Abstract: By using BSTEM (Bank Stability and Toe Erosion Model),the stability safety factors of two typical sections are calculated respectively under different conditions. These conditions include bank slope morphology,water level,lateral erosion distance of toe,vegetation type and revetment project. The impact of these factors on the river bank slope stability are also analyzed. Results show that water level variation has significant impact on riverbank stability. The stability of bank slope with high and low water levels is closely related with the riverbank composition. When the rate of water level recession is high,the safety factor reduces remarkably which is prone to cause bank collapse. It also shows that the safety factors are different in different bank slope morphologies,and the safety factor decreases as the lateral erosion distance of toe increases. Revetment project and vegetation coverage will increase the bank slope stability.

Key words: BSTEM, riverbank stability, bank failure, bank morphology, water level variation