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我国解放后修建了大量的水库,其中较多的是开敞式溢洪道水库它们对除涝、发电、灌溉、航运等方面都起了很大的作用,但对防洪却只能起到一定的作用.当前,我国国民经济正在飞跃发展,为了保护水库下游地区的国民经济不受洪水威胁,适应国民经济的发展,对已建成水库的防洪能力亦提出了新的更高的要求.水库,在防洪方面,首先要求在确定的设计标准下,确保本身的安全;其次,有的水库还应承担减少它下游地区洪水灾害的任务.
After the liberation of our country, a large number of reservoirs were built, and most of them are open-type spillway reservoirs that play a large role in waterlogging drainage, power generation, irrigation and shipping but can only play a role in flood control At present, the national economy of our country is leaping forward, so that the protection of the national economy in the lower reaches of the reservoir from the threat of flood and the adaptation to the development of the national economy have also put forward new and higher requirements on the flood control capability of the completed reservoirs. Firstly, it is required to ensure its own safety under certain design standards. Secondly, some reservoirs should also undertake the task of reducing flood disasters in the downstream areas.