破碎围岩大采高回撤工作面防灭火工艺应用实践研究

Application of fire preventing and extinguishing technology in large mining height back face with broken surrounding rock

破碎围岩环境下的大采高工作面开采空间大,顶板破碎范围广,采区空漏风率大,尤其是在工作面回撤期间采空区防灭火,是实现矿井安全生产的基础。以羊场湾煤矿Y120204大采高工作面回撤为工程实例,通过采用注氮防灭火,并辅以传统的灌浆、隔离墙等措施,在大采高破碎围岩工作面采空区组织实施防灭火,并严密监控了防灭火效果。现场实践表明,大采高工作面采空区火灾情况得到良好控制,该工艺对羊场湾以及宁东矿区其他大采高工作面采空区的防灭火管理具有借鉴意义。

Under the conditions of large mining height the mining space is large, wide with broken roof, air 1 working face with the broken surrounding rock, eakage rate, especially the preventing fire in during withdrawing face, is the base of realizing safety mine production. Based on the large mining height face withdrawing in Yangchangwan Coal Mine, through the use of nitrogen fire prevention and ex- tinguishment, supplemented by traditional grouting, the wall measures, in the goaf of large mining height working face with broken surrounding rock to organize the implementation of fire prevention, and the effect of fire prevention and extinguishing are closely monitored. The field practice shows, the goaf fire in the large mining height working face could be well controlled, this process is of reference for Yangchangwan and other large mining height working face goaf fire prevention management in Ningdong mining area.