Study of the Mechanical Characteristics and Crack Evolution of Layered Rocks Using Voronoi Block-Based Finite-Discrete Element Method
文献类型：期刊论文
| 作者 | Zhang, Shirui1,2; Qiu, Shili2; Jiang, Quan2; Zheng, Hong2; Xie, Zhenkun1,2; Fang, Yuheng1,2 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2025-01-12 |
| 页码 | 20 |
| 关键词 | Layered rock FDEM Voronoi tessellation Fracture mechanism Tunnel stability |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-024-04372-w |
| 英文摘要 | Anisotropic rock has a very different failure mechanism from isotropic rock, and the layers significantly influence the mechanical properties and failure process of surrounding rock. In this study, the bedding plane structure was coupled with the proposed Voronoi grain-based breakable block model (VGBBM) to characterize the layered hard rock, and a simple and effective parameter calibration method was proposed to conduct uniaxial and triaxial compression tests. The numerical results show that the VGBBM can effectively capture the adaptive fracture process under the interaction between the bedding plane and the rock matrix. With increasing layer angle, the following failure modes sequentially occur: matrix dominated (type I), mixed matrix-bedding plane (type II), bedding plane dominated (type III), and type II again. The reasonable range for the strength reduction factor is 0.6-0.8. Under different layer angles, the transition of the failure mechanism controlled by the confining pressure is significantly different. Moreover, the simulation of the interaction between rock and bolts reveals that the confining pressure and reinforcement angle significantly affects the reinforcement effect. This study provides useful insights for the stability analysis of layered surrounding rock and optimization of the support design. |
| 资助项目 | National Natural Science Foundation of China[42377172] ; National Natural Science Foundation of China[52325905] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001394849600001 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/37868]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Qiu, Shili |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Shirui,Qiu, Shili,Jiang, Quan,et al. Study of the Mechanical Characteristics and Crack Evolution of Layered Rocks Using Voronoi Block-Based Finite-Discrete Element Method[J]. ROCK MECHANICS AND ROCK ENGINEERING,2025:20. |
| APA | Zhang, Shirui,Qiu, Shili,Jiang, Quan,Zheng, Hong,Xie, Zhenkun,&Fang, Yuheng.(2025).Study of the Mechanical Characteristics and Crack Evolution of Layered Rocks Using Voronoi Block-Based Finite-Discrete Element Method.ROCK MECHANICS AND ROCK ENGINEERING,20. |
| MLA | Zhang, Shirui,et al."Study of the Mechanical Characteristics and Crack Evolution of Layered Rocks Using Voronoi Block-Based Finite-Discrete Element Method".ROCK MECHANICS AND ROCK ENGINEERING (2025):20. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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