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三峡工程是一个伟大的工程,若能充分发挥它的巨大综合效益,对我国社会主义建设和子孙后代将产生重大影响。我作为一个科技工作者,曾对三峡、金沙江和嘉陵江进行过几年的全江性水利考察。纵观三峡工程,目前主要存在两个问题,即泥沙和航运问题。特别是泥沙对库区回水段的淤积,不仅影响水库的使用寿命,而且还影响回水段的通航。长江是我国第一大河,在世界上居第三位,但是,长江输沙量浩大,宜昌以上平均年输沙量达到5.2亿吨,居世界第四位。根据规
The Three Gorges Project is a great project. If it can give full play to its enormous comprehensive benefits, it will have a significant impact on the socialist construction of our country and future generations. As a science and technology worker, I had conducted all-river water conservancy inspection of the Three Gorges, Jinsha River and Jialing River for several years. Looking at the Three Gorges Project, there are mainly two problems at present: sediment transport and shipping. In particular, siltation of sediment on the backwater section of the reservoir area not only affects the service life of the reservoir, but also affects the navigation of the backwater section. The Yangtze River is the largest river in our country and the third highest in the world. However, the volume of sediment transported by the Yangtze River is vast. The average annual sediment transport over Yichang has reached 520 million tons, ranking the fourth in the world. According to regulations