non uniform surrounding pressure

pressure pressure resistance sensor

broken and weak surrounding rocks

Broken Surrounding Rocks

cavern surrounding rocks

Change in surrounding rocks

classes of surrounding rocks

Classification of Surrounding Rocks

cracks in surrounding rocks

gateway surrounding rocks

ining support system for tunnel surrounding rocks

Large deformations of surrounding rocks

lining support system for tunnel surrounding rocks

loosening area of surrounding rocks

mining gateway with dynamic broken surrounding rocks

monitoring of surrounding rocks

permeability of surrounding rocks

s tress of surrounding rocks

soft and broken surrounding rocks