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首页> 外文期刊>Journal of Hydrology >Exploring real-time control of stormwater systems for mitigating flood risk due to sea level rise
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Exploring real-time control of stormwater systems for mitigating flood risk due to sea level rise

机译：探讨雨水系统的实时控制，以减轻海拔洪水风险

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Low-lying, low-relief coastal cities have seen increased flooding due to climate change. In these cities, stormwater pipe outlets can be inundated by coastal waters at high tide or from storm surge, making drainage impossible. The objective of this research is to assess the utility of model predictive control (MPC) of stormwater actuators to reduce flooding in a coastal urban setting made worse by sea level rise. The stormwater system and the control scenarios are simulated using the United States Environmental Protection Agency Storm Water Management Model (SWMM5) coupled with a Python library, swmm_mpc. The study area is Norfolk, Virginia, USA, a city which is particularly vulnerable to coastal flooding. A simulated 2-year 12-h design storm and sea level rise scenarios up to 3.5 ft are applied to the model for three control scenarios: 1) a passive system, 2) a passive system with a tide gate (backflow preventer), and 3) a tide gate and three actuators (a pump, a valve, and an inflatable dam) controlled through MPC. Flooding in the passive system reached a tipping point and increased dramatically after a sea level rise of 1.6 ft. The addition of a tide gate greatly mitigated this increase in flooding. MPC further reduced overall flooding with an average effective percent reduction of 32%. The rate of the increase in flooding was significantly smaller with MPC than without. MPC also reduced maximum node flood volume by an average of 52% for sea level increases of 2.0 ft and above. In addition to the installation of a tide gate, our results suggest that the use of actuators controlled by MPC could significantly reduce overall flood volumes and reduce flood severity at individual nodes in coastal cities.
机译：低洼的低浮雕沿海城市因气候变化而增加了洪水。在这些城市中，雨水管道可以通过沿海水域淹没在高潮或风暴浪涌，使排水不可能。本研究的目的是评估模型预测控制（MPC）雨水执行器的效用，以减少海平面上升沿海城市环境中的洪水。雨水系统和控制方案使用美国环境保护局雨水管理模型（SWMM5）与Python库，SWMM_MPC耦合。研究区是诺福克，弗吉尼亚州，美国，一个特别容易受到沿海洪水的城市。模拟的2年12-H设计风暴和海平面上升情景高达3.5英尺的三种控制场景模型：1）被动系统，2）具有潮汐门（回流防止器）的被动系统，和3）通过MPC控制的潮汐栅极和三个致动器（泵，阀，阀和充气坝）。被动系统中的洪水达到了倾斜点，在海平面上升到1.6英尺后大幅增加。添加潮汐门的增加大大减轻了这种增加的洪水。 MPC进一步减少了整体洪水，平均有效减少了32％。 MPC洪水的增加率明显小于没有。 MPC还将最大节点洪水量降低，平均海拔2.0英尺及以上的海平面增加52％。除了安装潮汐门外，我们的结果表明，使用MPC控制的执行器可能会显着降低整体洪水卷并减少沿海城市中各个节点的洪水严重程度。

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