Optimization of the operation dispatching of urban waterlogging prevention system under the background of “happy rivers”—A case study of Qingshan Lake drainage area in Nanchang City, Jiangxi Province
TANG Ming1, LIAO Yingjuan2, ZHAN An'an2
1. School of Hydraulic & Ecological Engineering, Nanchang Institute of Technology, Nanchang 330099; 2. Nanchang Water Conservancy Planning and Design Institute, Nanchang 330009
Abstract:Happy rivers explains the connotation of "Comprehensive consideration and measures in water conservancy" and also puts forward more clear requirements for the management of urban rivers. However, there are often conflicts among the goals of urban water security, water landscape, water ecology and so on. It is inevitable to have adverse effects on water landscape and water ecology while the flood regulation function is brought into play. It is a common problem faced by cities in China that "Looking at the sea in the city" and "Water pollution after rain". Taking Qingshan Lake drainage area of Nanchang City as an Example, this paper analyzes the present situation faced by the operation dispatching of urban waterlogging prevention system, researches the existing problems and causes, and then puts forward optimization principles and paths based on the results of numerical simulation of urban storms and floods. The primary conclusions are:First, "Dynamic control of Rainstorm in the whole process" is helpful for the "multi-objective" coordination in the operation of urban waterlogging prevention system. Secondly, under the numerical simulation of urban flood, the influence of different scenarios on urban water system can be predicted more scientifically, which is helpful to delimit the key objectives at different stages according to the principle of "grading and timeshare", and then determine the control timing and threshold of water level reasonably.
唐明, 廖颖娟, 占安安. “幸福河湖”背景下城市内涝防治系统的运行调度优化——以江西南昌市青山湖排涝片为例[J]. 中国防汛抗旱, 2021, 31(3): 20-25.
TANG Ming, LIAO Yingjuan, ZHAN An'an. Optimization of the operation dispatching of urban waterlogging prevention system under the background of “happy rivers”—A case study of Qingshan Lake drainage area in Nanchang City, Jiangxi Province. journal1, 2021, 31(3): 20-25.
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