1976年以来黄河利津至口门河段险工水位分析

发布时间：2018-06-22 01:12

  本文选题：险工水位 + 清水沟原河道　； 参考：《人民黄河》2017年11期

【摘要】：清水沟流路1976年行河以来,来水来沙条件及河道边界条件都发生了较大变化,对1976年黄河行河清水沟以来利津至河口河段6—10月有观测资料的险工不同流量级水位变化情况进行分析,为黄河下游防洪及河口治理提供参考。分别对清水沟流路原河道行河和清8汊行河两个时期水位资料进行分析,可以发现清水沟流路原河道行河时期(1976—1996年)各险工的"抬升—降低—抬升"水位变化过程基本与清水沟流路原河道"淤积—冲刷—淤积"的演变过程相对应。清8汊行河时期(1996—2015年)研究河段水位受河道改汊、挖河固堤工程、小浪底调水调沙等影响,基本处于下降状态,尤其是小浪底水库调水调沙以来,除王家庄外各站3 000 m~3/s流量对应水位较改汊前都下降了1 m以上,充分体现了水位的升降与来水来沙条件、河道边界条件之间的关系。
[Abstract]:Since the river was moved along the Qingshuigou River in 1976, the conditions of water and sediment and the boundary conditions of the river have changed greatly. This paper analyzes the variation of water level of different discharge levels of dangerous workers in June to October of June to October in the reach of Lijin to estuary since the Qingshuigou of the Yellow River in 1976, which provides a reference for flood control and estuary control in the lower reaches of the Yellow River. The water level data of the original river course and the Qing8 branch river in Qingshuigou flow Road are analyzed respectively. It can be found that the process of "uplift-lowering-uplift" water level variation of the original channel in Qingshuigou flow Road (1976-1996) corresponds to the evolution process of "silting, scouring and silting" in the original channel of Qingshuigou flow Road. Study on the Water level of the reach affected by River diversion, River Embankment Construction, Xiaolangdi Water and sediment Regulation period (1996-2015), the water level of the reach is basically in a declining state, especially since the Xiaolangdi Reservoir has transferred water and sediment. The corresponding water level of 3 000 m / 3 / s of discharge in all stations except Wangjiazhuang has decreased by more than 1 m compared with that before the change, which fully reflects the relationship between the rising and falling of water level and the condition of incoming water and sediment, and the boundary condition of river course.
【作者单位】： 山东黄河河务局黄河河口管理局;
【分类号】：TV856;TV882.1
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本文编号：2050871