Regional Flow Simulation in Fractured Aquifers Using Stress-Dependent Parameters

Details Regional Flow Simulation in Fractured Aquifers Using Stress-Dependent Parameters Regional Flow Simulation in Fractured Aquifers Using Stress-Dependent Parameters

2011-09-14

arxiv.org/abs/1109.3111v1

Physics

Fluid Dynamics

10 pages, 7 figures, submitted to Ground Water 2011

Scientific paper

10.1111/j.1745-6584.2011.00853.x

A model function relating effective stress to fracture permeability is developed from Hooke's law, implemented in the tensorial form of Darcy's law, and used to evaluate discharge rates and pressure distributions at regional scales. The model takes into account elastic and statistical fracture parameters, and is able to simulate real stress-dependent permeabilities from laboratory to field studies. This modeling approach gains in phenomenology in comparison to the classical ones because the permeability tensors may vary in both strength and principal directions according to effective stresses. Moreover this method allows evaluation of the fracture porosity changes, which are then translated into consolidation of the medium.

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