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我国幅员广大,河流众多,水电资源居世界首位。建国以来为发展水利水电事业,修建了大量的拦河坝,粗略统计,目前我国15m以上的大坝近2万座,30m以上的大坝3000多座,居世界首位。而且筑坝工程在我国仍在方兴未艾,数量仍不断增加,规模不断加大,同时已建大坝的年龄也随年月不断在增长。
My country is vast in size and has many rivers, with the largest hydropower resources in the world. Since the founding of the PRC, a large number of barrage structures have been constructed for the development of water conservancy and hydropower projects. Roughly statistics are available. At present, there are nearly 20,000 dams of over 15m in China and over 3,000 dams of over 30m, ranking the first in the world. In addition, the dam construction project is still in the ascendant in our country, the number is still increasing and the scale is constantly increasing. At the same time, the age of dams built has been increasing with the years.