[1]刘鑫.东南沿海城市小流域排涝计算方法探讨[J].中国给水排水,2024,40(8):80-86.
　LIUXin.Discussion on Drainage Calculation Methods of Small Watersheds in Southeast Coastal Cities[J].China Water & Wastewater,2024,40(8):80-86.
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东南沿海城市小流域排涝计算方法探讨

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第40卷 期数: 2024年第8期 页码: 80-86 栏目: 出版日期: 2024-04-17
Title:
Discussion on Drainage Calculation Methods of Small Watersheds in Southeast Coastal Cities
作者:
刘鑫
（上海市政工程设计研究总院<集团>有限公司，上海 200092）
Author(s):
LIU　Xin
（Shanghai Municipal Engineering Design Institute Co. Ltd.， Shanghai 200092，China）
关键词:
排涝计算;  城市小流域;  东南沿海城市;  水量平衡法;  平均排除法;  河网水动力模型法
Keywords:
drainage calculation;  small urban watershed;  southeast coastal city;  water balance method;  average exclusion method;  river network hydrodynamic model method
摘要:
针对东南沿海城市小流域排涝出口少，排涝期出现抽排流量与河道过流能力不匹配的问题，总结了国内常用的排涝计算方法，结合区域特征提出了改进的水量平衡法，选择典型区域对各方法进行定量计算比较，并探讨其适用性。结果表明，平均排除法对水面率较低的城市化涝区适用性较弱；河网水动力模型法精度较高，但对资料要求很高且工作量大；改进的水量平衡法因考虑到泵站抽排规模与河道过流能力的匹配关系，与常规水量平衡法相比计算精度明显提高，计算成果与河网水动力模型法接近，计算相对简单，且具有较好的适用性。研究成果可为类似城市小流域的排涝计算提供参考。
Abstract:
This paper summarized the commonly-used drainage calculation methods in China, proposed a modified water balance method combined with regional characteristics, and compared the performance of each method quantitatively in typical regions to discuss its applicability, so as to solve the problems of few available drainage outlets and incompatibility between drainage flow and river flow capacity in small watersheds in southeast coastal cities. The average exclusion method was not suitable for urban drainage areas with low surface water region ratio. The river network hydrodynamic model method exhibited a higher accuracy, but this method highly relied on data acquisition and data volume. The modified water balance method considered the coordination between the pumping station flow and the river flow capacity, and significantly improved the calculation accuracy compared with the conventional water balance method. In addition, the calculation results were close to the river network hydrodynamic model method, and the calculation was relatively simple and showed good applicability. The results aim to provide reference for drainage calculation in similar small urban watersheds.
更新日期/Last Update: 2024-04-17