Spatial-temporal feature of stress field evolution for Jinping II marble excavation in high stress zone
文献类型：期刊论文
| 作者 | Chen, Z.2; Chen, B. R.1; Feng, X. T.1; Huang, S. L.1; Zhang, Z. T.2 |
| 刊名 | MATERIALS RESEARCH INNOVATIONS
 |
| 出版日期 | 2011 |
| 卷号 | 15页码:S535-S538 |
| 关键词 | Hard and brittle rock Spatial-temporal feature High stress zone Stress redistribution |
| ISSN号 | 1432-8917 |
| DOI | 10.1179/143307511X12858957676470 |
| 英文摘要 | The service tunnel of Jinping Second Stage Hydropower Station, which is covered by over 2 000 m thick rock mass and has a maximum principle stress of over 60 MPa, is used as an example to investigate laws, characteristics, ranges and velocity of stress redistribution with time along directions of parallel and perpendicular to the tunnel axes and balance time of stress field using a numerical analysis method, based on the Kelvin-Voigt-CWFS model, which is a viscoelastoplastic combination model and is adaptable for describing time dependant characteristics of hard and brittle rock mass. The result shows that the stress initially increases and then decreases gradually at the two side walls and decreases quickly at the vault. Their principal vectors rotate gradually during the stress redistribution and 90% adjustment of stress is redistributed in as early as the first several days after excavation. At equilibrium, the stress initially increases and then decreases to stability at the two side walls and increases gradually to the original stress state at the vault with increasing distance from the free face in the direction perpendicular to the tunnel axes; the stress first assembles, then decreases suddenly close to zero and finally increases to a certain value as observed profile is firstly close to and then far away from the tunnel face. The laws above mentioned are different from those obtained from middle and low stress environment. Knowing these laws, characteristic and mechanism of stress redistribution is useful for design, construction and support of the tunnel in order to prevent disaster. |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000288859000131 |
| 出版者 | MANEY PUBLISHING |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3257]  |
| 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.Beijing Vibroflotat Engn Co Ltd |
| 推荐引用方式 GB/T 7714 | Chen, Z.,Chen, B. R.,Feng, X. T.,et al. Spatial-temporal feature of stress field evolution for Jinping II marble excavation in high stress zone[J]. MATERIALS RESEARCH INNOVATIONS,2011,15:S535-S538. |
| APA | Chen, Z.,Chen, B. R.,Feng, X. T.,Huang, S. L.,&Zhang, Z. T..(2011).Spatial-temporal feature of stress field evolution for Jinping II marble excavation in high stress zone.MATERIALS RESEARCH INNOVATIONS,15,S535-S538. |
| MLA | Chen, Z.,et al."Spatial-temporal feature of stress field evolution for Jinping II marble excavation in high stress zone".MATERIALS RESEARCH INNOVATIONS 15(2011):S535-S538. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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