黄河水沙监测数据分析中的问题探讨

Discussion on Problems in Analyzing Water and Sediment Monitoring Data of the Yellow River

介绍了黄河下游孙口水文站概况和实施水沙监测的工作概况,分析研究了近年来水文站径流量与输沙量等水文特征.通过对该水文站全年实际监测流量与含水沙量的方法和过程的分析,从时间和空间上提出了测验的优化方案设想,明确了可减少垂线条数和取样点个数的优化方案,构想了利用断面平均水流速与其挟沙力的关系来计算含沙量的方法,用于减少系统误差,并初步探讨了调水调沙对河床冲刷演变的影响.

This paper introduces the general situation of Sunkou Hydrology Station in the lower reaches of the Yellow River and the work of implementing water and sediment monitoring.The hydrological characteristics of runoff and sediment discharge of hydrological stations in recent years are analyzed and studied.Through the method and process of monitoring the actual flow and water and sand amount of the hydrology station throughout the year,the optimization scheme of testing is proposed from the perspective of time and space,and the optimization scheme of reducing the number of vertical lines and the number of sampling points is defined.In order to reduce the systematic error,a method to calculate the sediment content is proposed by the relationship between the average water velocity and the sediment carrying capacity of the section.The influence of"water-sediment regulation"on the evolution of river bed flushing is discussed.