LIZong-qiang,GUOHan-jun,SHUMin.Design of Large-diameter Initial Rainwater Storage Pipelines[J].China Water & Wastewater,2025,41(10):46-52.
大口径初雨调蓄管道工程设计
- Title:
- Design of Large-diameter Initial Rainwater Storage Pipelines
- 关键词:
- 初期雨水; 调蓄管道; 大口径; 冲洗清淤; 计算流体力学（CFD）技术
- Keywords:
- initial rainwater; storage pipeline; large-diameter; flushing and dredging; computational fluid dynamics (CFD) technique
- 摘要:
- 为进一步减少初期雨水径流污染及雨水泵站放江污染，近年来上海市大力推进初雨调蓄设施建设，并已取得阶段性成果。上海市中心城区建设用地较为紧张，在建成区建设初雨调蓄设施，其选址和建设型式成为工程设计的最大挑战。采用大口径调蓄管道可解决项目实施困难等问题，但也存在诸多建设和运维中的瓶颈和难点。以上海市某大口径初雨调蓄管道工程为例，设计规模11 300 m3，采用DN5 000调蓄管道，为工程的实施创造了条件，解决了大口径初雨调蓄管道冲洗清淤、进水预处理及除臭工艺设计难点，重点对调蓄管道水力冲洗清淤方式进行了比选论证，并采用计算流体力学（CFD）技术进行模拟分析，可为类似工程提供参考。
- Abstract:
- In recent years, Shanghai has actively promoted the construction of initial rainwater regulation and storage facilities to further mitigate the pollution caused by initial rainwater runoff and stormwater pumping stations, achieving phased outcomes. Construction land in the downtown area of Shanghai is relatively limited, and the site selection and construction format for initial rainwater storage facilities in urbanized areas present the most significant challenge in engineering design. Utilizing large-diameter storage pipelines can address issues such as project implementation challenges; however, numerous bottlenecks and difficulties remain in terms of construction, operation, and maintenance. The design capacity of an initial rainwater storage pipeline project in Shanghai is 11 300 m3, and the pipe with a diameter of DN5 000 is utilized. This approach facilitated the implementation of the project while addressing challenges in the process design for sediments flushing, influent pretreatment, and deodorization of the pipeline. This paper focused on the comparison and validation of the flushing and dredging methods for the pipelines, as well as the simulation analysis conducted using computational fluid dynamics (CFD) technique. These findings can serve as a reference for similar projects.
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