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Coupled Hydro-Mechanical Modelling of Deep Geothermal Heat Production
We present first results of a coupled hydro-mechanical modelling approach for a so-called benchmark fault zone set-up, built according to characteristic features of fault zones as they can be found in the subsurface of North-European lowlands. Several layers down, to a depth of 5000 m, are considered, separated by a fault zone, in which geothermal anomalies can expect to be found, suitable for geothermal heat production. For modelling we apply the COMSOL Multiphysics code. The two-way coupling between hydraulics and mechanics in a poroelastic approach is outlined. We conclude that using poroelastic and hydrogeological parameters in the expected range, the deformations at the ground surface are marginal and also the hydraulic gradient in the usual range is quite irrelevant.
Coupled Hydro-Mechanical Modelling of Deep Geothermal Heat Production
We present first results of a coupled hydro-mechanical modelling approach for a so-called benchmark fault zone set-up, built according to characteristic features of fault zones as they can be found in the subsurface of North-European lowlands. Several layers down, to a depth of 5000 m, are considered, separated by a fault zone, in which geothermal anomalies can expect to be found, suitable for geothermal heat production. For modelling we apply the COMSOL Multiphysics code. The two-way coupling between hydraulics and mechanics in a poroelastic approach is outlined. We conclude that using poroelastic and hydrogeological parameters in the expected range, the deformations at the ground surface are marginal and also the hydraulic gradient in the usual range is quite irrelevant.
Coupled Hydro-Mechanical Modelling of Deep Geothermal Heat Production
Holzbecher, E. (author)
Fifth Biot Conference on Poromechanics ; 2013 ; Vienna, Austria
Poromechanics V ; 1913-1922
2013-06-18
Conference paper
Electronic Resource
English
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