ORIGINAL RESEARCH
Cause Analysis of Soft and Hard Rock Tunnel
Collapse and Information Management
Liping Li1,2,3, Qinghan Wang1, Shucai Li1, Hongwei Huang2,
Shaoshuai Shi1, Kang Wang1, Ting Lei1, Diyang Chen1
Pol. J. Environ. Stud. 2014;23(4):1227-1233