摘要
为解决余吾煤矿煤层预抽钻孔封孔现有封孔方式存在的漏气及浓度低等问题,研究对比了煤矿瓦斯抽采钻孔主要封孔方式,拟采用"两堵一注"带压封孔法,封孔深度16 m,封孔压力0.2 MPa,并在试用前对封孔材料及设备进行测试,以确保井下采用的带压封孔技术成功。
In order to solve ＂Yuwu＂ presence mine predrainaging drilling plugging existing way of plugging leaks and low concentration problems, comparative study of coal mine gas drainage drilling main sealing manner,the proposed ＂two blocking a note＂ with pressure sealing method, sealing depth of 16 m, sealing pressure 0.2 MPa, and before the trial of the sealing material and equipment to be tested to ensure that the use of underground success with compression sealing technique.
出处
《煤炭技术》
CAS
北大核心
2016年第10期208-209,共2页
Coal Technology
关键词
封孔方式
带压封孔
封孔材料
sealing manner
with pressure sealing
plugging material
