入库洪水研究课题的提出,是由于建库前天然流域里有较大天然河槽调蓄作用,而建库后则这一作用消失。致使入库洪峰比坝址洪峰增大很多,这对于水库安全将会带来重要影响。所以,入库洪水无论在设计和预报上都具有重要意义。国外虽然没有正式提出入库洪水的研究课题,但是四十余年来[1][2]围绕着 The research topic of flood storage is due to the larger natural channel regulation and storage in the natural drainage basin before the construction of the reservoir and the disappearance of the role after the construction of the reservoir. As a result, the storage peak will increase greatly than the dam peak, which will have a significant impact on reservoir safety. Therefore, the flood of storage is of great significance both in design and forecast. Although foreign countries did not officially put forward the research topic of flood storage, but more than 40 years [1] [2] around