... through altering the stress state. The stress state factor, ß , can be introduced to replace .s 2 to express 3D failure criteria as .s 1 = f (ß, s 3 ). Based on the idea of strengthening effect of .s 2 , Mogi (1971) proposed his criterion, a function of octahedral shear stress versus mean...

... Upstream Oil & Gas criterion sandstone extension Mogi laboratory test dimension true triaxial test extension triaxial test compression reservoir geomechanics strength shirihama sandstone Takahashi intermediate principal stress Reservoir Characterization hoek-brown failure...

... ABSTRACT: We have verified experimentally in two granites that a simple polyaxial strength criterion, originally suggested by Mogi (1971), correlates well with the state of stress at breakout edge on the borehole wall, and can be utilized for the calculation of one of the in situ principal...

... globalen Erwarmung. Kernkraftenergie, die vielversprechendste alternative Energiequelle, erzeugt geringe Mengen hoch radioaktiver Abfallprodukte. carbon dioxide Disposal rupture Reservoir Characterization volcano earthquake prediction structural geology Earthquake Kobe Earthquake Mogi...

... strength goodaan MPa transition point Reservoir Characterization streneth transition stress envelope shear strength relation loci equality point Mogi Byerlee equality stress shear strength envelope rock aaterial Relations between the shear strength of rock joints and rock material...

... & Gas end piece ductility specimen fracture characterization triaxial stress state Dunham dolomite general triaxial stress state Mogi compression Reservoir Characterization strength triaxial compression stress state minimum compression reservoir geomechanics piston deformation fracture...

... Gebirgsschlägen und Erdbeben. hydraulic fracturing strength microfracture dilatancy metals & mining scholz geophy criterion fracture compression rockburst deformation structural geology reservoir characterization earthquake brittle rock microfracturing mechanism propagate mogi...