Measuring Sediment Transport Capacity of Concentrated Flow with Erosion Feeding Method

Sediment transport capacity in rills is an important parameter for erosion modeling on hillslopes. It difficult to measure, especially at gentle slopes with limited rill length. In this study, a special flume variable slope gradients upper and lower sections was implemented measure the sediment capacity. The section higher gradient generates faster water flow that could scout more feed rill. rest of set designated different runoff conditions. A series experiments were conducted silt-loam soil verify method. measured under 5°, 10°, 15°, 20°, 25° rate 2, 4, 8, 16 L min?1. values compared reference measurements from other similar materials setups. At high 25°, newly suggested method produced almost same values. Under low 5° maximum concentrations 8 m long uniform previous experiments, about 36% than new method, which insufficient make reach capacities followed trend as those slopes. can supply enough sediments ensure approach measurement and, therefore, provides feasible estimating conditions relatively