Analysis of large deformation of deep-buried brittle rock tunnel in strong tectonic active area based on macro and microcrack evolution
文献类型：期刊论文
| 作者 | Bao, Han1; Liu, Changqing1; Liang, Ning2,4; Lan, Hengxing3; Yan, Changgen1; Xu, Xunhui1 |
| 刊名 | ENGINEERING FAILURE ANALYSIS
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 138页码:17 |
| ISSN号 | 1350-6307 |
| 关键词 | Tunnel Large deformation Brittle surrounding rock Macro and microcracks evolution Tectonic activity |
| DOI | 10.1016/j.engfailanal.2022.106351 |
| 英文摘要 | The large deformation is a common engineering problem during tunnel excavation. For brittle rock tunnels, the large deformation is closely related to the rock mass structure. In this study, taking the Guanshan tunnel as an example, large deformation of a deep-buried brittle rock tunnel in a strong tectonic active area was analyzed. The large deformation was explained in terms of the surrounding rock (diorite) mechanical properties and the development and evolution of macro and microcracks. The results showed that the diorite in the Guanshan mountain is characterized by high strength and brittleness. However, numerous microcracks are developed in the diorite, which can easily induce a cataclastic brittle failure of the surrounding rock by the transformation of the stress field. In terms of the spatial distribution, the macro and microcracks in the sur-rounding rock have a good unified relationship, whose development mechanism is related to strong tectonic activity. The stress environment of the surrounding rock changed during the tunnel excavation. A borehole camera revealed that the large deformation of the Guanshan tunnel is synthetically influenced by the macro and microcracks in the surrounding rock. The defor-mation includes the relaxation of the original macrocracks, fracture of the microcracks, and rock dilatation caused by the opening of the microcracks, among which the fracture of microcracks is the dominance. This study provides a new concept for analyzing large deformation in brittle rock tunnels, indicating that the negative effects on the stability of the surrounding rock induced by the development and evolution of microcracks should be fully considered in strong tectonic active areas. |
| WOS关键词 | UNDERGROUND CAVERN GROUP ; EXCAVATION DAMAGED ZONE ; SOFT ; FAILURE ; MODEL ; MASS ; MECHANISMS ; POWERHOUSE |
| 资助项目 | National Natural Science Foundation of China[42177142] ; National Natural Science Foundation of China[41790443,41927806] ; National Natural Science Foundation of China[41941019] ; National Key R&D Program of China[2019YFC1520601] ; Natural Science Foundation of Shaanxi Province[2020JQ-349] |
| WOS研究方向 | Engineering ; Materials Science |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000798986300003 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of Shaanxi Province ; Natural Science Foundation of Shaanxi Province ; Natural Science Foundation of Shaanxi Province ; Natural Science Foundation of Shaanxi Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of Shaanxi Province ; Natural Science Foundation of Shaanxi Province ; Natural Science Foundation of Shaanxi Province ; Natural Science Foundation of Shaanxi Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of Shaanxi Province ; Natural Science Foundation of Shaanxi Province ; Natural Science Foundation of Shaanxi Province ; Natural Science Foundation of Shaanxi Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of Shaanxi Province ; Natural Science Foundation of Shaanxi Province ; Natural Science Foundation of Shaanxi Province ; Natural Science Foundation of Shaanxi Province |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/105932]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Liang, Ning |
| 作者单位 | 1.Changan Univ, Sch Highway, Xi'an 710064, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 3.Changan Univ, Sch Geol Engn & Geomatics, Xi'an 710064, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bao, Han,Liu, Changqing,Liang, Ning,et al. Analysis of large deformation of deep-buried brittle rock tunnel in strong tectonic active area based on macro and microcrack evolution[J]. ENGINEERING FAILURE ANALYSIS,2022,138:17. |
| APA | Bao, Han,Liu, Changqing,Liang, Ning,Lan, Hengxing,Yan, Changgen,&Xu, Xunhui.(2022).Analysis of large deformation of deep-buried brittle rock tunnel in strong tectonic active area based on macro and microcrack evolution.ENGINEERING FAILURE ANALYSIS,138,17. |
| MLA | Bao, Han,et al."Analysis of large deformation of deep-buried brittle rock tunnel in strong tectonic active area based on macro and microcrack evolution".ENGINEERING FAILURE ANALYSIS 138(2022):17. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。