Mechanistic understanding of linear erosion under concentrated flow based on laboratory simulations

Abstract Elucidating the mechanical mechanisms of linear erosion can contribute to the understanding of soil erosion and its prevention. However, few studies have investigated the development of sediment yield and the mechanical understanding of linear erosion. Experiments, four flow discharge rates and three slope gradients, were conducted for a mechanistic understanding of linear erosion. The conclusions are as follows: (1) The forces that detach soil can be divided into dynamic force (DF) and resistance force (RF) by vector decomposition and synthesis methods. The difference between DF and RF is defined as the effective force (EF), which represents the comprehensive mechanical effect of soil erosion. (2) DF and RF tend to be balanced during linear erosion. EF significantly decreased (p