近距离煤层回采工作面回风隅角低氧防治研究
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摘要
为了解决近距离煤层综采工作面回风隅角氧气含量低的难题,对隅角氧气浓度低的原因进行充分分析,提出了减少采空区漏风、增大隅角风量、动力压风稀释隅角气体以及封堵地面塌陷等综合治理措施,从而使隅角氧气浓度由最低12%升到19%以上,结果表明在采取综合措施后,有效解决了回风隅角低氧的问题,能够确保综采工作面安全生产。
In order to solve the problem of low oxygen content in the return air corner of fully mechanized coal mining face in close distance,the reason of low oxygen concentration in the corner is fully analyzed,and it is proposed to reduce the air leakage in the goaf,increase the air volume in the corner,and reduce the dynamic pressure. Comprehensive control measures such as dilute the corner gas and block the ground collapse,so that the oxygen concentration of the corner increased from the lowest 12% to more than 19%. The results show that after taking comprehensive measures,the problem of low-oxygen in the return air corner can be effectively solved. It can ensure the safe production of fully mechanized mining face.
In order to solve the problem of low oxygen content in the return air corner of fully mechanized coal mining face in close distance,the reason of low oxygen concentration in the corner is fully analyzed,and it is proposed to reduce the air leakage in the goaf,increase the air volume in the corner,and reduce the dynamic pressure. Comprehensive control measures such as dilute the corner gas and block the ground collapse,so that the oxygen concentration of the corner increased from the lowest 12% to more than 19%. The results show that after taking comprehensive measures,the problem of low-oxygen in the return air corner can be effectively solved. It can ensure the safe production of fully mechanized mining face.
引文
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[3]朱永强.综采工作面回风隅角瓦斯治理实践[J].江西煤炭科技,2017(2):39-40,46.
[4]严建华.科技通风技术[M].北京:煤炭工业出版社,2005.
[5]国家煤矿安全监察局.煤矿安全规程(2016版)[M].北京:煤炭工业出版社,2005.
[6]张立国.浅埋深近距离易自燃煤层群复合采空区漏风规律研究[J].煤矿安全,2018(S1):5-8,13.
[7]于不凡.煤矿瓦斯灾害防治及利用技术手册[M].北京:煤炭工业出版社,2000.
[8]史惠昌.通风与安全[M].北京:煤炭工业出版社,1989.
[9]王永安.矿井通风[M].北京:煤炭工业出版社,2005.
[10]杨俊哲.大柳塔煤矿12612工作面回风隅角氧气浓度异常原因分析与治理措施[J].煤矿安全,2009(7):94-96.