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Dayaoshan Tunnel on Hengyang-Guangzhou Double-track Railway

Dayaoshan Tunnel on Hengyang-Guangzhou Double-track Railway was the longest railway tunnel with complex geological conditions and great construction difficulties. Through 5 years of great effort, 15 research teams organized by the Ministry of Railways of China have resolved 42 technical problems and obtained 10 items of research achievements. China Academy of Railway Sciences is one of the main undertakers with more than 50 researchers dispatched from the Southwest Branch (predecessor of China Railway Southwest Research Institute Co., Ltd.) and the Railway Construction Institute. And the project has been awarded the “Grand Prize for National Scientific and Technological Progress in 1992 ” and the “Grand Prize for Scientific and Technological Progress of Ministry of Railways of China in 1989”.

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