摘要
为了考察黄白茨煤矿021205工作面下向钻孔抽采效果,从钻孔施工工艺、封孔工艺以及钻孔长度等方面考虑,选取021203工作面里段施工的上向钻孔抽采瓦斯效果作为参考。本文通过测定、收集、整理、分析021205工作面和021203工作面的瓦斯抽采数据,并得出021205工作面下向钻孔比021203工作面上向钻孔瓦斯抽采浓度衰减快,且衰减幅度大,021203工作面上向钻孔抽采效果优于021205工作面下向钻孔,并得出下向和上向钻孔瓦斯抽采浓度、流量等数据随时间变化的规律。
In order to investigate the downward drilling drainage effect of 021205 working face in Huangbaici Mine,considering from the aspects of drilling construction technology,hole sealing technology and drilling length,the upward drilling drainage effect of inner section construction in 021203 working face is selected as a reference.Through the measurement,collection,arrangement and analysis of the gas drainage data of working faces of 021205 and 021203,it is concluded that the gas drainage concentration of downward drilling in working face 021205 decays faster than that of upward drilling in working face 021203,and the decaying range is large.The effect of upward drilling in 021203 working face is better than that of downward drilling in 021205 working face.The change rule of gas drainage concentration in downward and highward drilling and flow rate with time is obtained.
作者
张帅
ZHANG Shuai(Wuhai Energy Co.,Ltd.,CHN Energy,Wuhai,Inner Mongolia 016000)
出处
《能源科技》
2020年第2期23-25,共3页
Energy Science and Technology
关键词
瓦斯抽采工作面
下向钻孔
抽采效果
Gas drainage working face
Downward drilling
Drainage effect
