关键词: 暴雨内涝, 水动力学模型, WebGIS, 预报预警系统, 洪泽湖

Abstract: There are multi showers and local rainstorms in Hongze Lake area in plum rain season. Backwater from high water of Hongze Lake and flood discharge rivers bring about the difficulty to drain out the rainstorm waterlogging. Consequently, flood disaster occurs frequently in Hongze Lake detention basin. In order to analyze the flood risk caused by rainstorm waterlogging scientifically and rationally, an 1D and 2D coupled hydrodynamic model is built. Basing on WebGIS, a B/S structured Hongze Lake detention basin rainstorm waterlogging forecasting and pre-warning system is established. The system can real time display rainfall and monitor water level variation online, pre-warn over-level flood, which is of great significance to ensure the flood control safety of Hongze lake detention basin and control flood risk in the downstream region of the Huaihe River.

Key words: rainstorm waterlogging, hydrodynamic model, WebGIS, forecasting and pre-warning system, Hongze Lake