典型LID设施多尺度径流调控效应研究

廖如婷; 徐宗学; 叶陈雷; 舒心怡; 黄亦轩; 贾书惠

doi:10.13928/j.cnki.wrahe.2025.03.005

水利水电技术（中英文） ›› 2025, Vol. 56 ›› Issue (3) : 61 -75. DOI: 10.13928/j.cnki.wrahe.2025.03.005

城市防洪排涝专栏

典型LID设施多尺度径流调控效应研究

廖如婷 ¹^,² ,
徐宗学 ¹^,² ,
叶陈雷 ¹^,² ,
舒心怡 ¹^,² ,
黄亦轩 ¹^,² ,
贾书惠 ³

作者信息 +

Study on the runoff regulation effects of typical low impact development facilities in multiple scale regions

Ruting LIAO ¹^,² ,
Zongxue XU ¹^,² ,
Chenlei YE ¹^,² ,
Xinyi SHU ¹^,² ,
Yixuan HUANG ¹^,² ,
Shuhui JIA ³

Author information +

文章历史 +

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摘要

【目的】为明晰海绵城市在缓解城市内涝中的作用，以山西省晋城市金村起步区为研究对象，深入分析LID设施不同空间尺度径流及内涝调控效应。【方法】通过构建SWMM与InfoWorks ICM二维模块耦合的城市暴雨内涝模型，模拟多种暴雨情景和LID布设方案下地块、排水区、区域降雨径流过程，分析其产汇流和内涝淹没特征。【结果】LID设施能有效降低径流峰值、削减径流总量、加快径流消退，减少溢流节点和超载管段，缩减内涝面积、降低内涝水深。不同空间尺度下LID设施调控效果差异不大，都在1~5 a重现期间表现良好，1 a重现期降雨下LID设施最大面积布设方案可削减75%以上地表径流。【结论】LID设施应对短重现期暴雨效果良好，对长重现期暴雨内涝调控能力有限，尤其对严重内涝点调控能力不足。扩大LID设施规模可有效提高其径流调控能力。

Abstract

[Objective] In order to investigate the role of sponge cities in mitigating urban waterlogging by selecting the Jincun development area of Jincheng City as a research area and analyzing the regulation effects of low impact development(LID) facilities on runoff and waterlogging at different spatial scales. [Methods] A coupled urban stormwater and waterlogging model was developed by integrating the Storm Water Management Model(SWMM) and the two-dimensional module of InfoWorks ICM. The model simulated various storm scenarios and LID layout schemes to analyze rainfall-runoff processes and waterlogging characteristics in plots, drainage zones, and regions. [Results] The findings indicated that LID facilities effectively reduced runoff peak values, decreased total runoff, accelerated runoff recession, and mitigated overflow nodes and overloaded pipe segments. They also significantly reduced areas affected by waterlogging and lowered water depths. The regulation effect of LID facilities showed minor variation across different spatial scales and performed well within a 1 to 5-year recurrence period. Specifically, under 1-year recurrence period rainfall, the largest LID layout scheme reduced surface runoff by more than 75%. [Conclusion] LID facilities demonstrate strong efficacy for short-recurrence-period storms but have limited capacity for long-recurrence-period waterlogging control, particularly at severe waterlogging points. Expanding the scale of LID facilities can substantially enhance their runoff regulation capacity.