ZHUJie.Optimizing the Combined Construction Design of a Stormwater Pumping Station and Storage Tank within Limited Land Use Constraint[J].China Water & Wastewater,2024,40(14):73-78.
用地受限条件下雨水泵站及调蓄池合建设计优化
- Title:
- Optimizing the Combined Construction Design of a Stormwater Pumping Station and Storage Tank within Limited Land Use Constraint
- Keywords:
- stormwater pumping station; storage tank; limited land area; layered construction; energy?saving optimization; rectification measure
- 摘要:
- 为减缓暴雨造成的城市内涝以及控制径流污染对河道生态的影响，以上海浦东新区康桥路雨水泵站和控污调蓄池合建项目为例，针对泵站用地狭小、侧向进水、轨交18号线穿越用地等不利因素进行优化设计。通过优化泵站总平面布置，采用调蓄池、雨水泵站、设备用房上下叠建方式，在有限平面空间内合理布置各类吊装口、透气井、人员出入口；采用深度为73.70 m的地下连续墙隔断承压含水层，解决了与轨交18号线盾构最小净距为8 m的难题，保障轨交运营安全；针对调蓄池有效水深达7.5 m，在排空过程中静扬程变动大的问题，提出了排空泵变频运行的节能优化措施；基于计算流体力学对进水流态的数值模拟分析，采用设置横梁的整流技术措施来缓解侧向进水主流偏流问题，实现进水流态稳定、流量分布均匀。
- Abstract:
- In order to address urban waterlogging caused by heavy rain and control the impact of runoff pollution on river ecology, the design of the project of Kangqiao Road stormwater pumping station and pollution control and storage tank in Pudong New Area, Shanghai was optimized in the face of adverse factors such as limited land area for the pumping station, lateral water intake, and crossing the land of No.18 Rail Transit Line. By optimizing the overall layout of the pumping station, the storage tank, stormwater pumping station, and equipment room were positioned vertically. Various lifting port, ventilation well, and personnel entrances and exits were thoughtfully arranged within the confined spatial constraints to ensure efficient functionality. The underground diaphragm wall, with a depth of 73.70 m, was implemented to intercept the confined aquifer. This solution effectively addressed the challenge of maintaining a minimum clearance distance of 8 meters between the shield and No.18 Rail Transit Line, thereby ensuring the safe operation of rail transit. In response to the issue of significant variations in static head during the emptying process, caused by an effective water depth of 7.5 m in the storage tank, energy? saving optimization measures for variable frequency operation of the emptying pump were proposed. Through the utilization of CFD numerical simulation to analyze the inlet flow state and implementation of rectification measures such as setting a cross beam, the issue of lateral inflow mainstream deviation was mitigated, achieving stable inflow flow state and uniform flow distribution.
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