| 水力学耦合水文学模型在沮漳河河溶水文站洪水水位预报的应用研究 |
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| 作者姓名： | 李永凯 王拓 肖晒 |
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| 作者单位： | 宜昌市水文与水资源勘测局;三峡大学水利与环境学院 |
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| 基金项目： | 国家自然科学基金(51409152)。 |
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| 摘 要： | 为解决目前在变动回水影响下采用传统水文模型进行水文站水位预报面临的困难,本文研究采用水文模型与水力学模型相结合的方法进行洪峰水位预报,以沮漳河河溶水文站洪水水位预报为例,从河溶水文断面到鸭子口断面运用水力学模型,采用常糙率和变糙率两种方法进行洪水水位预报,结果表明使用变糙率方法预报精度更高。其结果对沮漳河流域水文预报具有一定的指导意义。
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| 关 键 词： | 水力学模型 常糙率 变糙率 洪水预报 |
Hydraulics coupling hydrological model at Juzhang River Herong hydrological station application of flood water level forecast |
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| Authors: | LI Yongkai WANG Tuo XIAO Shai |
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| Affiliation: | (Yichang Hydrology and Water Resources Survey Bureau,Yichang 443003,China;China Three Gorges University School of Water Conservancy and Environment,Yichang 443003,China) |
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| Abstract: | In order to solve the difficulty of using traditional hydrological model to forecast the water level of hydrological station under the influence of fluctuating backwater.This paper studies the method of combining hydrological model and hydraulic model to forecast flood peak level.Taking flood level forecast of Juzhang River Herong Hydrological Station as an example,hydraulic model is applied from Herong Hydrological Section to Yazikou Section,and two methods of constant roughness and variable roughness are used to forecast flood level.The results show that the prediction accuracy is higher by using the variable roughness method.The results have certain guiding significance for hydrological forecasting in Juzhang River Basin. |
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| Keywords: | hydraulics model constant roughness varying roughness flood forecasting |
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