Nonlinear viscoelastic compaction in sedimentary basins

X.-S. Yang (1)

1 Department of Fuel and Energy and Applied Mathematics

In the mathematical modelling of sediment compaction and porous media flow, the rheological behaviour of sediments is typically modelled in terms of a nonlinear relationship between effective pressure pe and porosity ?, that is pe = pe (?). The compaction law is essentially a poroelastic one. However, viscous compaction due to pressure solution becomes important at larger depths and causes this relationship to become more akin to a viscous rheology. A generalised viscoelastic compaction model of Maxwell type is formulated, and different styles of nonlinear behaviour are asymptotically analysed and compared in this paper.

Domaines: Cosmologie et astrophysique extra-galactique [astro-ph.CO]; Astrophysique [astro-ph]; Sciences de la Terre

X.-S. Yang. Nonlinear viscoelastic compaction in sedimentary basins. Nonlinear Processes in Geophysics, 2000, 7 (1/2), pp.1-8. ⟨hal-00301960⟩