近距离易自燃煤层群开采防灭火技术
发布时间：2018-11-25 21:07
【摘要】：为防止近距离易自燃煤层群开采时发生煤自燃事故,在盐井一矿K_(12)、K_(14)工作面构建了回采区域综合均压通风系统。通过采取控制采空区漏风、压差动态调节和采空区注氮等措施,对煤层进行了防灭火治理,并对防治效果进行了分析。结果表明:采空区的温度由采取措施之前的26℃降到24℃,O_2浓度由约20%降到11%,CO浓度由110×10~(-6)降到50×10~(-6)以下,CO_2浓度保持在0.5%左右,煤层各项自然发火敏感指标均明显下降,达到了防止采空区煤自然发火的目的。
[Abstract]:In order to prevent coal spontaneous combustion from occurring in close distance spontaneous combustion coal seam group, a comprehensive uniform pressure ventilation system in mining area is constructed at K12 and K14 face of No. 1 Salt Mine. Through the measures of controlling air leakage in goaf, dynamic adjustment of pressure difference and nitrogen injection in goaf, the fire prevention and extinguishing treatment of coal seam is carried out, and the prevention effect is analyzed. The results showed that the temperature of goaf was reduced from 26 鈩，
本文编号：2357373
[Abstract]:In order to prevent coal spontaneous combustion from occurring in close distance spontaneous combustion coal seam group, a comprehensive uniform pressure ventilation system in mining area is constructed at K12 and K14 face of No. 1 Salt Mine. Through the measures of controlling air leakage in goaf, dynamic adjustment of pressure difference and nitrogen injection in goaf, the fire prevention and extinguishing treatment of coal seam is carried out, and the prevention effect is analyzed. The results showed that the temperature of goaf was reduced from 26 鈩，
本文编号：2357373
本文链接：https://www.wllwen.com/kejilunwen/anquangongcheng/2357373.html
