Predict the rate of bank erosion in Lavij river during a particular flow by using BSTEM

Document Type : Research Paper

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Abstract

River bank erosion is a major management problem in alluvial corridors. Every year, structures and farmland Lavij riverbank are in risk of change the riverbed and bank erosion. Thus any operational and administrative facility on the edge of the river should be based on knowledge of future mobility river and prediction of erosion. In recent years the use of numerical modeling for determining channel mobility, and thus defining the extent of the erodible corridor have improved. In this paper was simulated Lavij river bank(reach 20m) using by bank stability and toe erosion model. The purpose of this simulation is to predict the regression of river bank and estimate the amount of sediment. For this purpose, the cross-section geometry data, discharge and flow data of the river, geotechnical data of forming layers and bank covering data enter the model. Model, for both the bankfull and peak discharge was simulated. The simulation results showed that river bank is unstable and undercutting and bank erosion is active. The recession and bank erosion, during the peak discharge was significantly higher than the current bankfull discharge. It also turned out, the bank recession in lower layers cohesionless sediments, mainly of gravel and cobble stone are far greater than the in upper adhesive layers.
River bank erosion is a major management problem in alluvial corridors. Every year, structures and farmland Lavij riverbank are in risk of change the riverbed and bank erosion. Thus any operational and administrative facility on the edge of the river should be based on knowledge of future mobility river and prediction of erosion. In recent years the use of numerical modeling for determining channel mobility, and thus defining the extent of the erodible corridor have improved. In this paper was simulated Lavij river bank(reach 20m) using by bank stability and toe erosion model.

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References

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Geographical Planning of Space
Volume 9, Issue 33 - Serial Number 33
December 2020
Pages 265-278

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