都江堰是我国最古老的大型水利工程之一。它建成于秦代,历时两千多年而未废,至今还发挥着巨大效益。都江堰经久不衰的历史根源是什么?研究这个问题,“古为今用”,对于我们今天水利事业的现代化建设,是很有意义的。 Dujiangyan is one of the oldest large-scale water conservancy projects in China. It was built in the Qin Dynasty, which lasted more than two thousand years without waste, but also play a huge benefit. What is the historical root of Dujiangyan’s enduring? To study this issue, “the ancient is the present and the modern one” is of great significance to the modernization of our water conservancy project today.