摘要
对于采用冻结法施工的矿井,在冻结壁解冻后,冻结孔的管壁环形空间将形成上下串通的导水通道,导致井筒水量增大,基于此,文章分析了矿井水文地质条件,得出了导致矿井涌水量增加的原因,采用壁后深孔注浆技术对井筒实施封水加固,并对壁后深孔注浆技术参数进行了设计,现场应用结果表明,该方法堵水加固效果较好,达到预期效果,为井筒注浆堵水技术积累了经验。
As for a mine shaft constructed with a freezing shaft sinking, after a thawing of the freezing shaft wall, there would be up and down water flow channels formed in the annular space of the pipe wall in the freezing borehole and the water flow channel caused the water inflow highly increased in the mine shaft. Based on the circumstances, the paper analyzed the hydrogeological condition of the mine shaft and obtained the causes of the water inflow increased in the mine shaft. A backfill grouting technology with a deep borehole was applied to the water sealing and reinforcement and a design was conducted on the technical parameters of the backfill grouting. The site application results showed that the water sealing and reinforcement effect of the method was good, reached the predicted effect and accumulated the experiences on the backfill grouting and water sealing technology of the mine shaft.
出处
《煤炭工程》
北大核心
2014年第5期33-35,共3页
Coal Engineering
关键词
冻结法
井筒淋水
壁后注浆
深孔注浆
注浆压力
freezing method
raining in mine shaft
backfill grouting
grouting with deep borehole
grouting pressure
