东荣三矿粉煤灰复合胶体防灭火技术应用与实践

Application of Composite Fly Ash Gel to Extinguish Fire in Dongrong No. 3 Coalmine

双鸭山东荣三矿2 0 0 3年发生火灾,开始应用注水、注惰、注灭火剂等方法,均未控制住火势。后来,通过该矿现有的灌浆系统,形成复合胶体管网式防灭火系统,利用该系统向火区周围密闭墙内大量压注粉煤灰复合胶体,堵塞了向火区漏风的通道,扑灭了大范围火源。接着启开火区下部的运输上山,从运输上山向火区打钻,由钻孔直接向火区注复合胶体,彻底扑灭了火灾,保障了矿井安全生产。实践表明,复合胶体管网式防灭火技术是一种快速高效的防灭火技术,适应大面积煤层火灾的防治要求。

A fire broke out in Dongrong No.3 coalmine in 2003. Fire-fighting techniques by Filling inert gas and injecting other fire-fighting agents were employed but failed to prevent the fire from spreading. Then a new technique was taken to extinguish the fire by making use of the existing slurry injecting system to inject composite fly ash gel into the fire zone. Large amount of composite fly ash gel is injected into sealing walls around the fire zone to block air leaking passages and large area of fire is extinguished. After that, the sealing wall in the transportation laneway under the fire zone is opened and bores are drilled from the laneway into fire zone. Composite gel is then injected through the bores into fire zone to extinguish the fire completely. It proved that injecting composite fly ash gel through pipeline network to the fire zone is a rapid and efficient fire-extinguishing technique and applicable to extinguish large area coal seam fire.