7J A Richards. Inspection, Maintenance and Repair of Tunnels:International Lessons and Practice. Tunneling and Underground space Technology, 1998,13 : 369 - 375.
8D Diamantidis, F Zuccarelli, A Westhasuer. Safety of long railway tunnels[J]. Reliability Engineering and System safety,2000,67 : 135 - 145.
9Akira Inokuma, Shigero Inano. Road Tunnels in Japan:Deterioration and Countermeasures[J]. Tunneling and Underground space Technology, 1996,11 : 305 - 309.