EXPERIMENTAL STUDY OF THE EFFECT OF SPUR DIKE PERMEABILITY AND ANGLE ON SCOUR HOLE DIMENSIONS IN NON-SUBMERGED CONDITIONS

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EHDAEI P.; KASHEFIPOUR S.M.

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Journal: Journal of Irrigation Sciences and Engineering Year:2016 | Volume:38 | Issue:4 Page(s): 15-24

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Title

EXPERIMENTAL STUDY OF THE EFFECT OF SPUR DIKE PERMEABILITY AND ANGLE ON SCOUR HOLE DIMENSIONS IN NON-SUBMERGED CONDITIONS

Author(s)

EHDAEI P. | KASHEFIPOUR S.M. | Issue Writer Certificate

Keywords

SPUR DIKEQ1

SCOURQ1

PERMEABILITYQ3

Abstract

SPUR DIKE is a hydraulic structure which has an essential role in reducing the shear force on river banks. The interaction between the structure and flow makes vertical and horizontal vortices, which are the main reason for producing a local SCOUR hole around SPUR DIKE and finally damaging it. The behavior of the flow around a SPUR DIKE and the intensity of degradation and aggradation depend on different factors such as the type of the SPUR DIKE, its position, its angle with the bank, and some other parameters. One of the most important factors is the PERMEABILITY of the SPUR DIKE. This experimental study focuses on the effect of SPUR DIKE’s angle and its PERMEABILITY on SCOUR hole dimensions in non-submerged conditions. According to the results, when PERMEABILITY increased up to 50%, SCOURing decreased significantly. For Fr=0.24, and in the vertical position of SPUR DIKE (90 degrees) with 50% PERMEABILITY, relative depth, length, and width of the SCOUR hole decreased 67%, 75.3% and 45.5%, respectively in comparison with impermeable SPUR DIKE. Also for the angle of 120 degrees, relative depth, length and width of the SCOUR hole declined 64.1%, 72.1% and 35.4%, respectively. Similar results were obtained for the angle of 60 degrees with the reduction of relative depth, length and width of the SCOUR hole being measured 60.2%, 68.7% and 38.8%, respectively. In addition, for 50% PERMEABILITY, the highest level of SCOURing was for the angle of 60 degrees, whose average relative depth, length, and width were 0.19, 0.7 and 1.2, respectively.

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APA: Copy

EHDAEI, P., & KASHEFIPOUR, S.M.. (2016). EXPERIMENTAL STUDY OF THE EFFECT OF SPUR DIKE PERMEABILITY AND ANGLE ON SCOUR HOLE DIMENSIONS IN NON-SUBMERGED CONDITIONS. IRRIGATION SCIENCES AND ENGINEERING (JISE) (SCIENTIFIC JOURNAL OF AGRICULTURE), 38(4), 15-24. SID. https://sid.ir/paper/217318/en

Vancouver: Copy

EHDAEI P., KASHEFIPOUR S.M.. EXPERIMENTAL STUDY OF THE EFFECT OF SPUR DIKE PERMEABILITY AND ANGLE ON SCOUR HOLE DIMENSIONS IN NON-SUBMERGED CONDITIONS. IRRIGATION SCIENCES AND ENGINEERING (JISE) (SCIENTIFIC JOURNAL OF AGRICULTURE)[Internet]. 2016;38(4):15-24. Available from: https://sid.ir/paper/217318/en

IEEE: Copy

P. EHDAEI, and S.M. KASHEFIPOUR, “EXPERIMENTAL STUDY OF THE EFFECT OF SPUR DIKE PERMEABILITY AND ANGLE ON SCOUR HOLE DIMENSIONS IN NON-SUBMERGED CONDITIONS,” IRRIGATION SCIENCES AND ENGINEERING (JISE) (SCIENTIFIC JOURNAL OF AGRICULTURE), vol. 38, no. 4, pp. 15–24, 2016, [Online]. Available: https://sid.ir/paper/217318/en

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