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The World's First Ultra-high-pressure Tunnel Holing-through
Date: 2018-08-22

On Aug 21, the world's first ultra-high-pressure tunnel through the Yangtze River, built by CRCC, was holing-through. The Su-tong GIL Utility Tunnel Project located in Changshu City, Jiangsu Province is the first time in the world to use a large-diameter shield tunnel in the power pipe corridor project. It is also the highest voltage level, the largest transport capacity and the most advanced technical level ultra-long-distance GIL innovation project in the world. The project has created many records of the world in the history of power engineering construction and tunnel shield construction.


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