摘要
以斜沟矿15203工作面千米钻机长钻孔瓦斯抽采技术为例,分析了钻孔负压、钻孔长度与瓦斯抽采量的关系,发现千米钻孔中瓦斯抽采量随钻孔负压变化符合二次函数关系,而瓦斯抽采量、瓦斯浓度随时间的增加逐渐衰减,百米钻孔抽采量随时间变化符合负指数变化规律,并确定了钻孔合理抽采负压。
Through the application of gas drainage technology in the plume kilometer borehole of working face drilling rig,the relationship between borehole negative pressure,borehole length and gas drainage is analyzed.It is found that the gas drainage quantity in kilometer borehole conforms to the quadratic function relation with the change of borehole negative pressure,while the gas drainage quantity and gas concentration gradually decay with the increase of time.The extraction capacity of 100 borehole extraction with time accords with the law of negative index,and the reasonable extraction negative pressure of borehole is determined.
作者
牛嘉野军
Niujia Yejun(Shanxi Xishan Jincheng Construction Co.,Ltd.,Taiyuan Shanxi 030053)
出处
《机械管理开发》
2021年第1期149-151,249,共4页
Mechanical Management and Development
关键词
煤矿
千米钻孔
瓦斯抽采
coal mine
kilometer drilling
gas drainage
