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Rockburst characteristics and numerical simulation based on a new energy index: a case study of a tunnel at 2,500 m depth
文献类型：期刊论文
| 作者 | Xiang, Tian-Bing1; Feng, Xia-Ting1 ; Jiang, Quan1; Su, Guo-Shao2
|
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2010 |
| 卷号 | 69期号:3页码:381-388 |
| 关键词 | Rockburst character Deep tunnel Local energy release rate Numerical simulation Rock mechanics |
| ISSN号 | 1435-9529 |
| DOI | 10.1007/s10064-010-0275-1 |
| 英文摘要 | Rockburst is one of the most difficult problems encountered in the pilot tunnels of the Jinping II hydropower station, where the rock cover is up to 2,500 m. Some typical characteristics of the rockburst events are summarized. These events indicate the intrinsic reason of rockburst is energy release. In order to understand the outburst mechanism, a new energy index, the Local Energy Release Rate (LERR), is put forward to simulate the conditions causing rockburst. By tracking the peak and trough values of elastic strain energy intensity before and after brittle failure, the LERR was developed to help understand rockburst from the viewpoint of energy release. To test its reliability, the brittle breakage of Mine-by tunnel rock in Canada and two rock bursts in the Jinping pilot tunnels were simulated. The results showed that LERR can satisfactorily predict the intensity of a rockburst and the depth of the outburst pit. Although it is not yet possible to determine thresholds at which rockbursts will occur, the study indicates the potential of LERR for evaluating rockbursts in deep underground excavations. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000280257900007 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3236]  |
| 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.Guangxi Univ, Dept Civil & Architecture Engn, |
| 推荐引用方式 GB/T 7714 | Xiang, Tian-Bing,Feng, Xia-Ting,Jiang, Quan,et al. Rockburst characteristics and numerical simulation based on a new energy index: a case study of a tunnel at 2,500 m depth[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2010,69(3):381-388. |
| APA | Xiang, Tian-Bing,Feng, Xia-Ting,Jiang, Quan,&Su, Guo-Shao.(2010).Rockburst characteristics and numerical simulation based on a new energy index: a case study of a tunnel at 2,500 m depth.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,69(3),381-388. |
| MLA | Xiang, Tian-Bing,et al."Rockburst characteristics and numerical simulation based on a new energy index: a case study of a tunnel at 2,500 m depth".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 69.3(2010):381-388. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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