دورية أكاديمية
Investigation into the Multistage Mechanical Damage Behavior of Columnar Jointed Basalts with Different Meso-Constitutive Relations and Model Sizes
| العنوان: | Investigation into the Multistage Mechanical Damage Behavior of Columnar Jointed Basalts with Different Meso-Constitutive Relations and Model Sizes |
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| المؤلفون: | Yongyi Wang, Bin Gong, Xiaoyu Yang, Chun’an Tang |
| المصدر: | Lithosphere, Vol 2023, Iss 1 (2023) |
| بيانات النشر: | GeoScienceWorld, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Geology |
| مصطلحات موضوعية: | Geology, QE1-996.5 |
| الوصف: | The mechanical characteristics of columnar jointed basalts (CJBs) are generally considered to be subject to size effects. They display complex mechanical behaviors under lateral pressure, which may be related to the variation in the rock's mesoproperties. In this study, many nonuniform CJB models with various rock meso-constitutive relations and model sizes were established, and their influences on the strength and deformation properties, multistage mechanical damage behavior, and acoustic emission characteristics of CJBs were investigated. The results show that, as the residual strength coefficient increases, the compressive strength of CJBs rises, and the equivalent deformation modulus of CJBs decreases or increases slightly; with an increase in the model size, the compressive strength slightly decreases at first and then varies moderately, and the equivalent deformation modulus shows a fluctuating trend. Furthermore, the macro stress–strain relationships can be divided into different stages according to the corresponding damage behaviors. The strains and energy accumulations before peak stress was reached were further analyzed. The results greatly improve our understanding of the collapse process of CJBs and the instability precursors of related structures. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1941-8264 1947-4253 |
| Relation: | https://doaj.org/toc/1941-8264; https://doaj.org/toc/1947-4253 |
| DOI: | 10.2113/2023/8711959/5987254/8711959.pdf |
| DOI: | 10.2113/2023/8711959 |
| URL الوصول: | https://doaj.org/article/374620250145451ab4ef95f3b6d9cd2b |
| رقم الأكسشن: | edsdoj.374620250145451ab4ef95f3b6d9cd2b |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19418264 19474253 |
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| DOI: | 10.2113/2023/8711959/5987254/8711959.pdf |