In order to solve the problems about the large of gas emission quantity and the high of gas concentration in the upper corner in Huang Yanghui coal mine,arrange highly-located drainage roadway in 15109 coalface,through the method of theoretical analysis and numerical simulation to study the height range of "two belts". Research shows that the maximum height of caving zone about 15m, the height range of fissure zone about 15 to 60m. Analysis the gas concentration, drainage quantity in different vertical interval about highly-located drainage roadway and in return current about coalface,showing that when the vertical distance between highly-located drainage roadway and 15* coal seam is 50 to 55m,gas drainage efficiency is about 83%, gas drainage concentration is about 42%, gas extraction pure quantity is about 60m3/min, gas concentration is reduced to 0. 1% to 0. 5% in return current,It has helped to safety and efficient production.%为了解决黄岩汇煤矿工作面瓦斯涌出量大,上隅角瓦斯浓度高的难题,对15109工作面高抽巷抽采瓦斯技术进行研究.通过数值模拟和理论分析对上覆岩层“两带”的高度范围进行研究,研究表明:工作面上方冒落带的最大高度约15m,裂隙带的高度范围约为15～60m.并实测不同垂距的高抽巷抽采瓦斯浓度、抽采量以及高抽巷抽采瓦斯期间工作面回风流瓦斯的抽采量和浓度数据进行分析,综合分析得出:高抽巷距15 #煤层顶板最佳垂距为50～55m时,高抽巷抽采瓦斯量占工作面抽采量的83％,抽采浓度约42％,瓦斯抽采纯量约60 m3/min,使工作面回风流瓦斯浓度降低到0.1％～0.5％,有利于工作面的安全高效生产.
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