深孔注浆止水帷幕技术在地铁明挖车站中的应用

Application of Deep Hole Grouting Sealing Curtain Technology for Open Cut Stations

文章对北京地铁14号线某车站在深基坑土方开挖施工中应用深孔注浆止水帷幕技术进行基坑水处理施工的实例做了介绍,包括注浆孔布置、注浆加固设计参数、质量控制、注浆止水帷幕效果等。该项技术在北京地铁基坑降水施工中首次大面积应用,并取得了成功的经验。

This paper introduces the deep foundation pit excavation construction in a station on Beijing metro line 14 by taking the deep hole grouting sealing curtain technology for pit water treatment construction as an instance, including the grouting holes layout, grouting reinforcement design parameters, quality control, grouting sealing curtain effect etc. The construction technology is used in pit dewatering in the construction of Beijing metro for the first time in a large area, and gains a successful experience.