... as to simulate the evaporative condition of tunnel surface. Shirahama sandstone is used as a representative rock sample with mechanical isotropy to facilitate the interpretation of the transient behaviors in strain. As a result, the deformation accompanied with drying and wetting cycles is greater closer...

... flow in porous media node porosity hydraulic fracturing Rock mechanics Artificial Intelligence Upstream Oil & Gas triaxial compression deformation Shirahama sandstone permeability evolution evolution asahina modeling permeability evolution Modeling & Simulation Fluid...

..., and Transient Pulse tests were conducted. Shirahama sandstone and Kabasan granite were used as specimens for determining the hydraulic conductivity. The centrifugal constant head method proved to be low hydraulic conductivity value by an order of 1 or 2 than that by the gravity Transient Pulse method...

... are affected by the humidity and the amount of clays. structural geology relation water content SCG Upstream Oil & Gas strength humidity Shirahama sandstone hydraulic fracturing stress intensity factor fracture toughness sandstone atkinson Reservoir Characterization relative humidity...

...Eurock 2005 -Impact of Human Activity on the Geological Environment - Konecny (ed) © 2005 Taylor & Francis Group, London, ISBN 04 1538 042 1 Mechanical and hydraulic behaviors in Shirahama sandstone under true triaxial compression stress M. Takahashi Research Centerfor Deep Geological Environments...