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Tunnel boring machine empowers construction of 22 km long expressway tunnel in China
22 km long Tianshan Shengli tunnel an important piece of 1300km long expressway linking Urumqi and Yull county in central Xinjiang Uygur Autonomous Region of China. Tunnel Boring Machine "Shengli" more than 8 meter in diameter and 292 meter long.
cover tunnel photo by: Matt Brown from London, England / CC BY
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