Key Technologies for the Large-scale Tunnel Construction and Operation Safety in Complex Environments

      We developed the structure analysis theories for tunnels in high-shield  tunnels  and  the  technology  system  for environmental impact and operation safety control, which have been widely applied to the construction of railways like  Wuhan一Guangzhou,  Guangzhou一Shenzhen一Hong Kong, and Chengdu一Lanzhou ones and that of urban rail transit in cities like Shenzhen, Chengdu, Guangzhou, and Nanjing.