基于SWMM模型对镇江玉带河汇水区域的模拟分析

Simulation of Zhenjiang Yudai River Catchment Based on SWMM

当前满足生态景观要求的城市河道整治工程,其设计河道断面形式多样化、形状不规则,对河道水力计算的精度和细度提出了更高要求,采用传统的推理公式计算方法已难以适应复杂的河道水力计算。以镇江市海绵城市建设试点区玉带河流域为例,利用SWMM模拟玉带河汇水区域的汇流过程,并据此提出相应的河道整治措施,同时与传统推理法的计算结果进行对比。结果表明,SWMM模拟方法的计算结果更为合理、准确,对于优化城市河道整治设计有显著意义。

An urban river regulation project for meeting the requirements of the ecological landscape contains a river cross-section with diversified form and irregular shape, which imposed higher requirements on the calculation accuracy and fineness of the watercourse. The traditional inference calculation formula is inapplicable to the complex river hydraulic calculation. Taking Zhenjiang Yudai River basin （ a pilot of sponge city） as an example, the rainfall-runoff process of the river catchment was simulated using SWMM. The corresponding river regulation measures were proposed according to the simulation results which were compared with the results of the inference method. The results showed that the SWMM simulation results were more reasonable and accurate, which is of remarkable significance for optimizing the design of the urban river regulation.