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World's largest shiplift starts operation at China's Three Gorges Dam
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Program Code: 0909346160905006 Source: Xinhua
THE trial operation of a permanent shiplift on the Three Gorges Dam in central China's Hubei Province began Sunday.
The shiplift, designed by a Chinese and German team, is the largest and most sophisticated in the world, according to the China Three Gorges Corp., a state-owned company responsible for the construction of the Three Gorges project.
The beginning of its trial operation marks the completion of the Three Gorges project 22 years after construction on the mammoth project began, said Zhang Shuguang, assistant general manager of the corporation.
The vertical-hoisting elevator is designed to help small and medium-sized ships, with a maximum displacement of about 3,000 tonnes, to traverse the dam. The water level behind the dam is up to 113 meters higher than the downstream river.
The shiplift is equipped with a ship-chamber, which has a pool of water 120-meters long, 18-meters wide and 3.5-meters deep. The chamber, its mechanical systems and the water weigh 15,500 tonnes altogether.
The shiplift has been installed to complement the five-tier ship lock next to it, which is also the world's largest and has allowed ships to pass through since 2003.
The ship lock is running at full capacity, with its cargo throughput standing at 119.6 million tonnes in 2015, compared with 34.31 million tonnes in 2004. The increase has been attributed to the booming water transportation sector in the mountainous regions of the Three Gorges, including the southwestern municipality of Chongqing.
It used to take ships about three to four hours to pass the dam via the ship lock. The shiplift will cut this time to about 40 minutes to one hour.
Construction of the shiplift began in 1994. Due to technical difficulties, the project was put on hold in 1995. Construction resumed in 2008.
The Three Gorges project is a multi-functional water control system. Its functions include flood control, transportation and power generation.
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