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在变动河床上,利用历史文献记载的洪水位最大涨差推求历史洪水是一个新课题。本文在分析黄河下游水位流量关系变化的基础上,充分利用历史文献中记载的一些相对数据,结合实际情况,选用历史洪水水沙因子,分析断面冲淤,计算水位流量关系,以推求历史洪水。并对黄河下游1761年特大洪水的洪峰流量进行了估算。
In changing the river bed, it is a new topic to deduce the historical flood by using the maximum jump of the flood level recorded in historical documents. Based on the analysis of the change of the relation between the water level and discharge in the lower reaches of the Yellow River, this paper makes full use of some relative data recorded in the historical documents. Combining with the actual situation, this paper selects the historical flood and runoff factors, analyzes the scouring and silting of the section and calculates the relation between water level and discharge. The flood peak flow in the 1761 flood in the lower Yellow River was also estimated.