accumulation of porous surrounding rock
Analysis of surrounding rock
anchorage during surrouding rock
bearing capacity of surrounding rock
Broken Surrounding Rock
calculating of surrounding rock pressure
category of surrounding rock
characteristic equation of surrounding rock
CHARACTERISTICS OF SURROUNDING ROCK MASS
Classification of surrounding rock
CLASSIFICATION OF SURROUNDING ROCK MASS
Classification of surrounding rock masses
classification of surrounding rock stability
Complex Surrounding Rock
control of surrounding rock of tunnel
Criteria for surrounding rock mass classification
Crushed Surrounding Rock
DEFORMATION AND CRACKING MECHANISM OF SURROUNDING ROCK