摘要
超化煤矿"三软"厚煤层综采放顶煤工作面生产期间瓦斯绝对涌出量不断增加,在高抽巷不能使用的情况下回风流瓦斯经常接近临界值,严重影响综合机械化采煤效能的发挥。通过对瓦斯来源的分析,采用上尾巷埋管抽放技术很好地解决了上隅角瓦斯超限问题。
The quantity of gas absolute gashing is continuously increasing during the period of production at fully mechanized coal face with ＂three soft＂ thick coal seam of Chaohua Coal Mine, in a state of high gas drainage - out drift could not uses usually, the returning gas nearly reaches to the critical value, so, it is seriously influences the efficience of fully mechanized coal face mining. By the analysis of the gas source, adopting burried pipes at toproad solves the problem of top corner gas over limited.
出处
《煤炭技术》
CAS
2008年第2期99-101,共3页
Coal Technology
关键词
“三软”厚煤层
上尾巷
抽放技术
three soft thick coal sem
topend road
technique of drainage
