TY  - BOOK
AU  - Hoek,Evert
AU  - Brown,E.T.
TI  - Underground excavations in rock /  
SN  - 0900488557
PY  - 1980///
CY  - London : 
PB  - The Institution of Mining and Metallurgy, 
KW  - MECANICA DE ROCAS
KW  - EXCAVACIONES
KW  - TUNELES
N2  - Planning considerations - Classification of rock masses - Geological data collection - Graphical presentation of geological data - Stresses around underground excavations - Strength of rock and rock masses - Underground excavation failure mechanisms - Underground excavation support design - Rockbolts, shotcrete and mesh - Blasting in underground excavations - Instrumentation - Appendix
ER  -