Author(s)

A. Peratta & V. Popov

Abstract

Modelling flow and solute transport in fractured porous media A. Peratta & V. Popov Wessex Institute of Technology, Souuthampton, UK Abstract A BEM numerical model is presented for the flow and solute transport in fractured porous media, which is based on the dual reciprocity method - multi domain scheme (DRM-MD). The model solves the 3D flow equation based on the Darcy law in the coupled system of porous media, fracture network and fracture intersections. Unlike the discrete fracture models, which for simplicity use Fick's law in the porous media, the present model solves the complete 3D advection-dispersion equation with reaction, which is then coupled with the other two models, the fracture network and the fracture intersections. In this work the developed model is used for long-term risk assessment of hazardous waste disposal in underground abandoned mines. The following sections describe three different models: the continuum model (3D), the discrete-fracture model (2D) and the fracture in

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