大柳塔矿12612-2综采工作面采空区氮气涌出原因分析及控制技术研究

通过对大柳塔矿12612-2工作面氮气涌出、大气压变化情况的观测与分析,指出大气压变化是引起综采工作面氮气涌出导致氧气的体积分数偏低的主要原因,提出了安装专用抽排风机、增阻调压、密闭堵漏等技术措施,在一定程度上解决了氧气的体积分数低对生产构成严重威胁的问题。

Analysis on the Causes of Nitrogen Out-flow in the Gob of 12612-2 Fully Mechanized Coal Face of Daliuta Mine and Control Techniques

Through the observation and analysis on the nitrogen out-flow in 12612-2 fully mechanized coal face of Daliuta Mine and change of atmospheric pressure,this paper points out that the change of atmospheric pressure is the main factor causing the nitrogen out-flow in fully mechanized coal face,which leads to lower volume fraction of oxygen,and puts forward some technical measures for solving the serious threat of lower volume fraction of oxygen on the production,such as the installation of special exhaust fans,the resistance increasing and pressure regulating,and the sealed plugging,etc.