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:: Volume 3, Issue 9 (1-2010) ::
jwmseir 2010, 3(9): 27-34 Back to browse issues page
Experimental Study of the Impact of Sediments on Stilling Basin of Diversion Dams
Mohammad ebrahim Banihabib *, Masih Elahi
University of Tehran
Abstract:   (8722 Views)

This research studies empirical equation for abrasion of stilling basin caused by impact of the sediment.

Review of previous papers shows that in previous researches, the mixture effect of erosion and impact are

studied without determination of the share of impact in the mixture effect. Also in the researches, the sediment

grain size is not as large as debris size in debris flow or experiments are done without tail water

depth. Therefore, in this research, the impact of large grain size is studied on concrete stilling basin with

tail water. First dimensional analysis is carried out, and subsequently experimental plan is designed. The

experiment includes concrete samples with three different cement contents, five depths of tail water, three

grain sizes. Abrasion of each grain impact is measured and recorded. Uni-variable and multivariable

regression analyses were employed to find possible relation between abrasion ratio and the dimensionless

parameter of the experiment. The empirical equations are judged using mean absolute relative errors of the

equations. Then a multivariable power equation is proposed for determination of the impacts of abrasion

of sediment. The equation shows the abrasion is function of dimensionless energy of sediment grain and

the ratio of the grain velocity on stilling basin to the grain velocity on water surface.

Keywords: Diversion Dams, Debris Flow, Abrasion of Stilling, Impact of Sediment and Check Dams.
Full-Text [PDF 974 kb]   (1693 Downloads)    
Type of Study: Research | Subject: Special
Received: 2013/02/12 | Accepted: 2014/05/25 | Published: 2014/05/25
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Banihabib M E, Elahi M. Experimental Study of the Impact of Sediments on Stilling Basin of Diversion Dams. jwmseir. 2010; 3 (9) :27-34
URL: http://jwmsei.ir/article-1-126-en.html


Volume 3, Issue 9 (1-2010) Back to browse issues page
مجله علوم ومهندسی آبخیزداری ایران Iranian Journal of Watershed Management Science and Engineering
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