回采工作面长钻孔瓦斯抽放技术探索

摘要

本文从回采工作面瓦斯含量测定以及气体渗流模型确立两个方面入手，分析了回采工作面长钻孔瓦斯抽放的基本前提，然后对钻孔直径和机具的确定进行了深入探讨，最后对回采工作面上隅角应用钻孔瓦斯抽放技术做了实例分析，希望可以对采煤工作面瓦斯抽放作业提供一定的参考和帮助。%The basic premise of the long borehole gas drainage in working face were analyzed from two aspects of the gas content determination in the coal mining face and the gas percolation model establishment in this paper, and the hole diameter and the equipment are discussed, at the end of the application of borehole gas drainage technology the upper corner has made the example analysis, which hope to provide certain reference and help for the mining coal working surface gas drainage operation.