摘要
地铁车站冻结法施工中,采用液氮和盐水冻结具有系统简单、冻结速度快、温度低和冻土强度高等特点,在车站基坑与隧道管片连接处及隧道管片四周的地层中形成冻结壁围护结构,土体加固性能好,可有效解决向密封连接处涌砂涌水现象.
During freezing method construction of subway station,liquid nitrogen and brine freezing method has many features,such as simple system,fast freezing speed,low temperature and high strength of frozen earth.Freezing wall enclosure structure was formed between station foundation pit and tunnel segment and around the tunnel segments,realizing favorable earth strengthening performance and effectively solving water inrush and sand gushing at airtight connection.
作者
刘晓毅
LIU Xiao-yi(BCEG Civil Engineering Co.,Ltd.,100015,Beijing,China)
出处
《建筑技术》
2019年第11期1288-1290,共3页
Architecture Technology
关键词
地铁工程
冷冻法施工
液氮积极冷冻
盐水维护冷冻
subway project
construction by freezing method
liquid nitrogen freezing
brine maintenance freezing
