Experimental Investigation of Scouring around Different Combinations of Impermeable Series Spur dikes

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

nayyer shahab; KARAMI HOJAT; FARZIN SAEED; ROSTAMI MOHAMMAD

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Modares Civil Engineering journal Year:2021 | Volume:21 | Issue:5 Page(s): 0-0

Download Full-Text

View:

Download:

Cites:

Information Journal Paper

Title

Experimental Investigation of Scouring around Different Combinations of Impermeable Series Spur dikes

Author(s)

nayyer shahab | KARAMI HOJAT | FARZIN SAEED | ROSTAMI MOHAMMAD

Keywords

Combination series spur dikes

T-shaped spur dike

optimal composition

Reduce scouring

experimental investigation

Abstract

Improvement of the river route is one of the goals that considered in using a spur dike to control the flood, prevent bed erosion, stabilize and protect the walls, and set river width. Spur dikes are structures that with adjustment hydraulic conditions and make smooth flow cause to reduce flow erosion power and the ability to carry sediments. And also makes good situations for sedimentation and sides consolidation. Spur dikes are permeable and impermeable. Impermeable spur dikes have different shapes which according to erosion amount and condition can be used. Common spur dikes have simple, L and T-shaped geometric shapes. This research has been conducted to optimize the various combinations of spur dikes to Reduce scouring. All of the scour and flow measurements were collected in a flume with 14 m long, 1. 5 m wide, and 0. 6 m deep located at the Soil Conservation and Watershed Management Research Institute. Impermeable spur dike with different geometric shapes were tested in a series with 3 spur dikes for different compositions in U/Ucr=0. 95 conditions. Due to threshold flow condition by using Shields parameters in all tests, the calculated discharge at the mentioned conditions is 30 Lit/s. For determine the equilibrium scour depth for each geometric, control test with 30 hours have been done. The first spur dike in all combinations was T-shaped. The results show that for first spur dike in combinations, in 10% of scouring equilibrium time, about 90% of scouring occurred. So with these results, 300 min (5 hours) test time was selected for do all main tests to achieve more than 85% of scouring. Also, in the results of different tests it was observed that maximum scour depth happens around first spur dike. So geometry of first spur dike is very important in reduce average scour depth in combinations. Mean scour depth in these combinations for first, second and third position respectively are about 2. 44y, 1. 21y and 0. 75y which in that for second and third positions with 50% and 69% have fewer scour depth in comparison with first position. Combination (T L T) is the best composition for the lowest average scour depth in all three positions, which 2 times the flow depth have erosion. The best performance in the whole range of spur dikes due to the amount of erosion volume is for the composition (T I I), that’, s about 70% of the massive erosion in other compositions. Mean scour depth in all positions for these 2 series are 1. 39y and 1. 63y. Average scour depth in (T T T) series is 1. 41y which more than (T L T) combination. The reason for this results can be effect of middle L-shaped spur dike on T-shaped spur dike scour depth in third position. This effect cause to Reduce scouring in about 28%. (T I I), (T L T) and (T T T) series spur dikes are the best combinations which each one has special performance, therefore, for design, the best composition should be choice for target of exploitation and optimal economic conditions.

Multimedia

No record.

Cites

No record.

References

No record.

Cite

APA: Copy

nayyer, shahab, KARAMI, HOJAT, FARZIN, SAEED, & ROSTAMI, MOHAMMAD. (2021). Experimental Investigation of Scouring around Different Combinations of Impermeable Series Spur dikes. MODARES CIVIL ENGINEERING JOURNAL, 21(5 ), 0-0. SID. https://sid.ir/paper/1036770/en

Vancouver: Copy

nayyer shahab, KARAMI HOJAT, FARZIN SAEED, ROSTAMI MOHAMMAD. Experimental Investigation of Scouring around Different Combinations of Impermeable Series Spur dikes. MODARES CIVIL ENGINEERING JOURNAL[Internet]. 2021;21(5 ):0-0. Available from: https://sid.ir/paper/1036770/en

IEEE: Copy

shahab nayyer, HOJAT KARAMI, SAEED FARZIN, and MOHAMMAD ROSTAMI, “Experimental Investigation of Scouring around Different Combinations of Impermeable Series Spur dikes,” MODARES CIVIL ENGINEERING JOURNAL, vol. 21, no. 5 , pp. 0–0, 2021, [Online]. Available: https://sid.ir/paper/1036770/en

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans

No record.

Recommended Workshops