淮南某矿1111煤层是高温、高压、高瓦斯,具有突出危险性的深井煤层。为保证回采过程中的安全,充分利用沿空留巷Y形通风条件,结合顺层钻孔、地面钻孔结合高位钻场顶板走向钻孔、倾向穿层钻孔抽采瓦斯及沿空留巷埋管抽采瓦斯,解决工作面瓦斯超限问题。 1111 coal seam of a mine in Huainan is a high-temperature, high-pressure, high-gas coal seam with prominent danger. In order to ensure the safety in the process of mining, taking advantage of the Y-shaped ventilation conditions for gob-side entry retaining, drilling along the ground, ground drilling combined with roof drilling of high drilling field, Buried pipe pumping gas to solve the problem of gas over the face.