The stability of soil aggregates is regarded as the key factor for soil erosion resistance on cut slopes of engineering works in serious debris flow disaster areas. Information on the stability of soil aggregates and related physicochemical properties on cut slopes is helpful to maintain the soil quality and slope stability. Therefore, in order to evaluate the stability of artificial soil aggregates for cut slope restoration, soil samples from three positions of a cut slope restored with artificial soil (upper slope, URS; middle slope, MRS; lower slope, LRS) and a nearby natural slope (NS) were analyzed. The results showed that the stability of soil aggregates (MWD, mean weight diameter; GMD, geometric mean diameter) of artificial soil on the cut slope (URS, MRS, LRS) was significantly lower than that of NS based upon fast wetting (FW) test and wet sieving. The values of MWD and GMD for slow wetting (SW) and mechanical breakdown (WS) tests in the four slopes had no significant difference. Among the three positions of cut slope, URS had the highest MWD and GMD, whereas MRS had the lowest corresponding value. Furthermore, >2 mm soil aggregates accounted for a major percentage of the total weight determined in all the tests for each slope. MWD for fast wetting increased with the increase in content of soil organic matter (SOM). Slaking was the main disruptive force leading to the breakdown of artificial soil aggregates, and FW was the best method to measure the stability of soil aggregates in these conditions. These results demonstrate that the SOM and the stability of soil aggregates on cut slope should be given more attention while conducting engineering works in serious debris flow disaster areas.

在严重泥石流灾害地区，土石料的稳定性被认为是在工程边坡上抗土壤侵蚀的关键因素。有关路cut边坡土壤团聚体稳定性和相关理化性质的信息有助于维护土壤质量和边坡稳定性。因此，为了评估用于恢复坡度的人工土壤集料的稳定性，从使用人工土壤恢复的坡度的三个位置（上坡度，URS；中坡度，MRS；下坡度，LRS）和附近的自然环境中的三个土壤样品进行评估。斜率（NS）进行了分析。结果表明，在开挖边坡上（URS，MRS，基于快速润湿（FW）测试和湿筛，LRS）显着低于NS。四个坡度的慢速润湿（SW）和机械击穿（WS）测试的MWD和GMD值无显着差异。在挖坡的三个位置中，URS的MWD和GMD最高，而MRS的对应值最低。此外，> 2 mm的土壤骨料占所有测试中每个坡度确定的总重量的主要百分比。随着土壤有机质（SOM）含量的增加，用于快速润湿的MWD也随之增加。剥落是导致人造土壤团聚体分解的主要破坏力，而FW是在这些条件下测量土壤团聚体稳定性的最佳方法。