth is very clear;the ratio of gas emission quantity and gas content in the driving face is higher than in the working face.