关键词: 高位定向钻孔, 上隅角, 瓦斯治理, 布孔层位

Abstract: In order to effectively solve the problem of gas control in the corner of the fully mechanized caving face, the gas drainage technology of high-oriented directional long borehole is adopted. To study the correlation characteristics between high-level directional drilling and gas drainage,fully mechanized caving face of Wangjialing mine is used as the tracking object, and the influence of different offsets and intervals on the concentration of extraction and the amount of pure extraction is analyzed from the horizontal and vertical intervals,Then the best layer of pores in the same zone and the wrong zone is obtained. Through the on-site application of the high-grade directional drilling test in Wangjialing Mine, the maximum concentration of gas at the corner of the production work surface is reduced to 0.64%, achieving safe and efficient production of the fully mechanized caving face.