I. Tashan weir
Tushan weir is a great water conservancy project created by working people in ancient China. It belongs to the water diversion and irrigation hub project built on the Yinjiang River, a tributary of Yongjiang River.
Located at Zhangxi exit of Tashan, Yinjiang Town, Haishu District, Ningbo City, Zhejiang Province. Located in the southwest of Ningbo City, Zhejiang Province, it was built by Wang, the county magistrate in the seventh year of Tang Taihe (AD 833).
Together with Zheng Guoqu, Lingqu and Dujiangyan in China, it is called the four major water conservancy projects in ancient China, and it is a national key cultural relic protection unit and the world irrigation project heritage.
Second, Zheng Guoqu.
Zheng Guoqu is a great project built by ancient working people, belonging to the earliest large-scale water conservancy project built in Guanzhong, located on the north bank of Jinghe River, 25 kilometers northwest of Jingyang County, Shaanxi Province. It draws water from the water mirror in the west to Luoshui in the east, with a total length of more than 300 miles (the irrigation area is called 40,000 hectares).
At the end of the warring States period, he was stabbed by Qin. In 246 BC (the first year of Qin Dynasty), it was built by North Korean hydraulic engineers and completed about ten years later.
Third, Lingqu
Lingqu, called Qin Interception Canal, Lingling Canal, Douhe Canal and Xing 'an Canal in ancient times, is a great project created by working people in ancient China. Located in Xing 'an, Guangxi Zhuang Autonomous Region, it was opened to traffic in 2 14 BC.
Lingqu from east to west connects Haiyang River in the east of Xing 'an (the source of Xiangjiang River flows from south to north) and Darong River in the west of Xing 'an (the source of Lijiang River flows from north to south). It is one of the oldest canals in the world and has the reputation of "the pearl of ancient water conservancy buildings in the world".
Fourth, Dujiangyan
Dujiangyan is located in the west of Dujiangyan City, Chengdu, Sichuan Province, on the Minjiang River in the west of Chengdu Plain. It was built in the last years of Zhao Haoqi in the Qin Dynasty (about 256 BC ~ 25 BC1year). It is a large-scale water conservancy project organized by Li Bing and his son, the magistrate of Shu County, on the basis of excavating the turtle spirit of their predecessors. It consists of a water-separating fish mouth, a sand-flying weir and a treasure bottle mouth.
For more than 2,000 years, it has been playing the role of flood control and irrigation, making Chengdu Plain a "land of abundance" with thousands of outstanding people and fertile land. 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 surviving and still-in-use grand water conservancy project characterized by dam-free water diversion in the world, which embodies the diligence, courage and wisdom of the ancient working people in China.
Extended data:
The historical significance of the four major water conservancy projects;
I. Zheng Guoqu
After the completion of Zheng Guoqu, great changes have taken place in agricultural production in Guanzhong, and the brine fields are irrigated with water filled with sediment. That is, irrigation with water mirror water with high sediment concentration increased soil fertility, agriculture developed rapidly, and Guanzhong, with scarce rainfall and barren land, became rich in the world (Biography of Historical Records).
Second, Tashan weir
Most of the existing weirs are buried under sand and have no irrigation function. After the reconstruction of Wat Phnom, the "Tashanyan Water Conservancy Exhibition Hall" was added, and the ancient temple fair was resumed every year on March 3rd and October 10th of the lunar calendar (according to legend, Wang just turned 33 when he built the weir, and October 10th was his birthday).
On the morning of 20 15, 10, 13 local time 12, the 66th International Executive Council of the International Commission for Irrigation and Drainage (ICID) held in Montpellier, France, announced the list of world irrigation project heritages selected in 20 15.
Third, Lingqu
The excavation of Lingqu communicated Xiangjiang River and Lijiang River, and opened up the north-south water channel, which provided an important guarantee for the Qin Dynasty to unify Lingnan. A large number of grain and grass are transported to Lingnan by water, and the material supply is sufficient.
In 2 14 BC, Lingqu was opened to navigation, and Qin Jun conquered Lingnan, and then three counties of Guilin, Xiang Jun and Nanhai were established, and Lingnan was formally incorporated into the territory of the Qin Dynasty.
Fourth, Dujiangyan
The establishment of Dujiangyan ushered in a new era in the history of ancient water conservancy in China. The establishment of Dujiangyan is based on the premise of not destroying natural resources and making full use of natural resources to serve mankind, turning harm into benefit, and making people, land and water highly coordinated and unified. It is the only great "ecological project" in the world so far.
It initiated a new era in the history of ancient water conservancy in China, marked a new stage in the history of water conservancy in China and wrote a glorious chapter in the history of water conservancy in the world. Dujiangyan Water Conservancy Project is the crystallization of ancient people's wisdom in China and an epoch-making masterpiece of Chinese culture.
Baidu Encyclopedia-Zheng Guoqu
Baidu encyclopedia-Tashanyan
Baidu encyclopedia-Lingqu
Baidu encyclopedia-Dujiangyan