Record-breaking open-type TBM rolls off production line
The Jianghan Xinshiqi open-type rock tunnel boring machine is unveiled in Changsha city, Central China's Hunan province, Nov 22, 2024. An open-type rock tunnel boring machine with a diameter of 11.93 meters, the largest of its kind in China, just rolled off the production line on Friday in Changsha, Central China's Hunan province, China News Service reported. Named Jianghan Xinshiqi, or Jianghan Neolithic, the machine measures approximately 175 meters in length, weighs around 3,000 metric tons and features a design with a minimum turning radius of 800 meters and a maximum gradient of 10 percent. This project presents highly complex geological conditions along its route, characterized by great depths, extended length, large tunnel diameters and numerous fault zones.
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