| 黄河干流白银市水川段水面线计算方法对比分析 |
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| 作者姓名： | 杨亮亮 |
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| 作者单位： | 广晟昊兴勘测设计有限公司甘肃分公司 |
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| 摘 要： | 为克服能量方程逐段试算方法在河道水面线计算上存在的不足与局限,本文以黄河干流白银市水川段为例,采用二维水动力数值计算模型,对4种洪水频率工况下黄河干流白银市段的水面线高程进行计算,并将二维数值计算结果与能量方程计算结果进行复核和评价。经计算可知两种计算方法在计算结果上存在偏差,能量方程在河道水面线计算上是一种近似成果,而二维数值计算能够更加真实反映河道的实际情况,因此在水面线计算时推荐二维数值计算方法。
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| 关 键 词： | 黄河白银段 逐段试算法 水面线 二维水动力数值模型 研究 |
Comparative analysis of calculation methods of water surface line in Shuichuan section of the main stream of the Yellow River in Baiyin City |
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| Authors: | YANG Liangliang |
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| Affiliation: | (Gansu Branch of Guangsheng Haoxing Survey and Design Co.,Ltd.,Lanzhou 730000,China) |
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| Abstract: | In order to overcome the shortcomings and limitations of the energy equation trial calculation method in the calculation of river water surface line,this paper takes Shuichuan section of the Yellow River in Baiyin City as an example,and calculates the water surface line elevation of Baiyin section of the Yellow River under 4 kinds of different flood frequency conditions,and rechecks and evaluates the two-dimensional numerical calculation results and the energy equation calculation results.Through calculation,it can be seen that there are deviations between the two calculation methods.The energy equation is an approximate result in the calculation of river water surface line,while the two-dimensional numerical calculation can reflect the actual situation of the river more truly.Therefore,the two-dimensional numerical calculation method is recommended in the calculation of water surface line. |
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| Keywords: | Shuichuan section of the Yellow River in Baiyin City trial algorithm step by step water surface line two dimensional hydrodynamic numerical model study |
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