1. Hydraulic conductivity of fracture of Toki granite
Hydraulic conductivity of fracture vs. normal stress
Measured
Measured
Fitting
Fitting
Hydraulic conductivity[m/s]
Hydraulic conductivity[m/s]
Normal stress to fracture[MPa]
Normal stress to fracture[MPa]
Pre-existing fracture
Artificial fracture
From Core sample test ( about 1000m depth of MIZ1 borehole )

2. Hydraulic conductivity of fracture of Toki granite
Concept of Kf vs σn
Regression equation
Fracture σn
(Hydraulic conductivity kf)
Water Flow
Parameter α β γ
Natural fracture
-4.87
-0.424
1.17×10-3
Artificil fracture
-9.12
-0.468
1.18×10-3