| 堰塞坝慢顶溃决流量过程数值模拟 |
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| 引用本文： | 黄金池. 堰塞坝慢顶溃决流量过程数值模拟[J]. 水利学报, 2008, 39(Z2) |
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| 作者姓名： | 黄金池 |
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| 作者单位： | 中国水利水电科学研究院 |
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| 摘 要： | 堰塞坝的溃口流量过程是堰塞湖应急处置与风险管理的关键问题，采用数值模型计算分析堰塞坝溃口流量过程的关键是正确模拟溃口形成机理。本文在前人工作基础上，根据一般滑坡堰塞坝特点和实际观测到的堰塞坝溃口发展规律建立了一个溃口扩展模式，将溃口扩展过程归纳为三种主要表现形式，采用试验资料建立的高强度泥沙冲刷计算公式将溃口冲刷的三种表现方式联系在一起，建立堰塞坝逐渐溃决数学模型，利用实测溃坝资料验证了模型的可靠性。考虑到溃坝洪水计算的极大不确定性，对计算模型中一些关键参数给定一定变幅范围研究了这些参数对计算结果的影响。
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| 关 键 词： | 堰塞湖 溃决 数学模型 敏感性分析 |
| 收稿时间： | 2008-08-01 |
| 修稿时间： | 2008-08-20 |
Calculation of dam break flow process of natural dam |
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| Huang Jinchi. Calculation of dam break flow process of natural dam[J]. Journal of Hydraulic Engineering, 2008, 39(Z2) |
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| Authors: | Huang Jinchi |
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| Affiliation: | China Institute of Water Resources and Hydropower Research |
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| Abstract: | Break flow discharge process of a natural dam is the key parameter for the emergency management of the flood risk reduction. Based on the work of lots of previous research, this paper presents a model to simulate the dam break process of the natural dam. The whole broken process of a natural dam is simulated with three basic modes-bed erosion, bank erosion and upward erosion of back face of a dam. Some observed data is used to verify the model and the correctness is satisfied. Owing to the highly uncertainty of the broken process of a natural dam, some impact factors is analyzed with the model. |
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| Keywords: | Natural dam dambreak numerical model sensitive analysis |
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