水泥改良对地层冻结温度场影响分析

针对目前对于水泥改良土地层冻结温度场研究较少的问题,基于福州地铁二号线某联络通道冻结工程,对该工程积极冻结期土体冻结温度场进行数值模拟,得到了水泥改良土地层在冻结过程中的温度分布规律与冻结壁发展规律,分析了不同截面和不同温度路径处的冻结效果差异；并通过改变土体参数,得到了土体冻结效果随水泥掺量变化规律。研究成果将为今后水泥改良土地层冻结工程提供参考和借鉴。

Influence of cement improvement on stratum freezing temperature field

In view of the problem that there are few researches on the freezing temperature field of the cement soil stratum, based on the freezing project of a connected aisle of Fuzhou Metro Line 2, the numerical simulation of the soil freezing temperature field in the active freezing period of the project is carried out. The law of temperature distribution and the law of development of freezing wall in the freezing process of cement soil stratum are obtained, and the differences of freezing effect in different sections and different temperature paths are analyzed. By changing soil parameters, the law of soil freezing effect changing with cement content is obtained. The research findings will provide reference for the future freezing project of cement soil stratum.