摘要
基于浦阳江洪水与钱塘江洪水历史遭遇的统计资料,构建了浦阳江二维定床数学模型,并引入弹性系数作为敏感性指标,分析了闻堰站洪水位对浦阳江下游段洪水位的影响。计算结果表明,浦阳江湄池、临浦站洪水位对闻堰站水位的弹性系数均值分别为0.35、0.74,即闻堰站洪水位相对增大1%,湄池站洪水位相对增大0.35%,临浦站洪水位相对增大0.74%。可见钱塘江闻堰站水位对浦阳江湄池、临浦站顶托作用显著,且对临浦站的影响远大于湄池站。
Based on statistical data that flood of Puyang River encounters with historical flood of Qiantang River, two- dimensional fixed bed mathematical model is established to analyze the influence of flood level of Wenyan Station on flood level of Puyang River lower reaches. At the same time, coefficient of elasticity is used as the index of sensitive analysis. The results show that average coefficient of elasticity of Meichi Station and Linpu Station are respectively 0.35 and 0.74, which means that the flood level of Meich Station and Linpu Station respectively rises 0.35% and 0.74% when flood level of Wenyan Station rises 1%. It can be seen from the above analysis that the backwater of flood of Wenyan Station to Mei- chi Station and Linpu Station is obvious, and the backwater impact on Linpu Station is greater than that of Meichi Station.
出处
《水电能源科学》
北大核心
2011年第11期11-14,共4页
Water Resources and Power
基金
水利部"948"基金资助项目(201026)
关键词
洪水位
顶托
遭遇
浦阳江
钱塘江河口
flood level
backwater
eneounter
Puyang River
Qiantangjiang estuary
