关键词: SWMM模型, 模拟, 排水管网, 城市内涝, 南昌市

Abstract: The drainage network, road and river system of Qingshan Lake District of Nanchang City, Jiangxi Province were generalized by using SWMM software to simulate the drainage with rainstorm recurrence periods of 1, 2, 5, 10, 50 a. The severity of the water logging can be determined by considering the water logging depth, area and duration. The result shows that the backwater effect of submerged discharge of pipe network is an important cause for water logging. For the study area, the drainage is less influenced by half-submerged discharge and free discharge. However, the submerged discharge can cause the sharp decline of the drainage capacity of the network.

Key words: SWMM model, simulation, pipe drainage, urban waterlogging, Nanchang