多源洪水耦合模型在防洪保护区洪水分析中的应用

发布时间：2018-05-28 01:04

本文选题：防洪保护区 + 多源洪水　；参考：《水利水运工程学报》2016年05期

【摘要】：针对防洪保护区单一洪水风险分析的不足,以一、二维非恒定流基本控制方程为理论基础,采用有限体积法对网格进行离散求解,建立溃堤洪水和暴雨多源洪水耦合的数学模型。在一、二维模型的链接处选用堰流公式实现河槽与保护区水流的实时交互,借助干湿水深理论对模型进行优化,利用遥感影像解译处理保护区内复杂地形条件下糙率对洪水演进的影响,概化处理区域内道路和过水涵洞对洪水的阻水或导水作用,并利用历史实测洪水资料进行模型验证。将验证后的模型应用于淮河干流凤台段防洪保护区多源洪水运动耦合模拟,分析了单一洪水与多源洪水对防洪保护区的损失比较结果,说明该区域受暴雨内涝影响较为严重。
[Abstract]:In order to solve the problem of single flood risk analysis in flood protection area, the finite volume method is used to solve the problem based on the basic control equations of one and two dimensional unsteady flow. A mathematical model of the coupling of embankment flood and rainstorm flood is established. The Weir formula is used to realize the real-time interaction between channel and protected area at the link of the first and two-dimensional models, and the model is optimized by the theory of dry-wet water depth. The effects of roughness on flood routing under complex topographic conditions in protected areas are interpreted by remote sensing images, and the effects of road and culvert on flood resistance or diversion are generalized, and the model is verified by historical measured flood data. The verified model is applied to the coupled simulation of multi-source flood movement in the Fengtai section of the Huaihe River main stream. The results of the comparison between the single flood and the multi-source flood on the flood protection area show that the area is seriously affected by the rainstorm waterlogging.
【作者单位】：天津大学水利工程仿真与安全国家重点实验室;天津大学前沿技术研究院有限公司;
【基金】：国家自然科学基金资助项目(51209158) 高等学校学科创新引智计划资助项目(B14012)
【分类号】：TV122

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