ABSTRACT 5 s-1 on the consolidated samples under 1 MPa, 5 MPa, 10 MPa and 15 MPa for 24 hours until the axial strain reached at 10% in 22°C and 80°C. Permeability at the end of 15 MPa consolidation was lower than those of under 1-10 MPa. In compression (i) permeability basically decreased with slight disturbances around peak load points due to rapid volumetric change (ii) under 1 MPa the permeability was larger, compare to 5-15 MPa confining pressure at 22°C (iii) no apparent confining pressure dependency was observed at 80°C. The permeability was lower at 80°C than 22°C. However, more water flow is expected for the same pore pressure gradient at 80°C due to lower viscosity of water.