6VOGEL M,RAST H P.Transit-safety in construction as a challenge:health and safety aspects in very deep tunnel construction[J].Tunneling and Underground Space Technology,2000,15(4):481-484.
9He M C, Duan Q W, Sun X M. Computer numerical simulation of soft rock in China [A].Wang X. Computer applications in the minerals industries [ C ]. Roterdam: A A Balkema Publishers, 2001. 697-700.