Deformation and Failure Mechanism of Phyllite under the Effects of THM Coupling and Unloading
文献类型：期刊论文
| 作者 | MENG Lubo ; LI Tianbin ; XU Jin ; CHEN Guoqing ; MA Hongming ; YIN Hongyu |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2012-12 |
| 卷号 | 9期号:6页码:788-797 |
| 关键词 | Phyllite Mechanical characteristics Penetrability Failure mechanism Loading test Thermo-Hydraulic-Mechanics (THM) |
| 通讯作者 | LI Tianbin |
| 英文摘要 | Although the study of TM (Thermo - Mechanics), HM (Hydraulic - Mechanics) and THM (Thermo - Hydraulic - Mechanics) coupling under a loading test have been under development, rock failure analysis under THM coupling and unloading is an emerging topic. Based on a high temperature triaxial unloading seep test for phyllite, this paper discusses the deformation and failure mechanism of phyllites under the “H↔M, T→H, T→M” incomplete coupling model with unloading conditions. The results indicate that the elastic modulus and initial permeability decrease and the Poisson’s ratio increases with increasing temperature; the elastic modulus decreases and the Poisson’s ratio and initial permeability increase with increasing water pressure. During the unloading process, rock penetrability is small at the initial elastic deformation phase, but the penetrability increases near the end of the elastic deformation phase; mechanisms involving temperature and water pressure affect penetrability differently. Phyllite failure occurs from the initial thermal damage of the rock materials, splitting and softening (which is caused by pore water pressure), and the pressure difference which is formed from the loading axial pressure and unloading confining pressure. The phyllite failure mechanism is a transtensional (tension – shearing) failure. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-04-18 |
| 源URL | [http://192.168.143.20:8080/handle/131551/5149]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2012_Vol9 No.6 |
| 推荐引用方式 GB/T 7714 | MENG Lubo,LI Tianbin,XU Jin,et al. Deformation and Failure Mechanism of Phyllite under the Effects of THM Coupling and Unloading[J]. Journal of Mountain Science,2012,9(6):788-797. |
| APA | MENG Lubo,LI Tianbin,XU Jin,CHEN Guoqing,MA Hongming,&YIN Hongyu.(2012).Deformation and Failure Mechanism of Phyllite under the Effects of THM Coupling and Unloading.Journal of Mountain Science,9(6),788-797. |
| MLA | MENG Lubo,et al."Deformation and Failure Mechanism of Phyllite under the Effects of THM Coupling and Unloading".Journal of Mountain Science 9.6(2012):788-797. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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