
Numerical Research on the Flood Discharge Problem of Encroached Urban River Using Large Culvert
Yi LONG, Si-cheng TAN, Long-yang PAN, Hong-wei ZHOU, Jun-yi CAI, Jia-mei WANG
Numerical Research on the Flood Discharge Problem of Encroached Urban River Using Large Culvert
Based on the fact that Huayang section of Jinjiang River, a typical encroached urban river, is blocked and flood discharge can not be improved by conventional methods, this paper proposes using large-scale culvert for flood diversion. It establishes MIKE hydrodynamic numerical model based on river topography, simulates and analyzes the influence of culvert cross-section size, entrance position and inflow angle on culvert flood diversion flow, water level elevation and flow velocity. The results are of guiding significance to solve the problem of flood discharge in Huayang section of Jinjiang River and the control of urban encroachment river.
urban flood control / culvert / MIKE / numerical simulation {{custom_keyword}} /
Tab.1 Section size table of flood diversion culvert表1 分洪涵洞断面尺寸表 |
设计方案 | 宽/m | 高/m |
---|---|---|
方案1 | 15 | 6 |
方案2 | 18 | 6 |
方案3 | 20 | 6 |
方案4 | 15 | 8 |
方案5 | 18 | 8 |
方案6 | 20 | 8 |
Tab.2 Culvert entrance location schemes表2 涵洞入口位置方案 |
设计方案 | 入口位置(桩号) | 入流角/ (°) | 距伏龙桥距离/m |
---|---|---|---|
方案1 | 21+40 | 12 | 230 |
方案2 | 22+20 | 16 | 150 |
方案3 | 23+20 | 33 | 50 |
Tab.3 Flood condition table表3 洪水工况表 |
洪水组合类型 | 组合Qp /(m3·s-1) | 锦江Qp /(m3·s-1) | 江安河Qp /(m3·s-1) |
---|---|---|---|
锦江20年+江安河20年 | 1 660 | 1 220 | 440 |
锦江100年+江安河100年 | 2 310 | 1 700 | 610 |
锦江200年+江安河200年 | 2 580 | 1 900 | 680 |
Fig.9 Vector distribution of culvert inlet velocity under 100-year flood standard图9 100年洪水标准下方案1涵洞入口流速矢量分布图 |
Fig.10 Vector distribution of culvert inlet velocity under 100-year flood standard图10 100年洪水标准下方案2涵洞入口流速矢量分布图 |
Fig.11 Vector distribution of culvert inlet velocity under 100-year flood standard图11 100年洪水标准下方案3涵洞入口流速矢量分布图 |
Fig.12 Vector distribution of culvert inlet velocity under 200-year flood standard图12 200年洪水标准下方案1涵洞入口流速矢量分布图 |
Fig.13 Vector distribution of culvert inlet velocity under 200-year flood standard图13 200年洪水标准下方案2涵洞入口流速矢量分布图 |
1 |
孟庆佑,陈神云.城市内河防洪除涝的难点与解决途径初探[J].科学技术创新,2018(27):97-98.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
2 |
黄福云.探讨城市下水系统中防洪排涝体系的建设[J].价值工程,2019,38(24):66-67.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
3 |
胡盈惠.论快速城市化进程中的城市内涝治理[J].中国公共安全(学术版),2011(2):6-8.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
4 |
汉京超,俞士静,吕永鹏.城市排水防涝的管理性措施研究[J].城市道桥与防洪,2014(11):22-25,19-20.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
5 |
耿晓明,金红珍,陈运怀.东太湖流域城市防洪除涝的新问题及其对策分析[J].人民长江,2013,44(1):7-9.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
6 |
黄继新.排水隧洞在城市防洪工程中的应用[J].城市道桥与防洪,2020(7):168-170,20.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
7 |
刘家宏,夏霖,梅超,等.深隧排水系统在城市内涝防治中的作用分析[J].应用基础与工程科学学报,2019,27(2):252-263.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
8 |
张晓波,盛海峰.城市市政排水与区域排涝水动力耦合模型研究[J].人民长江,2015,46(18):15-19,47.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
9 |
张练,王晓晨,赵新华.基于排水模型的城区雨水径流削减潜力分析[J].中国农村水利水电,2015(4):38-41,46.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
10 |
刘斌玲.应用深隧解决宝安中心区防洪排涝及水环境问题研究[J].中国农村水利水电,2016(7):59-61.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
11 |
夏海,王红武,胡龙.深隧调蓄系统中入流竖井内部流场的数值模拟[J].中国给水排水,2019,35(1):123-126,133.
{{custom_citation.content}}
{{custom_citation.annotation}}
|
{{custom_ref.label}} |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
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