제내 비탈끝 유공관을 이용한 제방 침투 조절에 관한 연구

Abstract

The levee is the facility which is constructed along with a river for the protection of landside and for passage of water when there is a flood. When the seepage is exposed to the atmosphere on the landside surface of levee, it may eventually lead to levee failure. The seepage water may be removed from the landside surface by a properly designed drainage system. The purpose of the study is to show seepage control potential of levee by a perforated drainpipe by hydraulic experiments. The experimental levee has the following dimension: the bottom width is 2.8 m; the top width is 0.4 m; the levee body height is 0.6 m; the side slop is 1:2; and the foundation ground depth is 0.3 m. The test cases were performed with the four stages of 0.6, 0.7, 0.8, and 0.85 m at the riverside and the piezometric heads on the levee bottom were mesured. The position of a perforated drainpipe greatly affected the seepage through levee body. The larger the perforation area got, the lower the phreatic surface level was. The experiment results were used for the calibrations and verifications of SEEP/W model. The perforated drainpipe for seepage control might be more economical than covering method. Elements of the perforated drainpipe may be made in a factory and it can reduce the construction period.