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March 2, 2026Chinese Journal of Rock Mechanics and Engineering

Percolation mechanism of seepage in rough rock fractures

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Authors

YLYintong LIULMLingtao MaoJCJianchao CHENG

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Overview

Demonstrates the transport percolation threshold in seepage flow, suggesting a new approach to hydraulic critical behavior.

Key Points

  • The aim is to determine a transport percolation threshold that represents hydraulic critical behavior in fluid flow through rough rock fractures.
  • Developed a comprehensive Bingham fluid seepage model considering fractal dimensions of fractures.
  • Integrated unit percolation models with diffusion equations to create a global percolation model.
  • Investigated the relationship between pressure gradient and flow velocity during transitions from low to high velocities.
  • The unit percolation model under Forchheimer flow assumptions captures geometric percolation effects better than Darcy flow assumptions.
  • Outlet flow velocity during phase transitions aligns more with Forchheimer's nonlinear characteristics than with Darcy's linear assumptions.

Cite This Study

LIU et al. (2026) studied this question.

synapsesocial.com/papers/69a52920f1e85e5c73bf0733https://doi.org/10.3724/1000-6915.jrme.2025.0438
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