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http://dx.doi.org/10.3741/JKWRA.2005.38.8.675

The Variation of Hydraulic Characteristics Depending upon Removal of the Hydraulic Structures near the Junction between Nam Han and Pyeong Chang Rivers  

Choi, Gye-Woon (Dept. of Civil & Environmental System Engineering., Incheon Univ.)
Yoon, Yong-Jin (Dohwa Consulting Engineers CO., LTD.)
Cho, Jun-Bum (Dept. of Civil & Environmental System Engineering., Incheon Univ.)
Publication Information
Journal of Korea Water Resources Association / v.38, no.8, 2005 , pp. 675-689 More about this Journal
Abstract
In this paper, it was analyzed the variation of hydraulic characteristics through changing discharge at main channel and lateral channel and state of hydraulic structure at the natural channel junction by experiment. The experimental area is chosen at the channel junction of Nam-Han river and Pyeongchang river. The scale of the experiment is 1/200 in horizontal, and 1/66.7 in vortical, so the distoration rate is 3. From the experiment, the reduction effect of the water level is $12\%$ in the case of removing intank dam, and $5\%$ at the hydro-electronic dam removing case. Furthermore, in the case of two hydraulic structures removing, the reduction effect of water level is $18\%$ at the channel junction. Also, the stagnation zone, which is cased diminution of the channel at the junction, is decreasing through removing the structures.
Keywords
channel junction; hydraulic structure; hydraulic model; backwater effect;
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