Hydraulic conductivity of fracture of Toki granite

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Presentation transcript:

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 )

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