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Modeling Storage Behavior in a Fractured Rock Mass

by D. Bruel, Ecole Nationale Superieure des Mines, de Paris, Fontainebleau, France,
S. Ezzedine, Ecole Nationale Superieure des Mines, de Paris, Fontainebleau, France,
E. Ledoux, Ecole Nationale Superieure des Mines, de Paris, Fontainebleau, France,



Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1993

Abstract:

To represent single bore hole injection tests in fractured rock masses, a transient model has been implemented, based on a three dimensional stochastic description of the fracture network. The rock matrix remains impervious and storage occurs in the fractures, using a non-linear compliance effect depending on both fluid pressure and normal closure stress acting on the joints. The study is intended to show how the shortest, weakly connected, joints can be removed and replaced by an equivalent coefficient. These efforts lead to save computational time or to enlarge the modeled rock volume. Moreover, this approach may be helpful to address the troublesome up scaling problem in non-continuous media.

Subject Headings: Rock masses | Mathematical models | Cracking | Waste storage | Three-dimensional models | Rocks | Joints

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