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A Study on Reconstruction Models of Side-channel Spillway for Discharge Capacity Improvement  

Park, Sae-Hoon (한국시설안전기술공단 수리시설실, 서울시립대학교 공과대학 토목공학과)
Moon, Young-Il (서울시립대학교 공과대학 토목공학과)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.7, no.3, 2007 , pp. 9-18 More about this Journal
Abstract
The small and medium sized dams have the fill dam type of a lot of occasions, which are often weak in cases of major floods. For this reason, although a countermeasure is in great need, due to the importance of the facilities and financial situations, no direct safety measures have been taken. In this study, in order to minimize construction expenditure for practical safety measures in cases of major floods, the overflow section of spillway has been analyzed focusing on how the overflow capacity will increase in the case of partially rebuilding a part of the overflow section of spillway favorable for hydraulic conditions. The labyrinth weir and movable weir was chosen for reconstruction models of the overflow section. Moreover, for analyzing the after-effects of the reconstruction, a small scale dam was temporarily chosen for various experiments such as the hydraulic model testing and the three dimension numerical evaluation through the use of Flow-3D.
Keywords
small and medium sized dams; side-channel spillway; labyrinth weir; movable weir; submergence; discharge capacity improvement;
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