Thermal engineering calculation of one-dimensional (1-D) freezing is an important evidence for the evaluation of heat conduction process of artificial ground freezing (AGF). In this work, an array of field experiments of the 1-D freezing processes were carried out, and the coefficient of variation (COV) and scale of fluctuation (SOF) of uncertain hydrothermal properties were obtained. A1-D stochastic hydrothermal model was proposed, and the uncertain thermal processes are computed by a self-compiled program. A model validation and comparison with the experimental and numerical temperatures were presented. According to the relationship between autocorrelation distance (ACD) and SOF for the five autocorrelation functions (ACFs), the effects of the ACF, COV and ACD of hydrothermal properties and the COV of freezing temperature on the 1-D freezing thermal process were analyzed. The results show that moisture transfer can promote the heat transfer process. The thermal process of phase change is unsteady and the corresponding standard deviation (SD) is greater. The effects of ACF of hydrothermal properties on random thermal process are insensitive. The larger the COV of freezing temperature or hydrothermal property, the larger the SD of temperature. The larger the ACD of hydrothermal property, the smaller the SD of temperature.

一维（1-D）冻结的热工计算是评估人工地面冻结（AGF）导热过程的重要证据。在这项工作中，进行了一系列一维冻结过程的现场实验，并获得了不确定热液性质的变异系数（COV）和波动规模（SOF）。一个提出了一维随机热液模型，并通过自编程序计算了不确定的热过程。进行了模型验证，并与实验温度和数值温度进行了比较。根据五个自相关函数（ACF）的自相关距离（ACD）和SOF之间的关系，分析了ACF，COV和ACD的水热特性以及冻结温度的COV对一维冻结热过程的影响。结果表明，水分传递可以促进传热过程。相变的热过程不稳定，并且相应的标准偏差（SD）更大。ACF的水热性质对随机热过程的影响不敏感。冻结温度或水热性质的COV越大，温度的SD越大。水热性质的ACD越大，温度的SD越小。