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李冰任蜀守期间,做过一些有益的事,对都江堰工程作出了一定的贡献,是应该适当加以肯定的。但长期以来,李冰的成就被过分夸大了,唐代修的飞沙堰(当时称侍郎堰),明以后编的治水三字经,这些上下数百年间修的工程,全都说成是李冰的功劳了。还有,把开凿宝瓶口和沱江,也看作是李冰所为。其实,这也是很成问题的事。岷江从松潘县境内海拔三四千米处倾泻而下,坡度很陡,水流湍急。流至灌县城西玉垒山前,忽然进入一马平川,海拔降为七百米,洪水便无羁无束。成都平原的地形是西北高东南低,坡度千分之四,自然会使西南半壁水涝,东北半壁干旱。解决这个问题的唯一办法,
During Li Bing’s stay in Shushu, he had done some useful things and made some contribution to Dujiangyan’s project, which should be appropriately affirmed. For a long time, however, Li Bing’s achievements were over-exaggerated. In the Tang Dynasty, the weir weir weir (then called Lang Lang) and the Ming Dynasty’s later three-character water control were mentioned. Also, to dig the Aquarius mouth and Tuojiang, also considered as Li Bing. In fact, this is also a very serious issue. Minjiang River from Songpan County, where the elevation of 34 kilometers down, the gradient is steep, fast-flowing. Flow to Guanxian West Yuleishan, suddenly into a Ma Pingchuan, elevation of 700 meters, the flood will be uninhibited. The topography of the Chengdu Plain is southeast of the northwest, with a slope of four thousandths, which naturally causes waterlogging in the southwest halfway and drought in the northeast half. The only solution to this problem,