陷落柱和采深对综采工作面瓦斯涌出的影响

Influences of Collapse Columns and Mining Depth on Gas Emission of Coal Face

随着开采深度的增加,段王煤矿矿井瓦斯涌出量增大;井田内岩溶陷落柱发育,陷落柱附近采掘工作面时常出现瓦斯涌出异常现象.矿井由低瓦斯矿井转化为高瓦斯矿井。采用现场实测、理论分析方法,研究陷落柱和采深对综采工作面瓦斯涌出的影响。研究结果表明,岩溶陷落柱对采掘工作面瓦斯涌出影响明显。采面瓦斯涌出量与采深之间呈正相关关系。随着开采深度的增加,采面瓦斯涌出量增加。

With the increase of mining depth,Duanwang .coal mine gas emission quantity increased.Karst collapse columns are very developed in the minefield,and the phenomena of abnormal gas emission always occurred at the mining and driving faces around the collapse columns,then the mine became high gassy one from low gassy mine.Using field measurement and theoretical analysis methods,study the influence of collapse and mining depth on gas emission of coal face.The following conclusions can be obtained:karst collapse columns have significant influences on gas emission of the mining and driving faces.Gas emission quantity of coal face is directly correlated with mining depth.With the increase of mining depth,gas emission quantities at coal face'increase.