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针对中国北方干旱半干旱缺水地区高含沙河流汛期洪水资源难于控制利用及评价的问题,以径流特征及水资源开发利用均具有典型性的泾河为例,根据河流径流特征和水资源利用特点,利用流域1933年-2001年汛期6月-10月的径流量、径流泥沙含量和引水量资料,基于它们之间的内在联系,把基本资料序列从小到大进行排列并划分成若干等级,通过对各等级的统计获得上三角形形式的洪水弃水系数与其影响要素之间的等级关系,提出汛期洪水弃水系数计算的分级最大值法,可快速准确地确定出不同沙限下的汛期洪水弃水量,通过与传统方法的比较,结果表明本研究提出的分级最大值法计算所得结果更为合理有效,为流域洪水资源的开发利用及评价提供一种行之有效的方法。
Aiming at the problem of difficult to control and evaluate the flood control resources of the high sediment-containing river in arid and semi-arid and water-scarce regions in north China, taking the Jinghe River, which has typical characteristics of both runoff and water resources development and utilization, as an example, according to the characteristics of runoff and the utilization of water resources Based on the intrinsic relationships between them, the basic data series are arranged in ascending order and divided into several grades according to the characteristics of runoff, runoff sediment content and water diversion from 1933 to 2001 in the flood season from June to October. , The grading maximum value method of calculating the flood abandonment coefficient in flood season is put forward by grading the relationship between the upper half of the triangular form of flood abandonment coefficient and its influencing factors by the statistics of all levels and can quickly and accurately determine the flood season under different sands Compared with the traditional methods, the results show that the results of the classification maximum method proposed in this study are more reasonable and effective, and provide an effective method for the development, utilization and evaluation of flood resources in the basin.