复杂地质条件下风井先隧后井设计方案研究

Study about method of airshaft constructing with tunnels followed by airshaft under complicated geological conditions

以佛山地铁2号线南庄—湖涌中间风井工程为例,阐述了传统盾构隧道中间风井施工方法存在的问题,提出了先隧后井的设计方案,并阐述了该方案的施工工艺,在节约成本、缩短工期的同时,降低了基坑施工的风险。

Taking Nanzhuang-Huyong middle airshaft project at Nanzhuang along the No. 2 subway in Foshan as the example,the paper illustrates the problems in the middle airshaft construction methods of the traditional shield tunnels,points out the design scheme for the airshaft tunnel followed by airshaft,and illustrates its construction craft,so as to save cost,shorten construction period,and lower the risks of the foundation pit construction.