諫早湾干拓調整池における降雨時の流れの予測に関する研究

抄録

Flood inflow is one of the factors which give influences to flow and material transport in closed water body. In this study, flows induced by flood in Isahaya flood regulation pond were predicted using a numerical simulation model composed by rainfall-runoff model and hydrodynamic model. In advance of the simulation, applicability of these models to Isahaya regions were examined. Simulated results shows that flows were formed in this pond by inflow of flood and gates operation to control the accumulated water level. On the other hand, at the water area apart from river mouths, effects of wind on flow are not negligible. This means that, in order to clear the material transport processes in this pond, influences of inflow of flood as well as wind should be considered in the wet weather condition.