城市内涝水量平衡计算方法

针对当前内涝计算模型边界条件多、参数校正复杂、运算过程时间长等问题，提出一种基于水量平衡的城市内涝计算方法。以气象预报数据为输入，采用时段水量平衡法，以排水分区的总降水量、区域主干管网的排水能力为边界，建立积水预报模型，搭建城市内涝预警系统，并对系统在深圳市 2021 年 10 次较大降雨中的应用情况进行分析，结果表明：采用水量平衡计算方法进行内涝模拟的准确率达 85% 左右，能较好地预测城市内涝情况，为城市大尺度的内涝预警预报提供新的建设思路。

Calculation method of urban waterlogging based on water balance

Aiming at the problems of multiple boundary conditions, complex parameter correction, and long calculation time in current waterlogging calculation models, propose a method for calculating urban waterlogging based on water balance. Using meteorological forecasting as input and using the time period water balance method, a waterlogging model is constructed with the total precipitation of the drainage zone and the drainage capacity of the regional main pipeline network as the boundary. Building an urban waterlogging warning system based on these, and analyzing the application of the system in 10 heavy rainfall events in Shenzhen in 2021.The results show that: The accuracy of waterlogging simulation base on water balance can reach about 85%, which can better predict the urban waterlogging situation and provide a new construction idea for large-scale urban waterlogging early warning and prediction.