工作面沿空留巷回采期间瓦斯治理技术研究

Research on Gas Treatment Technology During the Recovery Period of Gob-Side Entry Retaining of the Working Face

2145上块外段工作面回采期间工作面运料巷采用边采边留巷来保留工作面运料巷的沿空留巷方法,按照以往我们在工作面运料巷做高顶钻场进行边采边抽的瓦斯治理方法,运料巷无法再做高顶钻场进行瓦斯抽采,为解决该问题,我们采取在工作面联络巷和溜子道中,每隔10m在煤层中部向工作面布置本煤层钻孔,经煤体高压注水预裂后,进行本煤层瓦斯抽采。

During the recovery of the the working face of 2145 upper section,the haul lane of the working face adopts the method of mining beside roadway retained to retain the gob-side entry retaining of haul lane of the working face. According to the gas treatment method that we used in the high-top drilling field in the working face loading lane, we can no longer make the high top drilling field for gas extraction.In order to solve this problem, we adopted the layout of the coal seam drill to the working face every 10 m in the middle of the coal seam in the working face contact lane and chute road.