针对南方某些富水地层下的地铁施工问题,结合某地铁联络道冻结法施工的工程实例,采用低温盐水冻结法对富水地层进行冻结施工,分析了该案例中冻结施工所需要的设备、施工方案的确定以及监控量测的作用。结果表明:在冻结时间40d前后土体开始交圈,冻胀压力开始降低;50d后冻结壁厚度>1.8m,土体平均温度\r\nAiming at the subway construction under some water-rich strata in South China,the theoretical basis of soil freezing and the construction technology of freezing method are mainly introduced.In this paper,a freezing tunnel construction method is used to freeze the water-rich stratum by cryogenic brine freezing method.The equipment,construction scheme and monitoring and measuring function of freezing construction in this case are expounded.The results showed that the soil started to circle and the frost heave pressure began to decrease40days after freezing time.The frozen wall thickness was>1.8m after50days and the average temperature of soil was<-10℃,which satisfied the freezing index.The successful solution to the problem caused by the large soil moisture content in the construction of the subway link can not be properly reinforced.However,due to the method of soil consolidation is a temporary reinforcement of soil and the existence of the phenomenon of frost heave and thaw,the focus of future research should still be placed on the prevention and control measures on this issue.The successful application of the freezing method of the subway contact point can be used for reference for similar underground projects,which is of certain reference significance.\r\n关 键 词：特殊地层 冻结理论 地下铁道 施工技术 \r\nSpecial stratum freezing theory subway construction technique \r\n分 类 号： U231.3 [交通运输 > 铁路运输 > 特种铁路 > 地下铁路 > 地铁施工、改建与扩建]\r\n\r\n \r\n 作者简介：王晨星,硕士研究生。研究方向:地下工程。;通信作者:刘远才,硕士,教授。研究方向:道路工程。E-mail:1121702038@qq.com\r\n \r\n\r\n