Experimental and Numerical Simulation Study on the Influence of Gaseous Water on the Mechanical Properties of Red-Layer Mudstone in Central Sichuan
文献类型：期刊论文
| 作者 | Huang, Kang; Yu, Fei; Zhang, Wei; Tong, Kaiwen; Li, Shichang; Guo, Jianhua; Chen, Shanxiong; Dai, Zhangjun |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2023-01-23 |
| 关键词 | Red-layer mudstone Water influence Mechanical properties Discrete element method Heterogeneity |
| ISSN号 | 0723-2632 |
| 英文摘要 | Water has a significant effect on the mechanical properties of rocks, especially those containing expansive clay minerals. The red-layer mudstone contains various clay minerals, which easily collapse in water. To further study the effect of water on the mechanical properties of red-layer mudstone, uniaxial and triaxial tests were first conducted on samples with different moisture contents, prepared using the gaseous moisture absorption method in the laboratory. The effect of water on the fracture mode, mechanical behaviour and strength of the red-layer mudstone was subsequently studied at a heterogeneous particle scale using the three-dimensional numerical simulation program 3DEC. The results demonstrated that the strengths of the mudstone samples (uniaxial compressive and triaxial compressive strengths) decreased with an increase in the moisture content. As the moisture content increased, the elastic modulus and residual strength of mudstone decreased. The Mohr-Coulomb strength envelope under different moisture contents was constructed, and it was found that with an increase in the moisture content, the cohesion of the mudstone decreased significantly and the internal friction angle remained almost unchanged. This numerical model accurately demonstrates the damage evolution (tensile and shear cracks) at a heterogeneous particle scale. Simultaneously, the macroscopic mechanical behaviour, strength and failure patterns observed in the laboratory were reproduced. Finally, this study reveals the weakening mechanism of water on the mechanical properties of red-layer mudstone at macroscopic and umesoscopic scales. |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000917385900001 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34881]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 2.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS |
| 推荐引用方式 GB/T 7714 | Huang, Kang,Yu, Fei,Zhang, Wei,et al. Experimental and Numerical Simulation Study on the Influence of Gaseous Water on the Mechanical Properties of Red-Layer Mudstone in Central Sichuan[J]. ROCK MECHANICS AND ROCK ENGINEERING,2023. |
| APA | Huang, Kang.,Yu, Fei.,Zhang, Wei.,Tong, Kaiwen.,Li, Shichang.,...&Dai, Zhangjun.(2023).Experimental and Numerical Simulation Study on the Influence of Gaseous Water on the Mechanical Properties of Red-Layer Mudstone in Central Sichuan.ROCK MECHANICS AND ROCK ENGINEERING. |
| MLA | Huang, Kang,et al."Experimental and Numerical Simulation Study on the Influence of Gaseous Water on the Mechanical Properties of Red-Layer Mudstone in Central Sichuan".ROCK MECHANICS AND ROCK ENGINEERING (2023). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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