摘要
冻结法虽然在城市富水地层地铁施工中适应性强、施工灵活、绿色环保,但其也存在一定的制约因素,如地层中的含水率及地下水流速度对冻结效果影响巨大.本文主要讲述了在沈阳地铁10号线东北大马路站~北大营街站区间联络通道冻结施工过程中因遭遇暗流地下水流速度过快导致无法正常形成冻结帷幕的判断措施,以及采用注浆隔水的相关处理方法和延长冻结的处理方案,最终取得了较好的冻结效果,给联络通道暗挖施工提供了保证,并为类似工程提供重要的借鉴和参考.
The artificial frozen ground method has the advantages of strong adaptability,flexible construction and green environmental protection for subway construction in urban water-rich strata.However,this method also has some restricting factors,such as the strata water content,velocity of groundwater flow,which have a great influence on the freezing result.This paper expounds the judgment measures that the freezing curtain cannot be formed normally due to the overspeed of groundwater flow,the relevant treatment method of grouting waterproof and the disposal scheme for extending the freeze,which are applied to the construction of subway connecting channel between Northeast Damalu Station and North Beidaying Station of in Shenyang Metro Line 10 that has achieved a good effect of on the freezing result and provided the guarantee for the underground construction of connected aisle.The result of this paper can also provide important reference for similar projects.
作者
乔国强
QIAO Guoqiang(China Railway 12^th Bureau Group 2Engineering Co.Ltd.,Taiyuan Shanxi 030006,China)
出处
《铁道建筑技术》
2020年第9期111-115,共5页
Railway Construction Technology
基金
中铁十二局集团第二工程有限公司科技研发计划项目(公司科[2018]10号)。
关键词
冻结法
联络通道
地下暗流
冻结帷幕
artificial frozen ground method
connected aisle
groundwater flow
freezing curtain
