This paper highlights a preliminary study on the potential of a tipping flush gate to be used in an open storm drain to remove sediment. The investigation was carried out by using a plasboard model of the tipping flush gate installed in a rectangular flume. A steady flow experiment was carried out to determine the discharge coefficients and also the outflow relationship of the tipping flush gate. The velocity produced by the gate at various distances downstream of the gate during flushing operation was measured using a flowmeter and the velocity at all the points was higher than the recommended self-cleansing design available in the literature. A preliminary experiment on the efficiency of flushing was conducted using uniform sediment with d50 sizes of 0.81, 1.53 and 4.78 mm. Results generally showed that the number of flushes required to totally remove the sediment from the initial position by a distance of 1 m increased by an average of 1.50 times as the sediment deposit bed thickness doubled. An equation relating the number of flushes required to totally remove the sediment bed for 1 m with the sediment bed deposit thickness was also developed for the current study.
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Research Article|
October 25 2013
Hydraulics characteristics of tipping sediment flushing gate
C. H. J. Bong;
1River Engineering and Urban Drainage Research Centre (REDAC), Universiti Sains Malaysia, Engineering Campus, Seri Ampangan, 14300 Nibong Tebal, Penang, Malaysia
E-mail: [email protected]
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T. L. Lau;
T. L. Lau
1River Engineering and Urban Drainage Research Centre (REDAC), Universiti Sains Malaysia, Engineering Campus, Seri Ampangan, 14300 Nibong Tebal, Penang, Malaysia
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A. Ab. Ghani
A. Ab. Ghani
1River Engineering and Urban Drainage Research Centre (REDAC), Universiti Sains Malaysia, Engineering Campus, Seri Ampangan, 14300 Nibong Tebal, Penang, Malaysia
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Water Sci Technol (2013) 68 (11): 2397–2406.
Article history
Received:
June 28 2013
Accepted:
August 07 2013
Citation
C. H. J. Bong, T. L. Lau, A. Ab. Ghani; Hydraulics characteristics of tipping sediment flushing gate. Water Sci Technol 1 December 2013; 68 (11): 2397–2406. doi: https://doi.org/10.2166/wst.2013.498
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