关键词: 水动力模型, 供水工程, 泵站规模, 感潮地区, 引江泵站

Abstract: Taking the water diversion region from the Yangtze River in Nantong, Jiangsu as a subject, a hydrodynamic river network model is established, and the necessity of constructing a new pumping station and its scale are discussed. The results show that the five built sluices do not satisfy the planned water demand, thus building a new pumping station is necessary. The larger the scale of a pumping station is, the higher the pumping load is, however, when the scale is larger than 180 m3/s, the minimum inner river water level increases, which would lead to decrease in gravity diversion duration and flow, and both the gravity flow and the pumping flow increase less. Establishing a pumping station with scale of 150 m3/s is economical, reasonable and compatible with planned water demand in terms of increasing water supply and water level as well as gravity diversion. The results reflect complex relationship between diversion volume of river network and inner river water level, the Yangtze River tidal level, gravity flow and pumping diversion flow.

Key words: hydrodynamic river network model, water supply project, pumping station scale, tidal regions, river diversion pumping station