近距离煤层群被保护层开采瓦斯综合治理技术研究

近距离煤层群被保护层回采过程中,由于被保护层与保护层之间距离较小,保护层采空区内积聚的瓦斯通过采动影响所产生的裂隙大量涌入被保护层工作面,容易造成工作面瓦斯超限.本文以新庄孜矿62113被保护层工作面回采为例,通过调节通风负压和抽采系统相结合的瓦斯治理措施,改变工作面及邻近层瓦斯流向,抑制瓦斯涌向回采工作面,从而增加瓦斯抽采量,降低回风瓦斯浓度,有效的保证了工作面的安全回采.

Study on the technique of gas control during mining protected layer in short-distance coal seams

A large number of gas in the protective layer gob pour into the protected layer working face when mining the protected layer in the short-distance coal seams,which makes gas control more difficult and the gas concentration over the limit easily,because of the short distance between the protective and the protected layer.The paper takes 62113 protected working face in the short-distance coal seams as an example.The technique of combining ventilation adjusting with effective drainage system,changing the gas f...