Study Of 1207 Face Fire Reason Analysis And Extinguishing Technology Research In ZhongXing Mine

Spontaneous combustion of coal seam is one of the main disasters in coal mine. Zte ore in the process of 1207 mining face, the goaf CO overrun, directly affect the underground staffs life safety. By zte mine 1207 working face mining the upper 2 # 4 # coal seam of all collapse of mined-out area, and adopt to Y type ventilation along the empty left lane, soft mould retaining wall support strength is not enough, and goaf gas extraction, the layout of high drainage way, these are exacerbated by goaf air leakage, eventually leading to goaf CO concentration overrun. According to the specific situation, this article according to the ore party tube and artificial monitoring data, determine the scope of the fire, the fire prevention measures. First note solid water fire extinguishing material in the end of the 1207 left lane, and 20 m in carbon monoxide abnormal area range of nitrogen injection.1207 face after recovery, according to the artificial regulation nitrogen injection location of monitoring data, the two sets of nitrogen injection equipment all over 10# embedded hole mining 150 m in concentrated nitrogen injection line direction. Material lane closed, adjusting material lane, alley pumping inside and outside differential pressure to less than 20 high pa, at the same time reduce the goaf gas extraction CaiLiang removed at less than pouring amount. Final CO concentration gradually fell to 0, and achieved good effect.