... storage while one cycle every day for compressed air energy storage. For investigation of mechanical characteristics of rock salt under injection and withdrawal cycles, triaxial cyclic loading tests were conducted using a MTS test system. Linear relationships between stress and strain under unloading...

... Upstream Oil & Gas criterion rock salt top salt gorleben salt dome calculation Disposal Time Period disposal concept borehole disposal structural geology salt dome Heusermann hydraulic criterion Waste Emplacement Reservoir Characterization overburden salt barrier...

... wellbore integrity cyclic loading reservoir geomechanics strength rock salt surface subsidence Reservoir Characterization Upstream Oil & Gas strain-time curve Wellbore Design cavern specimen MPa loading GPa storage cavern cavern closure creep test viscoplasticity cyclic...

... of economic storage volume that is also unequivocally stable under the operatin structural geology mudstone Upstream Oil & Gas Reservoir Characterization steady-state creep rate interlayer natural gas storage cavern rock salt mechanical property creep anhydrite investigation tightness...

... and the repository geometry, the idealization of the geology as well as the geomechanical modelling taking into account the modelling of the underground structure and the appropriate material models with respect to creep and dilatancy of rock salt. For the geomechanical analysis the ANSALT finite-element code...