滞洪区运行与浦阳江洪水位特性的响应关系

发布时间：2018-05-24 03:44

本文选题：浦阳江 + 滞洪区　；参考：《排灌机械工程学报》2017年09期

【摘要】：以浦阳江为研究背景,通过建立二维水动力模型,分析了浦阳江各频率洪水与高湖不同泄洪总量组合工况下浦阳江流域的洪水位特性.结果表明,当浦阳江遭遇10 a一遇洪水增至20 a一遇,再增至50 a一遇时,东、西江各典型位置点洪水位的平均降低值由0.62 m增至0.70 m再减小为0.59 m,即高湖泄洪对浦阳江东、西江洪水位影响的敏感性呈先增强后减弱的规律.在浦阳江相同频率洪水工况下,流域各位置洪水位改变量均随高湖泄洪总量增大而增大.而高湖相同泄洪总量工况下,浦阳江遭遇10 a一遇洪水增至20 a一遇再增至50 a一遇时,流域各区域洪水位改变量呈先增后减的变化趋势.东、西江以及东、西江下游交汇口-出口河段的洪水位改变量自上而下均呈逐渐减小变化,而上游入口-东西江上游交汇口以及枫桥江河段则反之.研究结论可为优化高湖滞洪区运行提供指导.
[Abstract]:Based on the study background of Puyang River, the characteristics of flood water level in Puyang River basin under the combined conditions of different frequency floods and different total amount of flood discharge in Gaohu Lake were analyzed by establishing a two-dimensional hydrodynamic model. The results show that when Puyang River encounters flood once in 10 years and increases to once in 20 years and then increases to once in 50 years, the average decreasing value of flood water level at typical points in the east and west rivers will decrease from 0.62 m to 0.70 m and then to 0.59 m, that is to say, the flood discharge from high lake to the east of Puyang River will reduce the average value of flood water level from 0.62 m to 0.70 m, and then decrease to 0.59 m. The sensitivity of Xijiang flood water level increased first and then weakened. Under the same frequency flood condition of Puyang River, the change of flood water level in each position of the basin increases with the increase of the total flood discharge amount of the high lake. However, under the same flood discharge condition, the flood level of Puyang River increases first and then decreases when the flood increases to 20 a once in 10 years and then increases to 50 a once in 50 years. The change of flood water level in the east, west and east reaches of the lower reaches of the west river and the lower reaches of the west river gradually decreases from the top to the bottom, while the change of the flood water level from the upper entrance to the upper reaches of the east and west rivers and the Fengqiao river reaches the upper reaches of the east and west rivers The conclusions of the study can provide guidance for optimizing the operation of high lake flood detention area.
【作者单位】：浙江省水利河口研究院;浙江大学建筑工程学院;河海大学水利水电学院;
【基金】：浙江省科技计划项目(2015F50012)
【分类号】：TV122;TV873.2

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