1. Engineering classification of rock masses for the design of tunnel support;Barton;Rock Mechanics,1974
2. Engineering classification of jointed rock masses;Bieniawski;Transactions, South African Institution of Civil Engineers,1973
3. Some problems of the engineering geology on railway tunnels of mountaineous countries in China;Chen,1986
4. Block modulus—a new index for rock mass quality evaluation;Chen,1983
5. Analysis of cave-in incidences in the Jundushan Tunnel;Ding,1994