An Index for Estimating the Stability of Brittle Surrounding Rock Mass: FAI and its Engineering Application
文献类型：期刊论文
| 作者 | Feng, X. T.; Zhou, H.; Zhang, C. Q. |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2011 |
| 卷号 | 44期号:4页码:401-414 |
| 关键词 | Failure approach index Yield surface Equivalent plastic shear strain Stability estimation Underground powerhouse Tunnel |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-011-0150-9 |
| 英文摘要 | Based on the geometric analysis of the relationship between the stress state at a point and the yield surface defined in the principal stress space, a coefficient omega is set up as an estimation index to describe the stress-induced yield risk. After yield, the equivalent plastic shear strains is usually used to characterize the failure degree (FD) of the material and adopted here as an index of the damage degree for the surrounding rock masses. Then, a unified variable combining omega and FD, named failure approaching index (FAI), is constructed to estimate the stability of rock mass which may be at different deformation stages. The formulas of FAI are derived for some popular yield criteria in geomechanics. Details for such development are addressed in the paper. Its rationality is verified by numerical simulation and comparative analysis of the conventional triaxial compression tests and typical tunnel projects. In addition, the method for applying FAI to the stability estimation of surrounding rock mass is proposed. As examples, the stability of the underground powerhouse, access tunnels and headrace tunnels at the Jinping II hydropower station are estimated by making use of the method we presented. The results indicate that not only is the index rational in mechanics, but the theory also has good expansibility, and the estimation methods are simple and practical as well. It is easier for field engineers to analyze and understand the numerical results. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000291602800002 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3294]  |
| 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 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Feng, X. T.,Zhou, H.,Zhang, C. Q.. An Index for Estimating the Stability of Brittle Surrounding Rock Mass: FAI and its Engineering Application[J]. ROCK MECHANICS AND ROCK ENGINEERING,2011,44(4):401-414. |
| APA | Feng, X. T.,Zhou, H.,&Zhang, C. Q..(2011).An Index for Estimating the Stability of Brittle Surrounding Rock Mass: FAI and its Engineering Application.ROCK MECHANICS AND ROCK ENGINEERING,44(4),401-414. |
| MLA | Feng, X. T.,et al."An Index for Estimating the Stability of Brittle Surrounding Rock Mass: FAI and its Engineering Application".ROCK MECHANICS AND ROCK ENGINEERING 44.4(2011):401-414. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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