补连塔煤矿22305工作面受周边火区影响分析

Analysis for 22305 Working Face of Bulianta Coal Mine Affected by Surrounding Fire District

针对补连塔煤矿22305工作面上覆12煤采空区已出现火区的现状,分析了22305工作面受周边火区的影响程度。通过分析22305工作面与上覆采空区火区的位置关系,计算采空区的冒落带和裂隙带高度,得出22305工作面不会受到上覆采空区火区明火的影响,但上覆火区的有毒有害气体会侵入22305工作面造成危害,地面可能会出现裂缝,增大22305采空区受供风氧化出现自然发火的危险,必须加大监测力度,继续对12煤采空区火区进行治理。

Aimed at the fire district status of overlying 12 coal gob in 22305 working face of Bulianta Coal Mine, the impact was ana- lyzed for 22305 working face affected by surrounding fire district. The heights of caving zone and fractured zone were calculated by ana- lyzing the position relationship between 22305 working face and fire districts of overlying 12 coal gob. It was obtained that the open fire in the fire district of overlying 12 coal gob would not affect 22305 working face, but the toxic and harmful gas of overlying fire district could invade into 22305 working face and cause harm. The fracture appeared from ground would enlarge the spontaneous combustion danger of 22305 gob because of air supply oxidative. Therefore, the monitoring efforts must be increased, and the fire district of 12 coal gob area must be controlled continually.