Start Submission Become a Reviewer

Reading: Experimental Investigation of Sediment Trap Efficiency in Reservoirs

Download

A- A+
dyslexia friendly

Section I

Experimental Investigation of Sediment Trap Efficiency in Reservoirs

Authors:

N. M. T. K. Revel ,

University of Peradeniya, LK
About N. M. T. K.
Eng. , B.Sc. Eng. (Hons), Department of Civil Engineering
X close

L. P. G. R. Ranasiri,

University of Peradeniya, LK
About L. P. G. R.
Eng., B.Sc. Eng. (Hons), Department of Civil Engineering
X close

R. M. C. R. K. Rathnayake,

University of Peradeniya., LK
About R. M. C. R. K.
Eng. , B.Sc. Eng. (Hons),  Department of Civil Engineering
X close

K. P. P. Pathirana

University of Peradeniya, LK
About K. P. P.
Eng.(Prof.), B.Sc. Eng. (Hons.)(Peradeniya), M.Eng., Ph.D., C.Eng., FIE(Sri Lanka), MICE (London),
Professor of Civil Engineering, Department of Civil Engineering
X close

Abstract

Reservoir sedimentation has become one of the major problems facing water resources development projects in many countries around the world. However, only a limited number of studies has been reported in this field, particularly addressing the trap efficiency of reservoirs. In addition, whatever available studies in this area also consider few parameters governing the reservoir sedimentation. As a result, the available knowledge on trap efficiency is not very well defined. Brune curve [4] has been widely used for estimating trap efficiency of reservoirs at present, but it has several limitations, as it considers only the reservoir capacity and inflow ratio for estimating trap efficiency. The objective of this study is to formulate an improved methodology in estimating reservoir sedimentation through laboratory experiments. A small-scaled laboratory model was set-up in representing a reservoir and a series of tests were conducted by varying inflow rate, inflow sediment concentration, reservoir capacity and outflow rate. The experimental results were compared with the available theories and found that they are not very much in agreement with many of the existing theories which are mostly based on limited number of parameters. A comprehensive data analysis was performed using dimensional analysis to develop an improved relationship to estimate reservoir sedimentation incorporating many parameters governing the problem. However, the applicability of the proposed method is still limited only to the reservoirs with continuous spilling condition. In addition, only one type of sediment gradation (d50) was used in the experimental runs and thus, the effect of sediment sizes is not well represented in this method. However, the relationship developed in this study could be further improved by conducting more experimental runs by varying few other parameters which are not considered in the present study.


ENGINEER, Vol. 47, No.02, pp. 1-8 2014
DOI: http://doi.org/10.4038/engineer.v47i2.6863
How to Cite: Revel, N.M.T.K. et al., (2014). Experimental Investigation of Sediment Trap Efficiency in Reservoirs. Engineer: Journal of the Institution of Engineers, Sri Lanka. 47(2), pp.1–8. DOI: http://doi.org/10.4038/engineer.v47i2.6863
1
Views
0
Downloads
Published on 20 Apr 2014.
Peer Reviewed

Downloads

  • PDF (EN)

    comments powered by Disqus