Steep gradient, bad natural ecological conditions, and lack of nutrient conditions necessary for vegetation growth led a large number of rock-slopes exposed and serious consequences felt with respect to ecological environment. The chemical material was used to improve the mechanical properties, erosion resistance and integrity of clayey soil, which could be the main materials in the artificial reconstruction of rock-slope topsoil. In the present study, polyol prepolymer is used as a chemical material added to clayey soil to achieve rock-slope topsoil erosion control. A series of laboratory tests were performed on clayey soil with different polyol prepolymer contents and also compared to a fallow one by which the effect on mechanical properties, anti-freeze-thaw behavior, evaporation, erosion resistance and vegetation growth were investigated. The results indicated that polyol prepolymer could increase the mechanical properties, which could be subdivided into improvements in cohesion and slight changes in internal friction angle. Meanwhile, the anti-freeze-thaw behavior, evaporation and erosion resistance of clayey soil also increased by the presence of polyol prepolymer. Low content of polyol prepolymer could promote the germination and growth of vegetation. The effectiveness of the clayey soil treated by polyol prepolymer in the restoration of rock-slope was verified in the field test.

陡峭的坡度，恶劣的自然生态条件以及缺乏植被生长所需的养分条件导致大量的岩石斜坡裸露，并给生态环境带来了严重的后果。该化学材料用于改善黏性土的力学性能，抗侵蚀性和完整性，这可能是人工构造岩坡表层土的主要材料。在本研究中，将多元醇预聚物用作添加到粘性土壤中的化学材料，以实现对岩石坡面表层土壤侵蚀的控制。在具有不同多元醇预聚物含量的黏性土壤上进行了一系列实验室测试，并将其与休耕期进行了比较，研究了休耕期对机械性能，抗冻融行为，蒸发，抗侵蚀和植被生长的影响。结果表明，多元醇预聚物可以提高机械性能，可以细分为内聚力的改善和内摩擦角的细微变化。同时，多元醇预聚物的存在也增加了黏性土壤的抗冻融性能，抗蒸发性和抗侵蚀性。多元醇预聚物的含量低可以促进植物的发芽和生长。现场试验证实了用多元醇预聚物处理过的黏土在岩石边坡修复中的有效性。多元醇预聚物的存在也增加了粘土的耐蒸发性和抗侵蚀性。多元醇预聚物的含量低可以促进植物的发芽和生长。现场试验证实了用多元醇预聚物处理过的黏土在岩石边坡修复中的有效性。多元醇预聚物的存在也增加了粘土的耐蒸发性和抗侵蚀性。多元醇预聚物的含量低可以促进植物的发芽和生长。现场试验证实了用多元醇预聚物处理过的黏土在岩石边坡修复中的有效性。