unveiling-the-ancient-engineering-wisdom-of-chengdu-dujiangyan-irrigation-system

unveiling-the-ancient-engineering-wisdom-of-chengdu-dujiangyan-irrigation-system

Blog Article

Chengdu Dujiangyan Irrigation System, an ancient marvel, stands as a testament to the extraordinary engineering wisdom of the past. Spanning over two thousand years, this system has continuously demonstrated its ingenuity and functionality.

Ingenious Structural Design

The Marvel of the Fish Mouth

The fish mouth, a key part of Chengdu Dujiangyan Irrigation System, is a masterpiece of hydraulic engineering. It divides the Minjiang River into the inner and outer rivers. This division is not random but based on a profound understanding of water flow dynamics. In the dry season, it ensures that more water is directed to the inner river for irrigation. Conversely, during the flood season, it diverts the majority of the water to the outer river, effectively preventing floods.

The Magic of Feisha Yan

Feisha Yan, another crucial component, showcases the ancient wisdom of sediment control. It is designed to automatically discharge sediment and excess water. When the water level in the inner river rises, the overflow spills over Feisha Yan into the outer river. Moreover, due to its special shape, it uses the centrifugal force to remove a large amount of sediment from the water, keeping the irrigation canals clear.

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