Study on mechanism of macro failure and micro fracture of local nearly horizontal stratum in super-large section and deep buried tunnel
文献类型：期刊论文
| 作者 | Li, Shu-cai2; Wang, Jian-hua2; Chen, Wei-zhong1,2; Li, Li-ping2; Zhang, Qian-qing2; He, Peng2 |
| 刊名 | GEOMECHANICS AND ENGINEERING
 |
| 出版日期 | 2016 |
| 卷号 | 11期号:2页码:253-267 |
| 关键词 | instability mechanism nearly horizontal stratum macro failure micro fracture comprehensive failure criteria |
| ISSN号 | 2005-307X |
| DOI | 10.12989/gae.2016.11.2.253 |
| 英文摘要 | The stability of surrounding rock will be poor when the tunnel is excavated through nearly horizontal stratum. In this paper, the instability mechanism of local nearly horizontal stratum in super-large section and deep buried tunnel is revealed by the analysis of the macro failure and micro fracture. A structural model is proposed to explain the mechanics of surrounding rock collapse under the action of stress redistribution and shed light on the macroscopic analytical approach of the stability of surrounding rock. Then, some highly effective formulas applied in the tunnel engineering are developed according to the theory of mixed-mode micro fracture. And well-documented field case is made to demonstrate the effectiveness and accuracy of the proposed analytical methods of mixed-mode fracture. Meanwhile, in order to make the more accurate judgment about yield failure of rock mass, a series of comprehensive failure criteria are formed. In addition, the relationship between the nonlinear failure criterion and K-I and K-II of micro fracture is established to make the surrounding rock failure criterion more comprehensive and accurate. Further, the influence of the parameters related to the tension-shear mixed-mode fracture and compression-shear mixed-mode fracture on the propagation of rock crack is analyzed. Results show that sigma(3) changes linearly with the change of sigma(1). And the change rate is related to beta, angle between the cracks and sigma(1). The proposed simple analytical approach is economical and efficient, and suitable for the analysis of local nearly horizontal stratum in super-large section and deep buried tunnel. |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000389778100005 |
| 出版者 | TECHNO-PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3913]  |
| 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, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn 2.Shandong Univ, Res Ctr Geotech & Struct Engn ; |
| 推荐引用方式 GB/T 7714 | Li, Shu-cai,Wang, Jian-hua,Chen, Wei-zhong,et al. Study on mechanism of macro failure and micro fracture of local nearly horizontal stratum in super-large section and deep buried tunnel[J]. GEOMECHANICS AND ENGINEERING,2016,11(2):253-267. |
| APA | Li, Shu-cai,Wang, Jian-hua,Chen, Wei-zhong,Li, Li-ping,Zhang, Qian-qing,&He, Peng.(2016).Study on mechanism of macro failure and micro fracture of local nearly horizontal stratum in super-large section and deep buried tunnel.GEOMECHANICS AND ENGINEERING,11(2),253-267. |
| MLA | Li, Shu-cai,et al."Study on mechanism of macro failure and micro fracture of local nearly horizontal stratum in super-large section and deep buried tunnel".GEOMECHANICS AND ENGINEERING 11.2(2016):253-267. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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