摘要
矿压活动会引起钻孔套管断裂及钻场周围底板鼓起出水。根据现场情况分析,采取先扩孔提取断裂套管,再下放小直径套管,然后采用落砂封堵裂隙点、砂浆混合注浆的方法,成功治理了底板鼓起出水。
Mine pressure activities will lead to driling casing fracture and yielding water around the floor of drilling field. According to the situation analysis, the processing program of extracting the fracture casing by reaming firstly and letting down the small diameter casing, then using the method of plugging fracture points by ramoff and mixed grouting by mortar is studied, which successfully control the yielding water of floor.
出处
《煤矿安全》
CAS
北大核心
2012年第8期65-67,共3页
Safety in Coal Mines
关键词
钻孔施工
套管断裂
扩孔
注浆
落砂封堵
drilling construction
casing fracture
reaming
grouting
plugging by ramoff
