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:: Volume 3, Issue 6 (4-2009) ::
jwmseir 2009, 3(6): 27-38 Back to browse issues page
Experimental Investigation on the Effects of Horizontal Footing on Topography of Bed in 90o Bend
Ali Reza Rezania *, Mahmood Shafai-Bejestan, Said mahmood Kashefipour
Shahid Chamran University, Ahwaz, Iran
Abstract:   (10859 Views)

The outer banks in river bends are subject to sever bank erosion due to secondary flows. Therefore, it

is essential to have some measurements for protection. The protection must be based on maximum scour

hole. Any measurements to reduce the scour hole would be beneficial for protection. In this paper the effect

of horizontal footing on reduction of scour hole has been investigated. To reach such goals, an experiment

with a 90 degree flume was carried out and series of horizontal footing were installed at outer bank in four

different elevations of 0, 20, 40 and 60 percent of maximum scour depth.

By comparison of the bed topography with and without footing a maximum scour reduction of more

than 44.5% was obtained with footing installed at elevation of 40% of the maximum scour depth. The

results of this study reveal that the point of maximum scour hole has been displaced from the outer bank

to the center of the flume.

Keywords: Bend, Erosion hole, Horizontal Footing, Bank protection and Bed Level.
Full-Text [PDF 524 kb]   (2135 Downloads)    
Type of Study: Research | Subject: Special
Received: 2013/02/3 | Accepted: 2014/05/25 | Published: 2014/05/25
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Rezania A R, Shafai-Bejestan M, Kashefipour S M. Experimental Investigation on the Effects of Horizontal Footing on Topography of Bed in 90o Bend. jwmseir. 2009; 3 (6) :27-38
URL: http://jwmsei.ir/article-1-99-en.html

Volume 3, Issue 6 (4-2009) Back to browse issues page
مجله علوم ومهندسی آبخیزداری ایران Iranian Journal of Watershed Management Science and Engineering
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