深井易自燃煤层超长工作面回撤期间综合防灭火技术

Comprehensive fire prevention technology of deep and easily spontaneous combustion coal seam during working face retracement

深井高地压超长综采工作面回撤时间长导致防灭火难度大,在进行防火预测预报的基础上,超前预埋各类防火措施管路,采取接替灌浆、注氮、注液态CO2、喷注瑞米材料充填等综合防灭火措施,同时对重点高温氧化隐患区域采取打钻定点注浆、捣孔注凝胶等措施,有效抑制了采空区内残煤氧化,保障了工作面安全收作。

The longer retracement time of super long fully mechanized face the long in deep high pressure, which lead to the dififculty of ifre prevention , based on ifre prediction, buried various types pipeline for ifre prevention measures in advance, took iflling, nitrogen injection, injection of liquid CO2, injection Remy material iflling comprehensive ifre preventing and extinguishing ifre measures, and drilling grouting, tamping hole gel injection measures in ifxed-point of the high temperature oxidation hidden area, effectively inhibited the gob of residual coal oxidation, and guaranteed the safe working surface.