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In order to investigate the development of the temperature field of a new type of freezing reinforcement under seepage conditions, in this paper, COMSOL finite element software was used to simplify the model and simulate the effect of groundwater seepage on the development of the temperature field of frozen pipes by coupling the Darcy’s law module and the heat transfer module for porous media. The heads of water were also varied to simulate the change in seepage velocity to further investigate the effect of seepage velocity on the temperature field. The results of the study show that the freezing wall formed in the high head region was thinner than that in the low head region due to the effect of seepage, and this phenomenon was aggravated with the increase of seepage rate; The effect of seepage action on the temperature field had a hysteresis along the seepage direction; When the seepage rate was greater than 1.65 m/d, the soil in the center of the device feezed better and could form a tight and dense freezing wall comparable to the size of the freezing device; When the seepage rate was greater than 5.78 m/d, the temperature of the center soil body gradually increased, and eventually the freezing curtain cannot be formed.

为探究渗流条件下新型冻结加固温度场的发展规律，本文采用COMSOL有限元软件，通过耦合多孔介质达西定律（Darcy’s law）模块与传热模块（heat transfer module）对模型进行简化，模拟地下水渗流对冻结管温度场发展的影响。此外，本文通过设置不同水头值以模拟渗流速度的变化，进一步探究渗流速率对温度场的作用效果。研究结果表明：受渗流影响，高水头区域形成的冻结壁厚度小于低水头区域，且该现象随渗流速率的提升而愈发显著；渗流对温度场的影响沿渗流方向存在滞后性；当渗流速率大于1.65 m/d时，装置中心区域的土体冻结效果更佳，可形成与冻结装置尺寸相当的致密连续冻结壁；当渗流速率大于5.78 m/d时，中心土体温度逐渐升高，最终无法形成冻结帷幕。