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September 10, 2025Physics of Fluids

Damage mechanism of coal samples under the coupling effect of sulfate erosion and wet-dry cycles: Experiments, constitutive models, and numerical simulations

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Authors

LZLeiming ZhangMWMin WangBZBin Zhang

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Overview

Experiments reveal sulfate erosion impacts wet-dry cycle effects on coal's mechanical properties, suggesting durability concerns.

Key Points

  • Sulfate solution and wet-dry cycles decrease coal's peak strength and elastic modulus over time.
  • Uniaxial compression tests show that increased dry-wet cycles transition failure modes from tensile to shear.
  • Numerical simulations indicate that the coal's contact network loses load-bearing capacity before extensive damage appears.
  • The modified damage model closely matches experimental results, indicating its relevance for coal pillar durability.

Cite This Study

Zhang et al. (2025) studied this question.

synapsesocial.com/papers/68c19f7f54b1d3bfb60daa34https://doi.org/10.1063/5.0281708
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