黄河下游最小输沙用水总量的初步估算

Estimate of the Minimum Water Requirement for Sediment Transport in the Lower Yellow River

黄河下游河道的输沙能力是冲积河流随来水来沙自动调整的结果。黄河下游输沙用水总量是黄河下游河道这种自动调整水沙关系的宏观表现。作者通过对 1 949～ 1 95 3年黄河下游主要水文站实测资料的分析 ,找到黄河下游最小输沙水量 ,据此估算了黄河下游在小浪底水库投入运行后 2

The sediment transport capacity in the Lower Yellow River channel is capable of self adjustment according to the incoming water discharge and sediment content. The total water requirement for sediment transport in the Lower Yellow River is the reflection of this self adjustment. In this paper, the minimum water requirement for sediment transport in the river has been analyzed by using field data collected at several stations during 1949～1953 Based on this analysis, minimum total annual water requirement for sediment transport in the Lower Yellow River has been estimated for a 20 year period after Xiaolangdi Project is completed.