CAJ | 학술논문

随着矿井开采水平的延伸，煤层瓦斯含量也随之增加，工作面上隅角瓦斯浓度严重制约着矿井的安全生产，本文通过在工作面上部回风巷侧的顶板岩层裂隙带施工高位抽采钻孔，以工作面回采采动压力形成的顶板裂隙作为通道来对工作面煤壁及采空区涌出的瓦斯进行抽采，从而达到降低工作面采空区瓦斯浓度，避免工作面上隅角瓦斯超限的目的。
수착광정개채수평적연신，매층와사함량야수지증가，공작면상우각와사농도엄중제약착광정적안전생산，본문통과재공작면상부회풍항측적정판암층렬극대시공고위추채찬공，이공작면회채채동압력형성적정판렬극작위통도래대공작면매벽급채공구용출적와사진행추채，종이체도강저공작면채공구와사농도，피면공작면상우각와사초한적목적。
As underground mining extends, gas content of the coal seam also increases, high gas concentrations at the face corner seriously re-strict safety production of the coal mine. This paper, introduces the high-level pumping borehole drilling construction on the roof rock fissure zone beside the upper wind return roadway of the face, to drain the goaf gas flowing out of the face wall and gob by use of roof fissure formed by recovery mining disturbance as channel, so as to reduce the goaf gas concentration, avoid gas over-limit at the gob of the face.