EFFECT OF DIFFERENT SOIL SURFACE ON HYDRAULIC PARAMETERS AND SEDIMENT CONCENTRATION

Abstract

This study focuses on the effect of different soil surfaces on hydraulic parameters and sediment concentration. The hydraulic parameters including flow velocity, flow depth, shear stress and stream power. Furthermore, it analysed the effect of different slopes and soil surfaces (sand and gravel). The sediment transport channel was utilized to create various soil surface types, including sand, gravel, and clay, with slope angles that ranged from 0°, 5°, and 10°. The volume of sample water was collected at multiple intervals (20, 40, 60, 90, 100 and 120 min) for two (2) hours. Then, the hydraulic parameters and the concentration of the sediments were measured. Consequently, the slope angle between 5° and 10° produces the biggest increase in the relationship between sediment discharge and hydraulic parameters. Additionally, the flow discharge had a greater impact on the observed sediment discharge. On the other, flow velocity and unit stream power were directly had positive relation between the sediment discharge. Generally, the information regarding the hydraulic parameters and sediment relations under various soil surface can facilitate water resources planning and management projects in soil process-based erosion modelling.