Water science and technology in China
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Lingqu Canal, situated in Xing"an County, Guangxi Zhuang Autonomous Region, is among the most fully preserved ancient man-made canals in the human being today. It has actually been acclaimed as one of the Three significant Water jobs of the Qin dynasty (221 BC come 207 BC) in China, together with the old Dujiangyan Project and also the Zhengguo Canal. In 2018, it was included to the world Irrigation task Heritage List.

You are watching: Why was the lingqu canal built?

In 219 BC, the Emperor that the Qin dynasty in China started to construct the Linqu Canal, in order to unify the southern an ar and facilitate the transportation of food grain to it is provided the army. It linked the Haiyang river – the resource of the Xiang flow (the biggest tributary of the Yangtze River) and also the Darong flow – the source of the Li river (the 5th largest tributary that the Pearl River). The Lingqu Canal had a full length the 36.4 kilometers, and also opened to navigating in 214 B.C. After 5 years that construction. Upon perfect of the canal, the Yangtze flow basin and the Pearl River container were connected, thus creating a navigating network throughout eastern and southern China.

The main component of the Lingqu Canal includes the canal head, the south canal and the north canal. Its guiding style principle is to intercept the Xiang River with a water diversion framework consisting that a rafter dam (large and small balance dams) and a plow-shaped dam, which might divert 30% of the flow runoff into the Li River through the southern canal (see the snapshot below).

The choice of the website of the Lingqu Canal, its ingenious architecture and an exact construction of show the outstanding engineering of old water jobs in China. The project layout and also hydraulic structures specifically reflect the unique social perspective of the Chinese civilization in terms of water job design, technical sophistication and aesthetic values. The epitomizes the marvelous accomplishments in the spheres of navigation and hydraulic design in old China. The steep sluice gate, which was developed to progressive the water level and also ensure navigation, was known as "the father of the Sluice Gate" by specialists of the international Commission on huge Dams.

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Although navigation no much longer takes place on the Lingqu Canal, it proceeds to carry out its irrigation role and contributes come the welfare of regional people.