Figure 6

Fractured rock mass capillary behavior. (a) The fractured rock mass with three orthogonal fracture sets with the same spacing d in the three directions. (b,c) P_c-S_w curve for the fractured medium with a (b) heterogeneous (s_M/μ_M = 1.0) and (c) homogeneous (s_M/μ_M = 0.1) rock matrix lognormal pore size distribution (see Ref.⁵³ for rock matrix pore network model). Model parameters used to compute the fracture P_c-S_w curve: α = 1 × 10^–7 m³_, β = 2.9, L × L = 0.1 × 0.1 m, Δl = 1 mm. Model parameters for the matrix: μ_M = 0.1 mm, L × L = 0.1 × 0.1 m, Δl = 1 mm.