冻结法土体加固在富水粉细砂层联络通道施工中的应用

Application of Frozen Soil Reinforcement in Construction of Connecting Passage in Water-rich Silt and Fine Sand Layer

地铁隧道联络通道施工是地铁施工过程中的重要风险源之一,可根据施工水文地质条件、埋深条件、周边环境条件选择不同的加固方法,郑州地铁3号线新柳路站—沙门路站区间联络通道位于富水粉细砂地层中,选用冻结法加固。主要对冻结方案、冻结加固施工以及最终冻结效果进行介绍,为后期同地层情况联络通道冻结法施工提供参考。

The construction of connecting passage of metro tunnel is one of the important risk sources in the process of metro construction. Different reinforcement methods can be selected according to the construction hydrogeological conditions,burial depth conditions and surrounding environmental conditions. The connecting passage between Xinliu Road Station and Shamen Road Station of Zhengzhou Metro Line 3 is located in the water-rich silty sand stratum,and the freezing method is used to reinforce it. This paper mainly introduces the freezing scheme,freezing reinforcement construction and the final freezing effect,which can provide reference for the later freezing method construction of the contact passage with the stratum condition.