摘要
为了确保祁东煤矿7131工作面的回采安全,需对工作面风巷32#放水孔进行封堵,该孔因质量问题无法利用原有套管进行注浆封堵,采用孔内下套管,注浆及注入骨料等办法,成功地封堵了该破损放水孔。
To ensure the safety of Qidong Coal Mine 7131 working face, we need to plug 32^# drainge hole ar airway. However, the hole is unable to use the original casing to grout and plug due to the quality problems. Using hole casing, grouting and other methods to in- ject aggregate, we successfully plug the damaged drainage hole.
出处
《煤矿安全》
CAS
北大核心
2014年第11期116-117,121,共3页
Safety in Coal Mines
关键词
放水孔
注浆
封堵
第四含水层
套管
drainage hole
grouting
plugging
the fourth aquifer
casing
