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以开放系统饱水正冻土为研究对象，作不同土质和不同初始条件下的单向冻结实验实验结束后立刻对试样做复形膜．随后将复形膜进行图像数字化处理，可反演分析冻结缘和冰分凝形成的时间、厚度、位置及冻结缘导湿系数结果表明，图像数字化技术具有较高的分析精度和准确性，是一种实用的创新研究方法；在给定的试验条件下，冰分凝速度随试验持续时间呈幂函数形式减小冰分凝温度在试验初期随冻深快速推移而降低，随后由于冻土段长度增加削减了温度梯度，冰分凝温度又逐渐升高并稳定；冻结缘导湿系数随试验历时呈指数形式减小
Taking the fully saturated frozen soil of the open system as the research object, the compound film was made on the sample immediately after the one-way freezing experiment under different soil conditions and different initial conditions. Subsequently, the complex film was digitized, and the time, thickness, location and freezing coefficient of the freezing edge were analyzed by inversion. The results show that the image digitization technique has high accuracy and accuracy A practical and innovative research method; under a given test condition, the ice condensing speed decreases exponentially with the duration of the test as a function of the ice temperature. During the initial test period, the temperature of the ice subduction decreases with the rapid progress of the freezing depth. Subsequently, The temperature gradient was reduced with the increase of length, and the temperature of the ice condensate gradually increased and stabilized. The coefficient of moisture transfer at freezing edge decreased exponentially with the test duration