| Title |
Preliminary Hydrological Design for Sand Dam Installation at the Valley of Seosang-ri, Chuncheon |
| Authors |
정일문(Chung, Il-Moon) ; 이정우(Lee, Jeongwoo) |
| DOI |
https://doi.org/10.12652/Ksce.2019.39.6.0725 |
| Keywords |
샌드댐;장기유출량;저수지 유출추적 Sand dam;SWAT;Long term discharge;Reservoir routing |
| Abstract |
Sand dams are structures that can be used as auxiliary water resources in case of drought as sand accumulates due to barriers crossing valley rivers and valley water is stored in the voids, increasing the water level. This structure, which is mainly used in arid regions such as Africa, has not been installed in Korea. In Korea, there are only a few cases where water is taken from debris barriers that prevent debris flow. The purpose of this study is to evaluate the effect of water supply when the sand dam is installed downstream of the existing intake barrier in Seosang-ri valley, Chuncheon. For this purpose, modeling was performed by linking the basin hydrologic model and reservoir routing model. Changes in the water level, storage and discharge in the sand dam reservoir according to the size and intake of the sand dam are presented on a case-by-case basis. As a result of application, it was found that the water supply capacity due to the sand dam installation was improved at 95% reliability. Especially, when the size is L × B × Ho = 25 m × 15 m × 1 m and the pumping rates from intake barrier and sand dam are (Q1, Q2) = (30, 20), (35, 15) ㎥/day, the efficiency was the best for water supply of 50 ㎥/day. |