【摘要】 采用排水模型软件Infoworks ICM评价海绵城市建设效果已经成为行业趋势，然而大部分从业者仅关注软件的使用，忽视LID的模拟原理，未关注到可能存在的模拟误差。阐述两种LID模拟方法的原理，并分析由于子汇水区重新分割带来的模拟误差。以汕头市某公园的海绵改造项目为例，构建ICM海绵模型，推荐采用LID设施占据整个子汇水区的方法评估典型年降雨条件下的海绵建设效果，结果表明，LID设施能在源头有效控制雨水径流和污染，为后续海绵建模提供参考和经验。更多还原

【Abstract】 Using drainage model software Infoworks ICM to evaluate the effect of spongy city construction has become an industry trend. However, most engineers only focus on the use of the software, ignoring the simulation theory of LID controls, and pay no attention to the possible simulation errors. The principle of two LID simulation methods was described, and the simulation errors due to subcatchment re-segmentation were analyzed. Taking the sponge reconstrution project simulated by Infoworks ICM software of a park in Shantou city as an example, it was recommended to use the method of LID facilities occupying the entire subcatchment to evaluate the effect of sponge city construction under typical annual rainfall condition, the result showed that LID controls can effectively control stormwater runoff and pollution at the source, so as to provide reference for subsequent sponge city modeling.更多还原