Analysis of EDZ Development of Columnar Jointed Rock Mass in the Baihetan Diversion Tunnel
文献类型：期刊论文
| 作者 | Jiang, Quan2; Hao, Xian-Jie2; Feng, Xia-Ting2 ; Yang, Cheng-Xiang1; Li, Shao-Jun2
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| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2016 |
| 卷号 | 49期号:4页码:1289-1312 |
| 关键词 | Columnar jointed rock mass Excavation damaged zone Time-dependent behaviour Long-term stability |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-015-0829-4 |
| 英文摘要 | Due to the time dependency of the crack propagation, columnar jointed rock masses exhibit marked time-dependent behaviour. In this study, in situ measurements, scanning electron microscope (SEM), back-analysis method and numerical simulations are presented to study the time-dependent development of the excavation damaged zone (EDZ) around underground diversion tunnels in a columnar jointed rock mass. Through in situ measurements of crack propagation and EDZ development, their extent is seen to have increased over time, despite the fact that the advancing face has passed. Similar to creep behaviour, the time-dependent EDZ development curve also consists of three stages: a deceleration stage, a stabilization stage, and an acceleration stage. A corresponding constitutive model of columnar jointed rock mass considering time-dependent behaviour is proposed. The time-dependent degradation coefficient of the roughness coefficient and residual friction angle in the Barton-Bandis strength criterion are taken into account. An intelligent back-analysis method is adopted to obtain the unknown time-dependent degradation coefficients for the proposed constitutive model. The numerical modelling results are in good agreement with the measured EDZ. Not only that, the failure pattern simulated by this time-dependent constitutive model is consistent with that observed in the scanning electron microscope (SEM) and in situ observation, indicating that this model could accurately simulate the failure pattern and time-dependent EDZ development of columnar joints. Moreover, the effects of the support system provided and the in situ stress on the time-dependent coefficients are studied. Finally, the long-term stability analysis of diversion tunnels excavated in columnar jointed rock masses is performed. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000373158200011 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3852]  |
| 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.Northeastern Univ, Sch Resources & Civil Engn 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; |
| 推荐引用方式 GB/T 7714 | Jiang, Quan,Hao, Xian-Jie,Feng, Xia-Ting,et al. Analysis of EDZ Development of Columnar Jointed Rock Mass in the Baihetan Diversion Tunnel[J]. ROCK MECHANICS AND ROCK ENGINEERING,2016,49(4):1289-1312. |
| APA | Jiang, Quan,Hao, Xian-Jie,Feng, Xia-Ting,Yang, Cheng-Xiang,&Li, Shao-Jun.(2016).Analysis of EDZ Development of Columnar Jointed Rock Mass in the Baihetan Diversion Tunnel.ROCK MECHANICS AND ROCK ENGINEERING,49(4),1289-1312. |
| MLA | Jiang, Quan,et al."Analysis of EDZ Development of Columnar Jointed Rock Mass in the Baihetan Diversion Tunnel".ROCK MECHANICS AND ROCK ENGINEERING 49.4(2016):1289-1312. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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