FEM analyses for influences of stress-chemical solution on THM coupling in dual-porosity rock mass
文献类型：期刊论文
| 作者 | Zhang Yujun2; Yang Chaoshuai1 |
| 刊名 | 中南大学学报：英文版
 |
| 出版日期 | 2012 |
| 卷号 | 19.0期号:004页码:1138 |
| 关键词 | 有限元耦合 双重孔隙 岩体应力 有限元分析 力化学 THM 应力腐蚀 机械加工工艺 |
| ISSN号 | 1005-9784 |
| 英文摘要 | The models of stress corrosion, pressure solution and flee-face dissolution/precipitation were introduced. Taking a hypothetical nuclear waste repository in an unsaturated dual-porosity rock mass as the calculation objective, four cases were designed 1） the fracture aperture is a function of stress corrosion, pressure solution and free-face dissolution/precipitation; 2） the fracture aperture changes with stress corrosion and pressure solution; 3） the fracture aperture changes with pressure solution and free-face dissolution/precipitation; 4） the fracture aperture is only a function of pressure solution, and the matrix porosity is also a function of stress in these four cases. Then, the corresponding two-dimensional FEM analyses for the coupled thermo-hydro-mechanical processes were carried out. The results show that the effects of stress corrosion are more prominent than those of pressure solution and free-face dissolution/precipitation, and the fracture aperture and relevant permeability caused by the stress corrosion arc only about 1/5 and 1/1000 of the corresponding values created by the pressure solution and free-face dissolution/precipitation, respectively Under the action of temperature field from released heat, the negative pore and fracture pressures in the computation domain rise continuously, and are inversely proportional to the sealing of fracture aperture. The vector fields of flow velocity of fracture water in the cases with and without considering stress corrosion are obviously different. The differences between the magnitudes and distributions of stresses within the rock mass are very small in all cases. |
| 语种 | 英语 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/26228]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Technical Centre,China Railway Tunnel Group Co.Ltd 2.中国科学院 |
| 推荐引用方式 GB/T 7714 | Zhang Yujun,Yang Chaoshuai. FEM analyses for influences of stress-chemical solution on THM coupling in dual-porosity rock mass[J]. 中南大学学报：英文版,2012,19.0(004):1138. |
| APA | Zhang Yujun,&Yang Chaoshuai.(2012).FEM analyses for influences of stress-chemical solution on THM coupling in dual-porosity rock mass.中南大学学报：英文版,19.0(004),1138. |
| MLA | Zhang Yujun,et al."FEM analyses for influences of stress-chemical solution on THM coupling in dual-porosity rock mass".中南大学学报：英文版 19.0.004(2012):1138. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。