Academic Journal
Statistical damage model of rock considering pore water pressure and multifractal characteristics.
| Τίτλος: | Statistical damage model of rock considering pore water pressure and multifractal characteristics. |
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| 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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