Evolution of fractures in the excavation damaged zone of a deeply buried tunnel during TBM construction
文献类型：期刊论文
| 作者 | Li, Shaojun1; Feng, Xia-Ting1 ; Li, Zhanhai2; Zhang, Chuanqing1; Chen, Bingrui1
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| 刊名 | INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
 |
| 出版日期 | 2012 |
| 卷号 | 55页码:125-138 |
| 关键词 | Fractures Formation and evolution Excavation damaged zone Deeply buried tunnel TBM |
| ISSN号 | 1365-1609 |
| DOI | 10.1016/j.ijrmms.2012.07.004 |
| 英文摘要 | This paper presents results of in situ measurements of fracture evolution within the excavation damaged zone (EDZ) surrounding the tunnel boring machine (TBM) excavated headrace tunnel No. 3 of Jinping II hydropower station, China. Fractures were measured by borehole images obtained with a digital panoramic borehole camera throughout the processes of tunnel excavation and support installation. Boreholes for the digital camera were pre-drilled perpendicular to the tunnel axis from a pre-excavated branch tunnel, and a series of digital images of the borehole walls were made as the TBM passed. Digital processing revealed the lithology, pre-existing fractures and characters of rock core discing of the surrounding rock mass. Processes of fracture initiation, propagation, and closure were observed, and width, occurrence and zoning of EDZ were measured. The relationship between fracture evolution and TBM construction progress is described in detail. Based on true triaxial tests and theoretical analysis of unloading conditions of deep rock masses, the occurrence of tunnelling induced new fractures at the EDZ is discussed with respect to in situ measurement results. The results provide valuable data for EDZ analysis, future designs and the construction of deeply buried tunnels using TBM. (C) 2012 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Engineering ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000310408900015 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3364]  |
| 专题 | 岩土力学所知识全产出_期刊论文 岩土力学所知识全产出 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Northeastern Univ, Sch Resources & Civil Engn |
| 推荐引用方式 GB/T 7714 | Li, Shaojun,Feng, Xia-Ting,Li, Zhanhai,et al. Evolution of fractures in the excavation damaged zone of a deeply buried tunnel during TBM construction[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2012,55:125-138. |
| APA | Li, Shaojun,Feng, Xia-Ting,Li, Zhanhai,Zhang, Chuanqing,&Chen, Bingrui.(2012).Evolution of fractures in the excavation damaged zone of a deeply buried tunnel during TBM construction.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,55,125-138. |
| MLA | Li, Shaojun,et al."Evolution of fractures in the excavation damaged zone of a deeply buried tunnel during TBM construction".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 55(2012):125-138. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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