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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 the historical data of flood in Puyang River and Qiantang River, the mathematical model of Puyangjiang fixed bed was built and the elastic coefficient was introduced as a sensitive index to analyze the influence of the flood level of Wenyan station on the flood level in the lower reaches of the Puyang River . The calculation results show that the mean elastic coefficients of the water level of Meiyang and Linpu in Puyang River to the water level in Wen’anyan are 0.35 and 0.74, respectively, that is, the relative increase of 1% in the water level of Wenyan and the increase of 0.35 in Meichang %, Linpu station relative increase in flood 0.74%. Visible Qiantang River Wenyan water level on the Puyang River Meilan, Linpu station top-off effect is significant, and the impact of Linpu Station is much larger than the Meicui Station.