1, fishmouth and Jingang dike, facing the upstream river head, are called "fishmouth". From "Yu Zui" to "Linbi", the Jingang Dike is equivalent to further dividing the Minjiang River into two parts. The original Minjiang River in the west is called "Waijiang"; The river in the east is called Neijiang.
2. The flying sand weir is actually a groove specially set aside at the place closest to the pile of things on the King Kong Dike. The similarity between weir and dike is to stop water, and weir is to stop water and let water overflow.
3. The east bank of Neijiang upstream of Baokou is S-shaped. When the flood rushes here and hits the rock wall of Leiyushan directly, it will roll, and the sediment in the lower layer will turn up, over the flying sand weir and become an outer river. This, in turn, solves the problem of siltation of remaining sediments.
Extended data
Dujiangyan has been playing the role of flood control and irrigation for more than 2,000 years, making Chengdu Plain a "land of abundance" with thousands of miles of floods and droughts. Up to now, the irrigation area has reached more than 30 counties and cities, covering an area of nearly 10 million mu. It is the oldest, only preserved and still in use in the world. Its characteristic is that it draws water without a dam, which embodies the diligence, courage and wisdom of the ancient working people in China.
Dujiangyan Scenic Area mainly includes Fulongguan, Erwang Temple, Anlan Cable Bridge, Yuleiguan, Lidui Park, Leiyushan Park, Yunv Mountain, Lingyan Temple, Zhao Pu Temple, Cuiyuehu Lake and Dujiangyan Water Conservancy Project.
20 18, 18 On August 3rd, the 69th session of the International Executive Board of the International Commission on Irrigation and Drainage was held in Saskatoon, Canada, and the World Heritage List of Irrigation Projects for 20 18 was published. Four projects, including Dujiangyan in China, were successfully declared.
Baidu encyclopedia-Dujiangyan