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本文从冻土园柱热交换和冻土扩展热平衡的角度,探讨了土层冻结过程所需制冷量的构成。文章介绍了根据相似理论建立的流水冻结试验模型和一系列大流水速度的土层冻结模拟试验。揭示了动水条件下的土层液氮冻结冻土扩展半径与冻结时间的试验计算和工程应用公式。
In this paper, from the perspective of the heat exchange between the frozen soil column and the expanded thermal equilibrium of the frozen soil, the composition of the refrigeration required for the soil freezing process is discussed. This paper introduces a flow freezing experimental model and a series of soil freezing simulation experiments with high flow velocity established based on similarity theory. The experimental calculations and engineering application formulae of the frozen radius and freezing time of liquid nitrogen frozen soil in soil under dynamic conditions were revealed.