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首页> 外文期刊>Journal of Environmental Management >A nonstructural flood prevention measure for mitigating urban inundation impacts along with river flooding effects
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A nonstructural flood prevention measure for mitigating urban inundation impacts along with river flooding effects

机译：一种非结构性的防洪措施，用于缓解城市淹没影响和河流洪水的影响

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摘要

In recent decades, urban developments along rivers have experienced high flooding risks, elevated by increasing urbanization. Due to the expansion of urban areas, flood mitigation strategies must rely on nonstructural flood management policies. This study evaluated the impacts of pluvial floods considering fluvial flooding effects through field surveys and numerical model simulations. Nonstructural flood protection measures are provided by establishing warning water levels based on variant scenario simulations. The results reveal that the aggravated drainage system overflow induced by elevated river water is significant when considering river flooding effects. As a result, current drainage systems have failed to meet the designed flood protection standards, indicating the need to produce potential inundation maps and to establish warning water levels. To prevent the main evacuation route of each settlement from being blocked due to flooding, the proposed warning water levels support timely and effective evacuations. Public community centers and schools in noninundation areas near settlements were identified as possible shelters based on the proposed warning water levels and inundation maps. We conclude that although the riverside areas without dike protection could sustain natural environments and landscapes, they must incorporate nonstructural flood protection measures. At the same time, it must be considered that river flood levels may reduce urban drainage capacity.
机译：在最近的几十年中，随着城市化进程的加快，沿河的城市发展遭受了洪水泛滥的威胁。由于城市面积的扩大，防洪战略必须依靠非结构性防洪管理政策。这项研究通过现场调查和数值模型模拟评估了考虑河流洪水影响的小洪水的影响。通过基于变体情景模拟确定警告水位来提供非结构性防洪措施。结果表明，在考虑河流洪水影响时，由升高的河水引起的加剧的排水系统溢流具有重要意义。结果，当前的排水系统未能达到设计的防洪标准，这表明需要制作潜在的淹没图和建立预警水位。为防止每个住区的主要疏散路线因洪水而被阻塞，建议的警告水位支持及时有效的疏散。根据拟议的警告水位和淹没图，将定居点附近非淹没地区的公共社区中心和学校确定为可能的避难所。我们得出的结论是，尽管没有堤防保护的河岸地区可以维持自然环境和景观，但它们必须纳入非结构性防洪措施。同时，必须考虑到河流洪水水位可能会降低城市排水能力。

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