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通过室内相同温度条件下５种土类的冻结试验，研究了不同土类冷生组构的形成。试验表明，分凝冰层及冷生组构的形成主要取决于土的水、热性质以及分散度等因素。日本火山灰中冻结缘具有较高的导湿系数，且冻结锋面前移速度缓慢，形成７．２ｃｍ的厚冰层；临夏高岭土、内蒙古粘土和兰州黄土中冻结缘导湿系数逐渐减小，且冻结锋面前移速度逐渐加大，形成从厚层状到微层状冷生构造的演变，分凝冰层厚度逐渐减薄，从３－１０ｍｍ到小于１－３ｍｍ；兰州砂土因原位冻结而形成整体状构造。
Through the freezing test of five kinds of soil at the same temperature in the laboratory, the formation of different cold-earth structures was studied. Experiments show that the formation of sub-condensate ice layer and chilling structure mainly depend on the water, thermal properties and dispersion of soil. The frozen edge of Japanese volcanic ash has higher water vapor permeability coefficient, and the front of frozen front moves slowly, forming a thick ice layer of 7.2cm. The coefficient of moisture transfer of freezing frozen edge in Linxia kaolin, Inner Mongolia clay and Lanzhou loess decreases gradually, Frontal migration speed gradually increased, forming from thick to micro-layered structure of cold evolution, the thickness of the sub-condensate ice layer gradually thinning, from 3-10mm to less than 1-3mm; Lanzhou sand due to in situ freezing Form a monolithic structure.