Influence of intermediate principal stress on the mechanical properties of rocks containing fractures
文献类型：期刊论文
| 作者 | Zheng, Z.1,3; Feng, X-T2,3 |
| 刊名 | GEOTECHNIQUE LETTERS
 |
| 出版日期 | 2020-06-01 |
| 卷号 | 10期号:2页码:82-87 |
| 关键词 | bearing capacity laboratory tests rocks/rock mechanics |
| ISSN号 | 2049-825X |
| DOI | 10.1680/jgele.19.00092 |
| 英文摘要 | The excavation fracture zones develop during the staged excavation of caverns and tunnels, which still have bearing capacity. However, further excavation and support activities will change the stress state in these areas until these activities cease. The influence of intermediate principal stress, sigma(2), on the strength and deformation characteristics of the surrounding rocks is not clear. In this paper, multi-step true triaxial tests are carried out on rock specimens containing stress-induced fractures to investigate the influence of sigma(2) on the mechanical properties of these specimens. The experimental results show that Young's modulus decreases with decreasing sigma(2), while the ratios of deformation in the two lateral directions increase. However, due to the fractures induced by true triaxial stress parallel to sigma(2), this fractured rock strength is not influenced by sigma(2), so a strength criterion that does not consider sigma(2) effect should be adopted in this failure pattern. This study deepens the understanding of the deformation and the bearing capacity of surrounding rocks. |
| 资助项目 | National Natural Science Foundation of China[51621006] ; 111 project[B17009] ; CAS Key Research Programme of Frontier Sciences[QYZDJ-SSW-DQC016] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000590269700001 |
| 出版者 | ICE PUBLISHING |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25120]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zheng, Z. |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China 2.Northeastern Univ, Minist Educ Safe Min Deep Met Mines, Key Lab, Shenyang, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Z.,Feng, X-T. Influence of intermediate principal stress on the mechanical properties of rocks containing fractures[J]. GEOTECHNIQUE LETTERS,2020,10(2):82-87. |
| APA | Zheng, Z.,&Feng, X-T.(2020).Influence of intermediate principal stress on the mechanical properties of rocks containing fractures.GEOTECHNIQUE LETTERS,10(2),82-87. |
| MLA | Zheng, Z.,et al."Influence of intermediate principal stress on the mechanical properties of rocks containing fractures".GEOTECHNIQUE LETTERS 10.2(2020):82-87. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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