摘要
针对多富水层和多流砂层的复杂水文地质条件,提出大断面立井综合防治水技术:表土层和风化基岩段采用冻结法施工,富水层段采用复合井壁和工作面预注浆技术,最后对井筒集中出水区域壁后、壁间注浆和全井筒分区域整体注浆。实践表明,取得了较好的封水效果。
According to the complex hydrogeology conditions with many rich water seams,and many flow sand seams,comprehensive water control of large section vertical shaft is putted forward：the first is by using freezing construction method in surface soil seam and weathering bedrock seam,the second is by using composite shaft lining and face pre-grouting to control water,the last is by wall back and intramural grouting and whole shaft grouting.The practice shows that it obtained a good sealing effect of water.
出处
《中国煤炭》
北大核心
2011年第2期56-58,共3页
China Coal
关键词
大断面立井
复杂水文地质
井筒施工
冻结法
复合井壁
工作面预注浆
large section vertical shaft
complex hydrogeology conditions
shaft sinking and drifting
freezing method
composite shaft lining
face pre-grouting
