平原河網城市雨水排水系統彈性評價

王紅武; 閆明; 翟月嬌; 戴曉虎

doi:10.13205/j.hjgc.202312007

平原河網城市雨水排水系統彈性評價

doi: 10.13205/j.hjgc.202312007

同濟大學環境科學與工程學院城市污染控制國家工程研究中心水利部長三角城鎮供水節水及水環境治理重點實驗室, 上海 200082

基金項目:

國家重點研發計劃項目(2021YFC3201300)

國家重點研發計劃項目(2021YFC3201500)

詳細信息

作者簡介:
王紅武(1970-),女,博士,副教授。wanghongwu@#edu.cn

通訊作者:
王紅武(1970-),女,博士,副教授。wanghongwu@#edu.cn

計量
- 文章訪問數: 11
- HTML全文瀏覽量: 1
- PDF下載量: 2
- 被引次數: 0
出版歷程
- 收稿日期: 2023-10-24
- 網絡出版日期: 2024-03-08

RESILIENCE EVALUATION OF URBAN RAINWATER DRAINAGE SYSTEM IN PLAIN RIVER NETWORK AREA

Key Laboratory of Urban Water Supply, Water Saving and Water Environment Governance in the Yangtze River Delta of Ministry of Water Resources, National Engineering Research Center for Urban Pollution Control, College of Environmental Science and Engineering, Tongji University, Shanghai 200082, China

摘要

摘要: 隨著城市化高速發展,城市排水和內澇的壓力日益增大,增強雨水排水系統的"彈性"是城市發展的方向。選擇長江三角洲某平原河網城市的某片區為研究對象,基于率定的SWMM模型和已有的研究,從系統內澇積水量和持續時間2個方面的彈性出發,建立雨水排水系統彈性模型。在不同降雨情境下運行模型,分析研究區域的雨水排水系統彈性。結果表明,隨著降雨強度增加,系統彈性逐漸減小;系統彈性值和降雨強度之間呈線性負相關。在低重現期條件下,隨著降雨強度的增大,彈性值下降幅度較小。重現期越大,系統彈性值下降速率越快。在同一降雨重現期下,隨著不透水地面比例的增加,系統彈性逐漸減小。在高重現期和高不透水地面比例情況下,系統彈性值較低;在10年一遇降雨條件下,區域不透水地面比例增加,系統彈性值下降速度最快。將彈性理念引入城市雨水排水系統中,建立反映系統在應對外界環境變化和災害時的彈性能力評價體系,有助于全面了解雨水排水系統性能,對于雨水排水系統的優化改造以及城市風險管理具有重要意義。
- 平原河網城市 /
- 雨水排水系統 /
- 彈性評價 /
- 降雨強度 /
- 不透水地面
Abstract: With the rapid development of urbanization, the pressure of urban drainage and the occurrence of waterlogging is increasing, and enhancing the "resilience" of rainwater drainage systems is an urgent need of urban development. This study selected a certain area of a plain river network city in the Yangtze River Delta as the research object. Based on the calibrated SWMM model and the existing research result, a resilience evaluation model of the rainwater drainage system was established from two aspects: the amount of waterlogging, and the duration of the system. We ran the model under different rainfall scenarios to analyze the resilience of the rainwater drainage system in the study area. The results show that as the rainfall intensity increases, the system resilience gradually decreases,which means that there is a negatiue linear correlation between the system resilience value and the increase in rainfall intensity. Under the conditions of low recurrence period, the decrease in resilient value is relatively smaller with the increase of rainfall intensity. The larger the recurrence period, the faster the decrease rate of system resilient value. Under the same rainfall recurrence period, as the proportion of impermeable ground increases, the system resilience gradually decreases. In the case of high recurrence period and high proportion of impermeable ground, the system resilient value is relatively lower; under the condition of rainfall with a return period of 10 years, the proportion of impermeable ground in the region increases, and the system's resilient value decreases the fastest. Introducing the concept of resilience into urban rainwater drainage systems and establishing an evaluation system that reflects the resilience of the system in response to external environmental changes and disasters can help comprehensively understand the performance of rainwater drainage systems. It is of great significance for the transformation and optimization of rainwater drainage systems and helpful for urban risk management.
- cities in plain river network area /
- urban rainwater drainage system /
- resilience evaluation /
- rainfall intensity /
- impervious surface

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