PREDICTION OF THE SEDIMENT LOAD IN THE RIVER BY HEC-RAS

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JABARY AZADEH; HOSSEINI SEYED AHMAD; HAGHIABI AMIR HAMZEH; EMAMGHOLIZADEH SAMAD; BEHNIA ABDOLKARIM

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Journal: Journal of Irrigation and Water Engineering Year:2014 | Volume:4 | Issue:16 Page(s): 12-23

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Title

PREDICTION OF THE SEDIMENT LOAD IN THE RIVER BY HEC-RAS

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Keywords

ABHAR ROODQ2

EROSIONQ2

HEC-RAS 4.1Q2

SEDIMENTATIONQ2

Abstract

Estimation of the sediment load which a specific flow is capable to transport, is one of the main topics of sediment researches. ABHAR ROOD River is one of the major rivers in Zanjan province which plays a big role in the agriculture of the region. In the present research, HEC-RAS 4.1 model is utilized to simulate the sediment hydraulic in ABHAR ROOD River. For this purpose, 730 sections along 50 km of ABHAR ROOD have been prepared by using the DEM map of the river (map scale 1:4000) in Hec-GeoRas extension of ArcMap, thereafter it was used to introduce the river geometry information to Hec-RAS model. Also the discharge amount with 25 years return period has been calculated in HYFA model using the 33 years flooding discharge data which was measured at the Ghorveh hydrometric station and used to simulate hydraulic flow of the ABHAR ROOD River. After calibrating the model for hydraulic conditions of the river, sediment boundary condition and bed gradation have been defined in model. Thereafter the sediment transport capacity of the river was calculated by transport functions at total cross sections. The comparison between the achieved results and measured data shows that, the Yang equation has minimum error compared with other equations. Therefore Yang equation due to its acceptable results is recommended to recognize the sediment transport capacity potential. In addition, to investigate the EROSION and SEDIMENTATION status of ABHAR ROOD River, Hjulstrum and Shields criteria have been utilized. The hydraulic condition of this river shows the EROSION status at the whole crosses of the river.

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APA: Copy

JABARY, AZADEH, HOSSEINI, SEYED AHMAD, HAGHIABI, AMIR HAMZEH, EMAMGHOLIZADEH, SAMAD, & BEHNIA, ABDOLKARIM. (2014). PREDICTION OF THE SEDIMENT LOAD IN THE RIVER BY HEC-RAS. IRANIAN OF IRRIGATION & WATER ENGINEERING, 4(16), 12-23. SID. https://sid.ir/paper/247203/en

Vancouver: Copy

JABARY AZADEH, HOSSEINI SEYED AHMAD, HAGHIABI AMIR HAMZEH, EMAMGHOLIZADEH SAMAD, BEHNIA ABDOLKARIM. PREDICTION OF THE SEDIMENT LOAD IN THE RIVER BY HEC-RAS. IRANIAN OF IRRIGATION & WATER ENGINEERING[Internet]. 2014;4(16):12-23. Available from: https://sid.ir/paper/247203/en

IEEE: Copy

AZADEH JABARY, SEYED AHMAD HOSSEINI, AMIR HAMZEH HAGHIABI, SAMAD EMAMGHOLIZADEH, and ABDOLKARIM BEHNIA, “PREDICTION OF THE SEDIMENT LOAD IN THE RIVER BY HEC-RAS,” IRANIAN OF IRRIGATION & WATER ENGINEERING, vol. 4, no. 16, pp. 12–23, 2014, [Online]. Available: https://sid.ir/paper/247203/en

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