Let's talk about Li Bing's principle of water control. What methods have been adopted for Dujiangyan water conservancy project to give consideration to irrigation and flood control?

Relying on the strength of the people, the completion of the project is the credit of the working people.

3. Perseverance and strong will. Dujiangyan project is the result of the efforts of two generations of Li Bing and his son.

4. Water control projects are beneficial to economic development and benefit the people. Today, more than 2,000 years later, Dujiangyan Project still benefits Lebanese people and irrigates millions of acres of fertile land.

Dujiangyan water conservancy project takes water by gravity without dam. The head of the canal is composed of Baizhang dike, diversion dike, flying sand weir, drain tank and water intake. The diversion dike is located in front of the water inlet of the bottle mouth to introduce water into the channel. The water separating fish mouth is located in front of the diversion dike, which divides the Minjiang River into Neijiang River and Waijiang River. During the flood, the distribution ratio of the inner and outer rivers is 4:6, and most of the water is taken from the outer river to ensure the safety of the irrigation area; During the dry season, the proportion of inner and outer rivers is reversed, and most of the water enters Neijiang to ensure the water use in the irrigation area. Sand-flying weir and sluice are built on the diversion dike to discharge excess water and sediment in Neijiang and ensure the water level required by the water intake. Baizhang dike is located in the upstream of diversion dike, which can not only divert water, but also protect the river bank from scouring. Water diversion, flood discharge, water diversion and sand prevention are integrated.

Agricultural Water Conservancy Engineering Grade 2008