A calculation model for the width of bank collapse induced by wind waves

Wind wave erosion on reservoir slopes is an important problem that seriously threatens the safety of reservoirs and soil and water conservation. This paper proposes a method of calculating wind wave erosion and bank failure based on empirical formulas and the principle of bank slope stability, which simulates the evolution of bank slope stability in the process of wind wave erosion. Two seriously eroded bank slopes of Huangbizhuang Reservoir in Hebei Province, China, were selected as study cases. The erosion and bank failure process were simulated between 1968 and 2020, and the computed width of wind wave failure of bank slopes was compared with that of field measured one. The result showed that the proposed method can simulate the amount of wind wave erosion of the reservoir bank and the process of bank failure well. The proposed method provides guidance for the design, protection and reinforcement of bank slope.