Influence of Joint Features on Rock Mass Hydraulic Conductivity
As anticipated in previous chapters, rock mass hydraulic conductivity is highly influenced by physical and geometrical discontinuity features. In particular, the water flow inside a single discontinuity is ruled by aperture and roughness, whereas the rock mass hydraulic conductivity also depends on the frequency and persistence of joints. Those features are extremely variable in space due to the heterogeneity of the rock mass system. The definition of those relations apt to describe the variability of the parameters involved, both in a deterministic way and through a statistical approach, is therefore very important.