The Effect of Slot’ s Distance of Triangular Spur Dike’ s Nose on the Pattern of Erosion and Sediment

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DOROSTI M.; SHAFAI BEJESTAN M.; Amirsalari Maymani F.

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Journal: Journal of Water and Soil Science Year:2018 | Volume:22 | Issue:2 Page(s): 67-79

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Title

The Effect of Slot’ s Distance of Triangular Spur Dike’ s Nose on the Pattern of Erosion and Sediment

Author(s)

DOROSTI M. | SHAFAI BEJESTAN M. | Amirsalari Maymani F. | Issue Writer Certificate

Keywords

Slot positionQ1

Triangular spur dikeQ1

Bank protectionQ1

Pattern of erosion and sedimentQ1

Abstract

Scour around structures in the river is the most destructivr factor of these structures. Therefore, different methods have been studied to reduce it. A creation slot is one of these methods in the suitable position that can be modified to control the flow pattern scour. In this study, the effects of using two parallel chord rectangular slots in the single spur dike with the opening of the effective spur dike area of 10% and a ratio of a/b = 4 (a and b are the length and width of the slot) on two occasions were investigated, one near the bed (near the slot spur dike) and the other near the water surface (away from the nose of spur dike) on the Pattern of erosion and sediment around the nose Triangular spur dike in clear water conditions. In all experiments, flow depth and angle of the Triangular spur dike installation angle were constant. The experiment was done in different hydraulic conditions (Froude number 0. 287, 0. 304, 0. 322). Eventually the results of spur dike without slot (control experiments) were compared. The results showed the slot near the bed toward the slot near water surface and control experiments had a better performance in reducing the maximum depth of scour and deposition of sediments washed to the outer bank. The reduction of the maximum depth of scour at the slot near the bed in Froude numbers 0. 287, 0. 302 and 0. 322, respectively, was compared to the control experiments, which were 23%, 13% and 24%, respectively, and then compared to the slot near the water surface, which was 60%, 40% and 32% respectively.

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APA: Copy

DOROSTI, M., SHAFAI BEJESTAN, M., & Amirsalari Maymani, F.. (2018). The Effect of Slot’ s Distance of Triangular Spur Dike’ s Nose on the Pattern of Erosion and Sediment. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 22(2 ), 67-79. SID. https://sid.ir/paper/363950/en

Vancouver: Copy

DOROSTI M., SHAFAI BEJESTAN M., Amirsalari Maymani F.. The Effect of Slot’ s Distance of Triangular Spur Dike’ s Nose on the Pattern of Erosion and Sediment. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2018;22(2 ):67-79. Available from: https://sid.ir/paper/363950/en

IEEE: Copy

M. DOROSTI, M. SHAFAI BEJESTAN, and F. Amirsalari Maymani, “The Effect of Slot’ s Distance of Triangular Spur Dike’ s Nose on the Pattern of Erosion and Sediment,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 22, no. 2 , pp. 67–79, 2018, [Online]. Available: https://sid.ir/paper/363950/en

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