冻结法在复杂地铁隧道工程中的应用——深圳地铁4A标段冻结施工

The Application of Freezing Method in complicated Metro Tunneling Project--4A Section Freezing Construction of Shenzhen Metro

深圳地铁4A标段暗挖隧道施工,地面是广深铁路桥,地下为古河道回填地层,施工条件复杂,特别是地下水流速达40m／d,常规工艺难以解决,通过技术改进,成功地采用冻结法进行地层加固,确保地面交通和建筑安全,隧道实现了安全按期和优质施工。

The 4 A section of Shenzhen Metro is a mining tunnel, Guang-shen Railway Bridge is right above it, while the underground is an ancient backfilled river course, the underground water flow velocity can be up to 40m/day, so it is hard to conduct the construction with conventional method. With innovative technology, the freezing method, the earth course is strengthened successfully and thus the safety of traffic and building on the ground is ensured. The project has been safely completed with high quality accor...