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At 78 meters deep and capable of supporting trains at 250 km/h, the underwater tunnel construction will connect Zhoushan to Ningbo by 2028, drastically reducing travel times and boosting the local economy.
Construction is underway on an underwater railway tunnel connecting Zhoushan to Ningbo in China. The Jintang Undersea Tunnel, estimated to cost $3,3 billion, will be the world’s third-longest undersea railway tunnel and promises to significantly reduce travel times between the two cities. The project is a combination of cutting-edge engineering and strategic vision, and is expected to be completed by 2028.
The current journey between these cities can take up to an hour and a half. With the new tunnel, that time will drop to just 30 minutes. Isn’t that impressive? Imagine saving an entire hour on each journey – It's as if time gained wings.
What is the Jintang Undersea Tunnel and how will the underwater tunnel construction be?
The Jintang Undersea Tunnel is part of a larger plan, the Ningbo-Zhoushan High-Speed Railway, which will connect islands in Zhejiang province to the mainland. The tunnel will be 16 kilometers long and will reach a depth of 78 meters below sea level. The longest section, at 11 kilometers, will be armored to withstand speeds of up to 250 km/h.
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The tunnel crosses the Jintang Canal, a crucial shipping route to Zhoushan Port, one of the world’s busiest ports. It’s not just a tunnel; it’s a masterpiece of modern engineering, designed to handle the challenging conditions of the marine environment.
Why is the Jintang Tunnel so important?
Currently, the two cities are connected by sea bridges and ferries, which limits the speed and efficiency of travel. With the construction of the tunnel, mobility will be revolutionized. The project strengthens port logistics, allowing cargo and passenger transportation to be carried out more quickly and safely.
This project promises to be a driver of economic growth in the Yangtze River Delta region. With such advanced infrastructure, local trade, tourism and industry will receive a significant boost. It is like transforming a dirt road into a digital superhighway.
How does the project address challenges?
Such an ambitious project faces complex geological challenges. To overcome these, the 4.350-ton Dinghai TBM drilling rig with 308 custom cutters is designed to drill to a depth of 42 meters under the sea. The rig tackles 28 distinct geological transitions, showing that technology can overcome even the forces of nature.
Once completed, the high-speed rail construction will enable faster and less polluting travel, aligning with China’s sustainability goals. This connection will strengthen regional integration, promoting economic and social development while reducing dependence on road vehicles.
The Jintang Undersea Tunnel It is not just a great work of engineering, but also a bridge to the future. It promises to transform mobility in China, bringing efficiency, connectivity and sustainability to the region.
