Abstract
The main factors influencing soil erosion include the net rain excess, the water depth, the velocity, the shear stress of overland flows, and the erosion-resisting capacity of soil. The laws of these factors varying with the slope gradient were investigated by using the kinematic wave theory. Furthermore, the critical slope gradient of erosion was driven. The analysis shows that the critical slope gradient of soil erosion is dependent on grain size, soil bulk density, surface roughness, runoff length, net rain excess, and the friction coefficient of soil, etc. The critical slope gradient has been estimated theoretically with its range between 41. 5° ∼ 50°.
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Paper from LI Jia-chun, Member of Editorial of Committee, AMM
Foundation item: the Natioanl Natural Science Foundation of China (19832060); the Foundation of the State Key Laboratory of Soil Erosion and Arid Agriculture
Biography: LIU Qing-quan (1965-), Associate Professor, Doctor
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Qing-quan, L., Li, C. & Jia-chun, L. Influences of slope grandient on soil erosion. Appl Math Mech 22, 510–519 (2001). https://doi.org/10.1007/BF02437740
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DOI: https://doi.org/10.1007/BF02437740