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Abstract: Nanjing Yangtze River (Weisan Road) tunnel is one of the most difficult shield tunnel project of the world, which has many special characteristics such as super-large diameter (14.93m), high water pressure (up to 0.72MPa), long distance tunneling (S-line:4140m, N-line:3557m), and complex geological conditions (including 400m rock-soil mixed ground with rock strength up to 115MPa). Key...