客水汇入对城区内涝风险的影响及优化方案

崔瀚武; 杜晓丽; 赵敏; 徐瑶; 张文平; 刘家铭

doi:10.13205/j.hjgc.202401020

客水汇入对城区内涝风险的影响及优化方案

doi: 10.13205/j.hjgc.202401020

崔瀚武¹,
杜晓丽^1,2, ,,
赵敏³,
徐瑶⁴,
张文平⁵,
刘家铭¹

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. 北京节能减排与城乡可持续发展省部共建协同创新中心, 北京 100044;
3. 山东省枣庄市滕州市河湖长制事务中心, 山东枣庄 277599;
4. 山东省枣庄市滕州市水务服务中心, 山东枣庄 277599;
5. 山东省滕州市房地产服务中心, 山东枣庄 277599

基金项目:

北京建筑大学金字塔人才培养工程项目(JDJQ20200302)；北京市属高等学校高水平科研创新团队建设支持计划项目(BPHR20220108)

详细信息

作者简介:
崔瀚武(1999-),男,在读硕士研究生,主要研究方向为城市水环境科学与系统工程。18510726242@163.com

通讯作者:
杜晓丽(1980-),女,教授,博士,主要从事城市雨洪控制利用研究。duxiaoli@bucea.edu.cn

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- 文章访问数: 90
- HTML全文浏览量: 9
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2023-09-27
- 网络出版日期: 2024-04-29

IMPACT OF EXTERNAL WATER INFLOW ON FLOODING RISK IN URBAN AREAS AND OPTIMIZATION SCHEMES

1. Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
2. Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
3. Tengzhou River and Lake Management Affairs Center, Zaozhuang 277599, China;
4. Tengzhou Water Service Center, Zaozhuang 277599, China;
5. Tengzhou Real Estate Service Center, Zaozhuang 277599, China

摘要

摘要: 为评估建成区外客水汇入对山东省某市城区管网排水压力的影响,基于InfoWorks ICM构建一维、二维耦合雨洪模型,在不同模拟条件下分析城区管网排水能力及内涝积水情况,并基于模型结果提出优化方案。结果表明:建成区外客水汇入是导致该市主城区管网超负荷、节点溢流及内涝积水的主要原因;在2 a、3 a一遇2 h设计降雨下,客水汇入时超过1/2管道超负荷运行,溢流节点分别占1.38%和3.1%;在20 a、30 a一遇24 h设计降雨下,淹水面积占城区研究区域面积的35.9%及38.7%,其中9.60%及9.94%为高风险积水区;综合考虑经济性及有效性,采用建设地表方涵、排洪沟的方式截流地表径流客水的方式以缓解城区管网排水压力。经验证,优化方案能有效削减客水汇入对城区内涝积水的影响,对高风险积水区面积削减最明显。在20 a、30 a一遇24 h设计降雨下,研究区域高风险积水区面积优化后比优化前削减了75%、71%,最大积水深度下降至1 m以下。
- 客水 /
- 排水能力 /
- 内涝风险 /
- InfoWorks ICM模型
Abstract: To evaluate the impact of the external water inflow on the urban drainage pressure in a city in Shandong Province, a one-dimensional and two-dimensional combined model was established on InfoWorks ICM to analyze the drainage capacity and flooding distribution in the urban under different rainfall conditions. Then the optimization schemes were proposed. The results showed that the inflow of external water was the main reason for the drainage pipe network overloading, nodes overflowing, and flooding in the main urban area of the city. More than half of the pipes were overloaded under the design rainfall recurrence of 2 a and 3 a with a duration of 2 h, and the overflow nodes accounted for 1.38% and 3.1%, respectively. The proportion of flooded areas was 35.9% and 38.7% under the design rainfall recurrence of 20 a and 30 a with a duration of 24 h, respectively, among which 9.60% and 9.94% of the area were posted at high risk. Considering both economy and effectiveness, the construction of surface culverts and flood discharge ditches was adopted to intercept surface runoff and alleviate the drainage pressure of urban pipeline networks. The optimized plan can effectively reduce the flooded areas in urban under external water inflow, especially for high-risk areas. The high-risk area was reduced by 75% and 71% under the design rainfall recurrence of 20 a and 30 a with a duration of 24 h, respectively, and the maximum flooding depth decreased to 1 meter below.
- external water /
- drainage capacity /
- flooding risk /
- InfoWorks ICM model

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