The influence of joint distribution characteristics on the mechanical properties, fracture mechanisms, and energy characteristics of rock masses under stress conditions

Computers and Geotechnics, Год журнала: 2024, Номер 178, С. 106933 - 106933

Опубликована: Ноя. 21, 2024

Язык: Английский

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Study on the mechanical traits, failure mechanisms, energy responses, and influencing factors of columnar jointed basalts under direct and indirect tensile conditions

Frontiers in Earth Science, Год журнала: 2025, Номер 13

Опубликована: Апрель 30, 2025

In this study, by merging mesoscopic damage mechanics, the probabilistic strength principle, and continuum visuals of columnar jointed basalts (CJBs) featuring various joint arrangement patterns are converted into inhomogeneous numerical models utilizing digital visual analysis based on image correlation (DIC)-enhanced rock failure process (RFPA). The strength–deformation traits, rupture features, energy progression trends CJBs subjected to direct tension indirect (Brazilian splitting) explored compared. acoustic emission (AE) buildup linked specimen’s peak stress is defined as micro-crack index (MCEI), impact multiple factors MCEI analyzed. A factor sensitivity conducted. study reveals that compared Brazilian splitting condition (BSC), under tensile (DTC), (TS) equivalent deformation modulus (EDM) specimens in directions I II (perpendicular column axis) higher. direction parallel axis, DTC, TS BSC lower at tilt angle β = 0°–60° higher 75°–90°. Under BSC, fracture occur joints columns within a localized area along longitudinal centerline specimen. Considering diverse influencing for 30° appears later stage exhibits magnitude BSC. When ranks, decreasing order, follows: strength, secondary set, constitutive behavior, meso-rock homogeneity index. However, behavior than set. These findings can function an academic foundation understanding sequence emergence differences MCEIs conditions, thus providing scientific basis mass engineering monitoring, reinforcement, operational maintenance.

Язык: Английский

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Energy release and related sensitivity analysis of anisotropic CJBs under compression conditions without and with lateral pressure

Bulletin of Engineering Geology and the Environment, Год журнала: 2025, Номер 84(6)

Опубликована: Май 13, 2025

Язык: Английский

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Advanced multi-crack simulations in rocks using dynaset mesh refinement and dual mapping

Computers and Geotechnics, Год журнала: 2025, Номер 185, С. 107318 - 107318

Опубликована: Май 9, 2025

Язык: Английский

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