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丹江口水利枢纽位于汉江与丹江汇口下游,距河口约650公里,控制集水面积97400平方公里,占洪水期控制集水面积的68%,为一综合利用的大型水库。汉江水文资料的历史记载不长,干流上设立有实测流量资料的测站,一般只有十六七年历史。襄阳站观测水文较早,连同水位及不完整年份记载,截至1955年计有27年连续系列。汉江雨量资料亦少,且精度较差,故丹江口枢纽设计洪水的推求,直接从迳流资料入手,计算较为简捷。兹就工作中有关几个问题提出讨论如下:
The Danjiangkou Hydropower Project is located at the lower reaches of the Hanjiang River and the Danjiangkou junction, about 650 kilometers away from the estuary. The controlled catchment area is 97,400 square kilometers, accounting for 68% of the controlled catchment area in the flood season, making it a large-scale integrated reservoir. Han River hydrological data is not long historical records, the establishment of a measured flow of data on the main station, usually only sixteen or seven years of history. Xiangyang Station Observed hydrology earlier, together with the water level and incomplete records, as of 1955, there are 27 consecutive series. Hanjiang rainfall less data, and the accuracy is poor, so the Danjiangkou junction design flood deduction, directly from the inflow data to start, the calculation is relatively simple. I will discuss the following several issues related to my work: