Abstract:
Aimed at the prevention and control problem of low oxygen in the return airway corner of 22613 working face in Daliuta Coal Mine, starting from the sources of low oxygen gas, the emission of low oxygen gas, the change of atmospheric pressure, the reasons of low hydrogen concentration in return airway corner are analyzed. By taking integrated control technique measures such as sealing air leakage of mined out areas, reducing the air pressure of neighboring mined out areas, installation of local fans and strengthening the monitoring to control the oxygen concentration at normal levels and guarantee mine safe and efficient production.