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Yuanliangshan Tunnel on Chongqing-Huaihua Railway
Yuanliangshan Tunnel, about 11.068km, is the number one key project on the newly-built Chongqing-Huaihua Railway. And China Railway Southwest Research Institute has involved in numbers of scientific researches on this project, such as “Experimental Study on Key Techniques for Curtain Grouting and Safety Construction in Water-rich Karst Areas with High Pressure”, etc, of which “Experimental Study on Key Techniques for Yuanliangshan Tunnel Construction on Chongqing-Huaihua Railway (Sub-topic B)” won the 2nd prize of Science and Technology Award of China Railway Society in 2003, and solved a series of key technical difficulties, providing valuable experiences for tunnel construction in similar areas。

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