均压通风技术治理浅埋深、大漏风火区

针对龙华煤矿浅埋深煤层工作面存在上覆房柱式采空区和废弃巷道形成的大漏风火区和火灾气体威胁等难题,设计并实施了均压防灭火技术措施,通过采用调节风窗和局部通风机联合均压的方式,均衡了大漏风火区内主要漏风通道两端的风压,使得整个大漏风火区基本处于均压状态,改变了通风系统内的压力分布,抑制了火灾气体涌入本煤层工作面,从而有效遏制了上覆煤层老窑及地表露天矿剥离引起的大规模明火燃烧对本煤层工作面回采的影响。

Pressure Equalization Ventilation Technology to Treat Shallow Buried Depth and Large Leakage Fire Zone

Aiming at the problems of overlying room-pillar mined-out areas and large wind-fire areas and fire gas threats formed by abandoned roadways in the shallow coal seam face of Longhua coal mine,designed and implemented pressure equalization and fire-fighting technical measures, and adopted adjusting wind windows. The pressure equalization method combined with local ventilators balances the wind pressure at both ends of the main air leakage passage in the large air leakage and fire area, so that the entire large air leakage and fire area is basically in a pressure equalization state, which changes the pressure distribution in the ventilation system and suppresses the fire gas Influx into the working face of the coal seam, thereby effectively curbing the impact of large-scale open fire burning caused by the stripping of the overlying coal seam old kiln and the surface open-pit mine on the working face of the coal seam.