关键词: 低瓦斯矿井, 综采工作面, 瓦斯抽放, 抽放硐室, 抽放工艺

Abstract: In order to solve the problem of gas overrun in the upper corner of the fully mechanized mining face of low gas mines in the northern area of Shendong mining area, a comprehensive treatment technology focusing on gas drainage is adopted, and the drainage processes of upper corner intubation drainage, goaf closed intubation drainage and goaf borehole buried pipe drainage are adopted, together with corresponding auxiliary control technologies, At the same time, the design of the gas drainage chamber and the layout of the pipeline are optimized and improved. By adopting the above technologies, the gas concentration in the return air corner is significantly reduced during the mining of the working face, and the gas extraction rate of the working face reaches 45 ~ 64%, which solves the problem of local accumulation and overrun of the gas in the return air corner during the mining of the working face, This paper introduces the gas control technology of fully mechanized mining face in Shendong mining area.