Influence Measurement Analysis of Air Distribution on Gas Governance in U-shaped Face

In order to explore the relationship of gas management and air distribution in N1102 face, through experimental research and analysis, we adjusted air distribution of N1102 face by using of increasing resistance, obtained gas control data by air distribution during maintenance of face, and used least square to process data fitting, obtained corresponding functional relationship, derived the most suitable amount of wind in N1102 face, provided effective basis for adjusting volume through field observation. By adjusting air distribution, the highest gas concentration decreased by 15.24 % in upper corner, gas concentration decreased by 11.76 % in backward sliding, gas concentration decreased by 1.3 % in return-air .