山西宏远煤业煤矿井下防灭火技术分析

Analysis of Underground Fire Prevention Technology in Coal Mine of Shanxi Hongyuan Coal Industry Co., Ltd.

针对山西宏远煤业的煤层易自燃问题,采用了地面束管监测、黄泥灌浆、注氮技术来防灭火。现场监测结果表明,采用防灭火技术后,在3个工作面回采期间,上隅角和工作面回风流瓦斯浓度未超限,也未出现自然发火标志性气体。

In view of the problem of easy spontaneous combustion of coal seams in Hongyuan Coal Industry Co., Ltd. of Shanxi,ground beam tube monitoring, yellow mud grouting and nitrogen injection technology are used to prevent fires. The on-site monitoring results showed that after the fire prevention technology was used, during the recovery of the three working faces, the gas density from the upper corner and the working face flow was not exceeded, and there was no natural gas signature gas.