FEM analyses for influences of stress corrosion and pressure solution on THM coupling in dual-porosity rock mass
文献类型：期刊论文
| 作者 | Zhang YuJun1; Zhang WeiQing2; Yang ChaoShuai1 |
| 刊名 | SCIENCE CHINA-TECHNOLOGICAL SCIENCES
 |
| 出版日期 | 2011 |
| 卷号 | 54期号:7页码:1748-1756 |
| 关键词 | stress corrosion pressure solution dual-porosity medium thermo-hydro-mechanical coupling FEM analysis |
| ISSN号 | 1674-7321 |
| DOI | 10.1007/s11431-011-4437-6 |
| 英文摘要 | With the models of stress corrosion and pressure solution, by Yasuhara et al., two computation conditions were designed for a hypothetical nuclear waste repository in an unsaturated dual-porosity rock mass: (i) the fracture apertures are changed with the stress corrosion and pressure solution (the porosity of rock matrix is also a function of stress); (ii) the fracture apertures and the porosity of rock matrix are constants. Then the corresponding two-dimensional FEM analyses for the coupled thermo- hydro-mechanical processes were carried out, and the states of temperatures, rates and magnitudes of aperture closure, pore pressures, flow velocities and stresses in the rock mass were investigated. The results show the followings: The aperture closure rates caused by stress corrosion are almost six orders higher than those caused by pressure solution, and the two kinds of closure rates climb up, then decline, furthermore tend towards stability; the fracture apertures decrease from the original value and tend towards the residual value, and the contact-area ratios of asperities increase also from the original value and tend towards the nominal value; when the effects of stress corrosion and pressure solution are considered, the negative fracture pressures in near field rise very highly; the differences between the magnitudes and distributions of stresses within the rock mass in two calculation cases are very small. |
| WOS研究方向 | Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000292828100016 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3296]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech ; 2.SW Jiaotong Univ, Sch Civil Engn |
| 推荐引用方式 GB/T 7714 | Zhang YuJun,Zhang WeiQing,Yang ChaoShuai. FEM analyses for influences of stress corrosion and pressure solution on THM coupling in dual-porosity rock mass[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2011,54(7):1748-1756. |
| APA | Zhang YuJun,Zhang WeiQing,&Yang ChaoShuai.(2011).FEM analyses for influences of stress corrosion and pressure solution on THM coupling in dual-porosity rock mass.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,54(7),1748-1756. |
| MLA | Zhang YuJun,et al."FEM analyses for influences of stress corrosion and pressure solution on THM coupling in dual-porosity rock mass".SCIENCE CHINA-TECHNOLOGICAL SCIENCES 54.7(2011):1748-1756. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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