【摘要】 针对矿井反风期间井下通风状况及瓦斯涌出规律发生了较大的变化,通过对反风演习时瓦斯涌出状况的研究,进一步掌握了反风期间瓦斯的涌出规律。研究表明:矿井反风期间矿井瓦斯的绝对涌出量低于反风前矿井瓦斯的绝对涌出量,回采工作面瓦斯浓度低于反风前瓦斯浓度,矿井反风后矿井总回风道(主井底)的瓦斯浓度低于反风前总回风道的正常瓦斯浓度。这对实际生产中瓦斯控制有着重要的指导意义。更多还原

【Abstract】 Aiming at the obvious change of the wind and the rule of gas effusing in the mine in the air reversing, according to the investigation of gas effusing in air reversing in the years, the rule of gas effusing is mastered fartuer in air reversing, according to the research: the absolute gas quantity is less than the gear, consistency of the gas at the working face is less .chrome of the chief return wind path(the chief bottom of the mine) is less than normal. There is important instructional significance in the practical production.更多还原