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Communication Dans Un Congrès Année : 2023

Fluid Injection Influence on Fracture Propagation Near an Underground Drift

Résumé

This study analyzes the propagation of fractures around a gallery submitted to fluid injection. After recalling some concepts of fracture modeling in a porous medium, 2D simulations are carried out with the finite element code Disroc®. These simulations account for the anisotropy of the in-situ stress state. The impact of hydro-mechanical couplings under the effect of fluid injection is addressed by three approaches of increasing complexity: 1- The pressure is assumed to act only in the existing fractures and in the tunnel with no coupling in the rock mass. 2- The pressure field is assumed stationary, obtained from an independent simulation, and used as an input for the mechanical calculation. 3- The transient flow of the fluid in the fracture and in the rock, mass is considered and coupled with the mechanics. A comparison of these approaches clarifies the various contributions of hydromechanical couplings on fracture propagation over different time horizons.
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Dates et versions

hal-04376935 , version 1 (07-01-2024)

Identifiants

  • HAL Id : hal-04376935 , version 1

Citer

Mohammad Youssef Fallah Soltanabad, Amade Pouya, Laurent Brochard, Lina-María Guayacán-Carrillo, Christophe De Lesquen, et al.. Fluid Injection Influence on Fracture Propagation Near an Underground Drift. 15th ISRM Congress, Oct 2023, Salzbourg, Austria. ⟨hal-04376935⟩
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