[1]许文斌,李益飞,李莎,等.适用于南方城市排水防涝能力评估的暴雨雨型[J].中国给水排水,2023,39(23):133-138.
　XUWen-bin,LIYi-fei,LISha,et al.Rainstorm Pattern Suitable for Evaluation of Rainwater Drainage and Waterlogging Control Ability in Southern Cities[J].China Water & Wastewater,2023,39(23):133-138.
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适用于南方城市排水防涝能力评估的暴雨雨型

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第39卷 期数: 2023年第23期 页码: 133-138 栏目: 出版日期: 2023-12-01
Title:
Rainstorm Pattern Suitable for Evaluation of Rainwater Drainage and Waterlogging Control Ability in Southern Cities
作者:
许文斌1， 李益飞1， 李莎2， 姜智怀3， 张玉浩1， 尹小斌1， 占龙飞3
（1.南昌市城市规划设计研究总院集团有限公司，江西 南昌 330038；2.重庆纵横工程设计有限公司，重庆 401120；3.江西省气候中心，江西 南昌 330006）
Author(s):
XU　Wen-bin1， LI　Yi-fei1， LI　Sha2， JIANG　Zhi-huai3， ZHANG　Yu-hao1， YIN　Xiao-bin1， ZHAN　Long-fei3
（1. Nanchang Urban Planning ＆ Design Institute， Nanchang 330038， China； 2. Chongqing Zongheng Engineering Design Co. Ltd.， Chongqing 401120， China； 3. Jiangxi Climate Center， Nanchang 330006， China）
关键词:
南方城市;  长历时雨型;  复合雨型;  暴雨分区;  聚类分析
Keywords:
southern cities;  long-duration rainfall pattern;  synthetic rainfall pattern;  rainstorm zone;  cluster analysis
摘要:
我国南方城市汛期持续时间长、排水受河湖水系顶托影响大，对长历时雨型和复合雨型进行研究是十分必要的，为此，以南昌市为例开展了相关研究。首先，采用泰森多边形创建法、自然断点分级法和雨量插值PRISM法将南昌市划分成4个暴雨分区。然后，采用聚类分析法对长历时降雨进行了研究，结果表明，南昌市长历时降雨有明显单类别的聚集特征，各分区单类聚集特征占比分别高达77.3%、74.0%、72.2%、74.2%，在24 h长历时暴雨雨型中，各分区均有雨峰在前、中部平缓、尾部爬高的特征。另外，基于客观需求，开展了复合雨型的相关研究，结果表明，南昌市各降雨分区复合雨型以单峰雨型为主，即使在极端短历时暴雨前出现过双峰或多峰，但出现场次极少，仅为1~2次。将各设计降雨重现期下的芝加哥雨型与聚类分析后截取的前22 h雨型进行重组，可以得到不同重现期下的22 h+2 h复合雨型。
Abstract:
The flood season of cities in Southern China lasts for a long time and the rainwater drainage is greatly affected by the backwater of river and lake system, making it is necessary to investigate the long-duration rainfall pattern and synthetic rainfall pattern. Therefore, a case study was carried out in Nanchang. Firstly, Nanchang City was divided into four rainstorm zones by Thiessen polygon analysis, natural breakpoint classification method and PRISM. Then, the long-duration rainfall was investigated by cluster analysis. The long-duration rainfall in Nanchang City demonstrated obvious single cluster characteristics, and the proportion of single cluster in each zone was as high as 77.3%, 74.0%, 72.2% and 74.2%, respectively. The 24-hour long-duration rainstorm pattern of each zone had the characteristic of rainfall peak in the front, gentle in the middle and rising at the tail. In addition, the related research of synthetic rainfall pattern was carried out based on the objective needs. In Nanchang, the synthetic rainfall pattern in each rainstorm zone was mainly single-peak rainfall pattern. Even if there were double or multiple peaks before extremely short-duration rainstorm, the frequency of occurrence was only 1-2 times. The 22-hour+2-hour synthetic rainfall pattern with different return periods was obtained by recombining the Chicago rainfall pattern with the first 22-hour rainfall pattern intercepted from actual rainfall sequence after cluster analysis.
更新日期/Last Update: 2023-12-01