摘要
采煤工作面上隅角靠近煤壁和采空区一侧,风流速度低,局部处于涡流状态,致使采空区瓦斯涌出难以进入到主风流中,在上隅角处形成涡流区,使采煤工作面上隅角瓦斯超限,严重影响采煤工作面安全生产。采用设置风障、采空区插管抽放及高位钻孔抽放等综合治理措施解决这一问题,收到了良好效果。
The air velocity at the upper comer angle close to the gob side and the wall of the working face is low or even in a vortex state in a local place, which might cause the gas emitted out from the gob to difficultly enter the main airflow, a vortex area to be formed at the upper comer angle of the face and the gas at the upper corner angle to excess the limit, and finally it might seriously impact on the safe production of the working face. Some comprehensive control measures such as setting air brattice, gob gas drainage by tubes, gas drainage by high-level boreholes and so on were used to solve this problem, and good results were achieved.
出处
《矿业安全与环保》
北大核心
2013年第1期89-91,94,共4页
Mining Safety & Environmental Protection
关键词
工作面上隅角
瓦斯
涡流状态
综合治理
upper corner angle of working face
gas
vortex state
complex control
