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Statistical damage model of rock considering pore water pressure and multifractal characteristics.

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Τίτλος: Statistical damage model of rock considering pore water pressure and multifractal characteristics.
Συγγραφείς: Zhang, Yonghui1 (AUTHOR), Li, Fangtao2 (AUTHOR) 13610098414@163.com
Πηγή: PLoS ONE. 9/15/2026, Vol. 21 Issue 9, p1-14. 14p.
Θεματικοί όροι: *Damage models, *Pore water pressure, *Fractals, *Multifractals, *Weibull distribution, *Fracture mechanics, *Rock mechanics, *Strength of materials
Περίληψη: A statistical damage model incorporating multifractal characteristics is proposed for micro-fractured rocks subjected to pore water pressure. Based on the assumption that microelement strength follows a Weibull distribution, the unified strength theory is adopted as the statistical variable, and a relative fractal dimension λ is introduced to quantitatively characterize the heterogeneity and anisotropy of the material, thereby establishing a statistical damage model for the rock, which is finally validated through experiments. The results show that: (1) The model predictions agree well with test curves, effectively reflecting the mechanical responses under varying pore water pressures; (2) Increasing pore water pressure accelerates damage evolution, lowers the critical damage threshold, and promotes rock failure; (3) A larger relative fractal dimension λ reduces microelement strength concentration, brittleness, damage threshold, and overall strength, making the rock more prone to instability. This study provides a reference for safety analysis of rock engineering under stress‑seepage coupling conditions. [ABSTRACT FROM AUTHOR]
Βάση Δεδομένων: Academic Search Index
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  Data: Statistical damage model of rock considering pore water pressure and multifractal characteristics.
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  Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Yonghui%22">Zhang, Yonghui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Fangtao%22">Li, Fangtao</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> 13610098414@163.com</i>
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  Data: <searchLink fieldCode="JN" term="%22PLoS+ONE%22">PLoS ONE</searchLink>. 9/15/2026, Vol. 21 Issue 9, p1-14. 14p.
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  Data: *<searchLink fieldCode="DE" term="%22Damage+models%22">Damage models</searchLink><br />*<searchLink fieldCode="DE" term="%22Pore+water+pressure%22">Pore water pressure</searchLink><br />*<searchLink fieldCode="DE" term="%22Fractals%22">Fractals</searchLink><br />*<searchLink fieldCode="DE" term="%22Multifractals%22">Multifractals</searchLink><br />*<searchLink fieldCode="DE" term="%22Weibull+distribution%22">Weibull distribution</searchLink><br />*<searchLink fieldCode="DE" term="%22Fracture+mechanics%22">Fracture mechanics</searchLink><br />*<searchLink fieldCode="DE" term="%22Rock+mechanics%22">Rock mechanics</searchLink><br />*<searchLink fieldCode="DE" term="%22Strength+of+materials%22">Strength of materials</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A statistical damage model incorporating multifractal characteristics is proposed for micro-fractured rocks subjected to pore water pressure. Based on the assumption that microelement strength follows a Weibull distribution, the unified strength theory is adopted as the statistical variable, and a relative fractal dimension λ is introduced to quantitatively characterize the heterogeneity and anisotropy of the material, thereby establishing a statistical damage model for the rock, which is finally validated through experiments. The results show that: (1) The model predictions agree well with test curves, effectively reflecting the mechanical responses under varying pore water pressures; (2) Increasing pore water pressure accelerates damage evolution, lowers the critical damage threshold, and promotes rock failure; (3) A larger relative fractal dimension λ reduces microelement strength concentration, brittleness, damage threshold, and overall strength, making the rock more prone to instability. This study provides a reference for safety analysis of rock engineering under stress‑seepage coupling conditions. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1371/journal.pone.0358254
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      – Code: eng
        Text: English
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        PageCount: 14
        StartPage: 1
    Subjects:
      – SubjectFull: Damage models
        Type: general
      – SubjectFull: Pore water pressure
        Type: general
      – SubjectFull: Fractals
        Type: general
      – SubjectFull: Multifractals
        Type: general
      – SubjectFull: Weibull distribution
        Type: general
      – SubjectFull: Fracture mechanics
        Type: general
      – SubjectFull: Rock mechanics
        Type: general
      – SubjectFull: Strength of materials
        Type: general
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      – TitleFull: Statistical damage model of rock considering pore water pressure and multifractal characteristics.
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            NameFull: Zhang, Yonghui
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            NameFull: Li, Fangtao
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            – D: 15
              M: 09
              Text: 9/15/2026
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              Y: 2026
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