Comparison of Different Methods for Estimating Bed Load using developed software of STE (Case study: Babolroud River)

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Teimourey R.; DEHGHANI A.A.

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Journal: Journal of Water and Soil Conservation Year:2020 | Volume:27 | Issue:1 Page(s): 229-236

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Title

Comparison of Different Methods for Estimating Bed Load using developed software of STE (Case study: Babolroud River)

Author(s)

Teimourey R. | DEHGHANI A.A. | Issue Writer Certificate

Keywords

Assessment of bed load estimatorsQ1

BabolroudQ2

Bed loadQ1

Sediment transport EstimatorsQ1

Abstract

Background and Objectives: The estimation of sediment load is vital for designing the crossing structure and rehabilitation of rivers. Bed load transport in alluvial channels has been extensively studied and different equations have been presented based on laboratory or field data. The estimation of Bed load transport rates using different equations gives different results. Due to the complexity of the interaction between sediment transport and flow behavior, there is still a high level of discrepancy ratio between the estimated and the measured values. Therefore, in each river, according to its hydraulic and geometrical conditions, it is necessary to choose the best equation that has a higher accuracy to estimate Bed load in that river. In order to achieve an equation that gives a better estimation, the conditions of the study area must be carefully compared with the conditions and assumptions in which each equation is formed, so that a more appropriate and logical answer can be found which is closer to reality. Therefore, it is very important to achieve new and innovative methods that can improve accuracy in calculation of the different estimation methods for sediment loads in rivers. According to different methods of estimating sediment load in the rivers and their high computing volume the need for a comprehensive computational software is vital to increase accuracy, as well as to compare the different results obtained from these methods in this field. Materials and Methods: Considering that there is still no software that can use most of the existing equations to calculate sediment load in the rivers and provide the best equation among them, in this research by developing a user-friendly software named “ Sediment Transport Estimator (STE)” , which is designed in the VB. NET programming language in the Windows environment, the ability of available equations of estimating Bed load in Babolrood River of Mazandaran province has been evaluated in 3 reaches with the names of Anarestan, Daronkola and Kelarikola; in 13 sections which Bed load is measuring. Results: The results showed that by using the developed software the best method for estimating Bed load in the studied river is Toffaleti method with an abundance of discrepancy ratio between 0. 5 to 2, 69. 2%. In this case, the abundance of discrepancy ratio between 0. 5 to 2 for the reach of Anarestan, Daronkola and Kelarikola are 66. 7, 100 and 50 percent, respectively. Conclusion: The Toffaleti, Yang, Yalin, Einstein-Brown and Ackers-White equations, respectively, offer better results than other equations, and the equation Toffaleti, in which 69. 2% of the data are calculating in discrepancy ratio range of 0. 5 to 2, is giving the best results in the studied river.

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APA: Copy

Teimourey, R., & DEHGHANI, A.A.. (2020). Comparison of Different Methods for Estimating Bed Load using developed software of STE (Case study: Babolroud River). JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 27(1 ), 229-236. SID. https://sid.ir/paper/373633/en

Vancouver: Copy

Teimourey R., DEHGHANI A.A.. Comparison of Different Methods for Estimating Bed Load using developed software of STE (Case study: Babolroud River). JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2020;27(1 ):229-236. Available from: https://sid.ir/paper/373633/en

IEEE: Copy

R. Teimourey, and A.A. DEHGHANI, “Comparison of Different Methods for Estimating Bed Load using developed software of STE (Case study: Babolroud River),” JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 27, no. 1 , pp. 229–236, 2020, [Online]. Available: https://sid.ir/paper/373633/en

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