VERIFICATION OF HYDRAULIC MODEL TEST FOR NORTH DRAINAGE GATE ON ISAHAYA-BAY SEA RECLAMATION PROJECT AT SEAWATER INTAKE

摘要

A hydraulic model test is one of the important tools for design of hydraulic facilities. However, floods are often assumed as the condition of hydraulic model tests, because a lot of hydraulic model tests aim at the verification of hydraulic feature of the facilities. Therefore, the example that evaluated the reproducibility of result of the hydraulic model test after construction is few. On the other hand, an introduction of seawater through drainage gates aiming at investigation of relation between deterioration of water quality in Ariake Sea and the Isahaya sea area reclamation project was carried out in 2002. The forecasting of flow velocity distribution of influent was important because some facility might be broken with the bottom mud that lifted up by the seawater introduction. In this paper, we clarified the flow velocity distribution at the seawater introduction by the hydraulic model test. Moreover, we verified the reproducibility of the hydraulic model test compared with the result of field observation.