[1]王文亮,阮佳悦,苏成庆,等.雨水生物滞留设施排空时间评估方法[J].中国给水排水,2025,41(6):53-56.
　WANGWen-liang,RUANJia-yue,SUCheng-qing,et al.Methodology for Assessing Emptying Time of Stormwater Bioretention Facilities[J].China Water & Wastewater,2025,41(6):53-56.
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雨水生物滞留设施排空时间评估方法

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第6期 页码: 53-56 栏目: 出版日期: 2025-03-17
Title:
Methodology for Assessing Emptying Time of Stormwater Bioretention Facilities
作者:
王文亮1， 阮佳悦1， 苏成庆1， 郭纯园2， 李俊奇1， 任自强3， 李运杰4
（1.北京建筑大学 城市雨水系统与水环境教育部重点实验室，北京 100044；2.科罗拉多大学，美国；3.芜湖市排水管理处，安徽 芜湖 241005；4.上海市政工程设计研究总院<集团>有限公司，上海 200092）
Author(s):
WANG　Wen-liang1， RUAN　Jia-yue1， SU　Cheng-qing1， GUO　Chwenyuan2， LI　Jun-qi1， REN　Zi-qiang3， LI　Yun-jie4
（1. Key Laboratory of Urban Stormwater System and Water Environment ，Beijing University of Civil Engineering and Architecture， Beijing 100044， China； 2. University of Colorado， The United States of America； 3. Wuhu City Drainage Management Office， Wuhu 241005， China； 4. Shanghai Municipal Engineering Design Institute Co. Ltd.， Shanghai 200092， China）
关键词:
雨水生物滞留设施;  排空时间;  表层;  结构层
Keywords:
stormwater bioretention facility;  emptying time;  surface ponding layer;  structural layer
摘要:
排空时间是雨水生物滞留设施的关键设计参数和运行参数，可分为表层排空时间和结构层排空时间。提出了恒定水头和变水头条件下排空时间的计算方法，恒定水头下，可根据底部排水管过流能力确定具体计算公式；变水头下，计算得到排空时间后，可进一步计算生物滞留设施底部排水管的流量系数，作为SWMM模型LID模块的输入参数。通过该方法可评估生物滞留设施的实际运行情况，确定土壤介质、粗砂/级配碎石需满足的入渗性能。
Abstract:
Emptying time constitutes a critical design and operational parameter for stormwater bioretention facilities, and it can be categorized into surface ponding layer emptying time and structural layer emptying time. This paper proposed a calculation method for emptying time under both constant head and variable head conditions. The specific formula could be derived based on the flow capacity of the bottom drain under constant head conditions. Under a variable head, after determining the emptying time, the flow coefficient of the bottom drain of the bioretention facility could be further calculated and used as an input parameter for the low impact development (LID) module in SWMM. This method is capable of assessing the operational effectiveness of bioretention facilities and determining the infiltration performance of soil media as well as coarse sand and graded gravel.
更新日期/Last Update: 2025-03-17