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根据文史記載,及对水文资料的初步分析,永定河决口主要有水位高漲漫溢决口和水溜刷堤瀆决兩种。自官廳水庫建成后,除山峽发生特大洪水外,漫溢决口的威脅已基本消除。但溃决危險仍继续存在。本文的目的是根据永定河歷次决口情况并对水文及有关資料進行初步分析,來研究永定河潰决原因。并在这基础上,提出对官廳水庫运用的意見。以期通过水庫的適当运用而减少下游溃决的机会。
According to historical records, and a preliminary analysis of hydrological data, Yongdinghe ripples are mainly caused by high water levels and overflowing streams and water levees and embankments. Since the completion of the Guanting Reservoir, in addition to the huge flood in the gorge, the threat of overflowing breaches has been basically eliminated. But the danger of crashes still persists. The purpose of this paper is to study the causes of the Yongding River collapse based on the historical data of Yongding River and the preliminary analysis of hydrology and related data. And on this basis, put forward the opinion on the utilization of Guanting Reservoir. With a view to reducing the chance of a downstream bankruptcy through the proper use of reservoirs.