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阳泉四矿是近距离多煤层联合开采、年产煤250万吨的大型矿井.由于矿井开采时间长,留有较大面积的采空区,且瓦斯较大.我们在8323工作面生产过程中采用已采区抽放瓦斯的方法,保证该工作面的安全生产,收到了明显效果.一、8323工作面概况8323工作面是我矿丈八煤32采区的第一个回采工作面,井下位置为轨道下山北侧,工作面四周均未采,工作面采长164米,走向790米,分两层回采,上层储量464797吨.上部六尺煤已采,四尺煤为一矿永红井121、119、117、201工作面的采空区,层间距40～50米,巷道布置及层间关系如图1所示.上覆岩层厚度北厚南薄,变化范围220～400米.
Yangquan four coal mine is a joint project of multi-seam coal mining in near distance with an annual output of 2.5 million tons of coal. Due to the long time of mine exploitation, a large area of goaf is left with a large gas volume. In the production of 8323 face Adopting the method of draining gas in the mining area has been adopted to ensure the safe production of the working face and has received obvious effects.About 8323 working face 8323 working face is the first mining working face in the 32 mining area of Mine Mine 8, The location is on the north side of the downhill orbit and the working face is not harvested for four weeks. The working face is 164 meters long and 790 meters long and is recovered in two levels with an upper reserve of 464,797 tons. Well 121,119,117,201 Face of the goaf, layer spacing of 40 to 50 meters, the roadway layout and the relationship between the layers shown in Figure 1. The thickness of the overlying strata north and south thin, ranging from 220 to 400 meters.