The importance of poroelastic coupling between stress and flow fields induced by different strength sources in shallow layered porous media is analyzed by a three-dimensional (3D) Finite Element (FE) consolidation model. The problems of a uniform pore pressure decline within a cylindrical reservoir, a distributed groundwater pumping fÌ'om a three-Iayer aquifer system, and a uniform surface lo ad over ground surface have been investigated. The results show that flow and stress fields can be uncoupled in the depleted reservoir and pumped aquifer as is assumed in the classical theory of flow through porous media, while the poroelastic coupling effect appears to play a more important role when the porous medium deformation is due to an extemal surface load.
Poroelastic coupling in layered porous media
FERRONATO, MASSIMILIANO;GAMBOLATI, GIUSEPPE;TEATINI, PIETRO
2002
Abstract
The importance of poroelastic coupling between stress and flow fields induced by different strength sources in shallow layered porous media is analyzed by a three-dimensional (3D) Finite Element (FE) consolidation model. The problems of a uniform pore pressure decline within a cylindrical reservoir, a distributed groundwater pumping fÌ'om a three-Iayer aquifer system, and a uniform surface lo ad over ground surface have been investigated. The results show that flow and stress fields can be uncoupled in the depleted reservoir and pumped aquifer as is assumed in the classical theory of flow through porous media, while the poroelastic coupling effect appears to play a more important role when the porous medium deformation is due to an extemal surface load.Pubblicazioni consigliate
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