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May 31, 2026Advances in Water Resources0 citationsOpen Access

Computed-tomography-based discrete fracture-matrix modelling: Part 2. Impact of confining stress on flow and solute transport

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CFCarlos A.S. FerreiraTechnical University of DenmarkADAnne Sofie DarketTechnical University of DenmarkHNHamidreza M. NickDanish Gas Technology Centre (Denmark)

Key Points

  • This research aims to explore how confining stress affects flow and solute transport in discrete fracture-matrix systems.
  • Utilized computed tomography (CT) to model discrete fracture-matrix (DFM) systems under various confining stresses.
  • Analyzed changes in fracture aperture closure in chalk material and the resulting transportation dynamics.
  • Anomalous transport was observed due to discrete fracture-matrix systems under confining stresses.
  • At higher stress, matrix flow predominates, leading to a reduction in fracture-driven transport.
  • Confining stress-induced aperture closure shifts flow behavior from superdiffusion to subdiffusion.

Abstract

• Anomalous transport resulted from DFM systems under confining stresses. • CT-based DFM captures stress-driven fracture aperture closure in chalk. • Matrix flow dominates at higher stress, reducing fracture-driven transport. • Stress-induced aperture closure shifts flow from super- to subdiffusion. • Disconnected fractures retain solute, affecting breakthrough and late-time tails.

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Cite This Study

Ferreira et al. (2026) studied this question.

synapsesocial.com/papers/6a1bd2375783ba022b6fda06https://doi.org/10.1016/j.advwatres.2026.105360
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