Splash Erosion Properties of Compacted Cohesive Soil

The effects on different rainfall characteristics and soil properties of rainfall splash erosion were studied by using indoor simulated rainfall device and compacted cohesive soil test model, and then the function relation between them was summarized. The results show that, in the single rainfall process, raindrop size and rainfall splash erosion amount have power function relationship, bigger raindrop diameter, greater splash erosion amount. Soil initial water content and slope show parabola relationship with rainfall splash erosion amount. In the individual rainfall process, there is the same effect law as the single rainfall process. In addition, splash erosion law is consistent whether the soil surface crust or not, but when there is no crust, rainfall splash amount is more than that when there is crust, which illustrates crust can reduce rainfall splash erosion in some extent.