Effects of bedding planes on mechanical characteristics and crack evolution of rocks containing a single pre-existing flaw
文献类型：期刊论文
| 作者 | Liu, Liwang1,2; Li, Haibo1,2 ; Chen, Shihai3; Shao, Zhushan4; Zhou, Chuanbo5; Fu, Shuaiyang1,2
|
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2021-11-01 |
| 卷号 | 293页码:18 |
| 关键词 | Discrete element method Bedding plane Pre-existing flaw Mechanical characteristics Crack evolution Rock slope stability |
| ISSN号 | 0013-7952 |
| DOI | 10.1016/j.enggeo.2021.106325 |
| 英文摘要 | The existence of bedding planes in rock materials has an obvious impact on the material mechanical properties and the failure process of engineering projects. In this study, a series of pre-cracked models with different bedding plane properties (i.e., strength reduction factor, bedding plane angle and spacing) were established and simulated to fail under the uniaxial compression. The results indicate that the increases of the strength reduction factor and the bedding plane spacing lead to the increasing peak strength, the change of peak strength regarding the bedding plane angle presents a concave upward trend. In terms of crack evolution, the proportion of cracks formed in rock matrix increases concerning the increasing strength reduction factor and bedding plane spacing, the abovementioned crack proportion in models with increasing bedding plane angles firstly decreases and then increases. The rock matrix has higher mechanical characteristics than bedding planes, the change of crack proportion can account for the changing peak strength from the microscopic viewpoint. By summarizing the failure patterns, the failure of models with the 45 degrees similar to 75 degrees bedding plane angle is induced by cracks formed in bedding planes, which can be depicted and discussed by the plane of weakness model. The above results imply that the rock slope stability can be evaluated by analyzing bedding plane properties in the field. |
| 资助项目 | National Key R&D Program of China[2020YFA0711802] ; National Natural Science Foundation of China[41525009] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000696814500039 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/27907]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Liu, Liwang |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Huaqiao Univ, Xiamen 361021, Peoples R China 4.Xian Univ Architecture & Technol, Sch Civil Engn, Xian 710055, Peoples R China 5.China Univ Geosci Wuhan, Fac Engn, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Liwang,Li, Haibo,Chen, Shihai,et al. Effects of bedding planes on mechanical characteristics and crack evolution of rocks containing a single pre-existing flaw[J]. ENGINEERING GEOLOGY,2021,293:18. |
| APA | Liu, Liwang,Li, Haibo,Chen, Shihai,Shao, Zhushan,Zhou, Chuanbo,&Fu, Shuaiyang.(2021).Effects of bedding planes on mechanical characteristics and crack evolution of rocks containing a single pre-existing flaw.ENGINEERING GEOLOGY,293,18. |
| MLA | Liu, Liwang,et al."Effects of bedding planes on mechanical characteristics and crack evolution of rocks containing a single pre-existing flaw".ENGINEERING GEOLOGY 293(2021):18. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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