万峰矿综掘工作面瓦斯抽采技术研究

Study on gas drainage technology of comprehensive tunneling working face in Wanfeng coal mine

以万峰矿1211综掘工作面为例,针对矿井地质条件及煤层瓦斯赋存状况,对工作面瓦斯抽采方法及参数进行设计,掘进工作面采用边掘边抽、本煤层预抽与邻近层抽采相结合的瓦斯抽采技术控制瓦斯浓度,取得了良好的效果,在工作面掘进期间,掘进期间回风流瓦斯浓度控制在合理范围内,确保了掘进工作面安全掘进。

Taking 1211 comprehensive tunneling working face in Wanfeng coal mine as an example,according to the mine geological conditions and the occurrence of coal seam gas,the gas drainage method and parameters are designed,the driving face adopts the gas drainage technology of driving while draining,combining the pre drainage of the coal seam and the adjacent seam drainage to control the gas concentration,good results have been achieved,during the driving period of the working face,the gas concentration of the return air flow is controlled in a reasonable range,which ensures the safety of the driving face.