EFFECT OF SEDIMENT LOAD FROM MAIN CANAL ON MAXIMUM SCOUR DEPTH AT RIVER CONFLUENCE

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BALOUCHI BEHNAM; SHAFAEI BAJESTAN MAHMOUD

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Journal: Journal of Irrigation and Water Engineering Year:2011 | Volume:2 | Issue:5 Page(s): 1-14

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Title

EFFECT OF SEDIMENT LOAD FROM MAIN CANAL ON MAXIMUM SCOUR DEPTH AT RIVER CONFLUENCE

Author(s)

BALOUCHI BEHNAM | SHAFAEI BAJESTAN MAHMOUD | Issue Writer Certificate

Keywords

MAXIMUM SCOUR DEPTHQ2

RIVER CONFLUENCEQ2

SEDIMENT FEEDERQ2

SEDIMENT LOADQ1

Abstract

River confluence is an important element of river system. At this place, because of complex three dimensional flow structure, scour and sedimentation is occur which can damage the surrounding area, change river morphology and can be harmful to navigation. Many variables can effect the sedimentation pattern at RIVER CONFLUENCE such as bed load coming from the main channel which has not been studied in the past. Therefore it is the main goal of this study to experimentally investigated the effect of bed load. To do so first a general non dimensional relation was developed, then a SEDIMENT FEEDER was designed and calibrated. Afterwards, series of experimental tests were conducted in various hydraulic conditions and sediment discharge. The results indicate that increasing the amount of bed load sediment, reducing the MAXIMUM SCOUR DEPTH from up to 35 percent. Also it was observed that bed scour and sedimentation patterns can change when the bed load is presented. Finally, an equation was developed to predict the scour depth in terms of SEDIMENT LOAD. The accuracy of the new is within 95 percent. The sensitivity analysis of this equation shows that it is more sensitive to Densimetric Froude. The new relation was compare with Ghobadian and Shafai Bejestan (2007).

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APA: Copy

BALOUCHI, BEHNAM, & SHAFAEI BAJESTAN, MAHMOUD. (2011). EFFECT OF SEDIMENT LOAD FROM MAIN CANAL ON MAXIMUM SCOUR DEPTH AT RIVER CONFLUENCE. IRANIAN OF IRRIGATION & WATER ENGINEERING, 2(5), 1-14. SID. https://sid.ir/paper/247163/en

Vancouver: Copy

BALOUCHI BEHNAM, SHAFAEI BAJESTAN MAHMOUD. EFFECT OF SEDIMENT LOAD FROM MAIN CANAL ON MAXIMUM SCOUR DEPTH AT RIVER CONFLUENCE. IRANIAN OF IRRIGATION & WATER ENGINEERING[Internet]. 2011;2(5):1-14. Available from: https://sid.ir/paper/247163/en

IEEE: Copy

BEHNAM BALOUCHI, and MAHMOUD SHAFAEI BAJESTAN, “EFFECT OF SEDIMENT LOAD FROM MAIN CANAL ON MAXIMUM SCOUR DEPTH AT RIVER CONFLUENCE,” IRANIAN OF IRRIGATION & WATER ENGINEERING, vol. 2, no. 5, pp. 1–14, 2011, [Online]. Available: https://sid.ir/paper/247163/en

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