| 基于洪水演进数值模拟的溃坝危害性快速评估 |
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| 引用本文： | 谢俊举,李亚琦.基于洪水演进数值模拟的溃坝危害性快速评估[J].灾害学,2011,26(2):31-34. |
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| 作者姓名： | 谢俊举 李亚琦 |
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| 作者单位： | 中国地震局地球物理研究所,北京,100081 |
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| 基金项目： | 科技支撑计划(2006BAC13B03); 国家重点基础研究发展计划(2007CB714200) |
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| 摘 要： | 采用部分溃坝模型与堰流相交算法计算溃坝最大流量,并基于四次抛物线概化方法得到溃坝洪水的流量过程线;利用洪峰展平法将洪水波概化为三角形,对洪水演进过程进行模拟,分析溃口宽度和溃口形态对洪水演进过程的影响;研究考虑不同溃坝条件下对溃坝洪水的到时、最大流量、水深和洪水历时等洪水演进的主要参数的快速估算方法,以实现对地震可能引发不同溃坝事件危害性的快速评估。
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| 关 键 词： | 溃坝洪水 地震应急 洪水演进 溃坝历时 数值模拟 |
Rapid Evaluation of Dam-break Hazard Based on Numerical Simulation of Flood-routing |
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| Xie Junju,Li Yaqi.Rapid Evaluation of Dam-break Hazard Based on Numerical Simulation of Flood-routing[J].Journal of Catastrophology,2011,26(2):31-34. |
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| Authors: | Xie Junju Li Yaqi |
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| Institution: | Xie Junju and Li Yaqi (Institute of Geophysics,China Earthquake Administration,Bejing 100081,China) |
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| Abstract: | Maximum discharge of dam-break is calculated by algorithm of dam-break model intersected with weir flow.Discharge hydrograph of dam-break flood is got based on four parabola generalizations.The flood wave is generalized as a triangle with flood peak flattening method to simulate flood-routing process and analyze effects of dam breach width and form on the process.A rapid estimation method is studied for significant flood-routing indexes as arriving time,maximum discharge,depth,duration,etc of flood under th... |
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| Keywords: | dam-break flood earthquake emergency response flood-routing dam-break duration numerical simulation |
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