A Novel Dynamic Fractional Mechanical Model for Rock Fracture Under True Triaxial Static-Dynamic Combined Loading and its Engineering Application
文献类型：期刊论文
| 作者 | Zheng, Zhi1,2,5; Li, Ronghua2; Li, Shaojun5; Lu, Gaoming4; Zhang, Qiang3; Qiu, Shili5 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2024-06-28 |
| 页码 | 27 |
| 关键词 | True triaxial test Static-dynamic combined loading Static and dynamic damage Fractional mechanical model Disturbance fracture degree index |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-024-04036-9 |
| 英文摘要 | The frequent far-field microdynamic disturbance caused by excavation of high-stress deep underground engineering will induce the continuous damage deterioration of surrounding rock and ultimately lead to disasters, however, the disturbance deformation and damage evolutions under true triaxial static-dynamic combined loading are unclear, and corresponding mechanical model characterizing these properties are scarce. Therefore, this study carried out a series of true triaxial static-dynamic combined loading tests to study the microdynamic disturbance characteristics of rock. The equal cyclic curve method is proposed to determine the defined disturbance critical stress of rock entering the acceleration stage. The separation methods of true triaxial static induced damage and microdynamic induced damage are proposed, and their evolution laws were investigated and the corresponding damage models were established. Further, a damage fractional mechanical model of rock was established, and the theoretical prediction curves were in reasonable agreement with the experimental results. Sensitivity analysis of static-dynamic combined stress and model parameters on disturbance deformation behaviors were further investigated, and model prediction research for the untesting conditions was also carried out to provide more understanding basis for the surrounding rock disaster mechanism and stability analysis of deep engineering under microdynamic disturbance. Numerical simulation of excavation response for typical deep buried engineering was carried out with the proposed mechanical model. Then a rock disturbance fracture degree index was proposed to realize the quantitative characterization of the location, morphology, and degree of disturbance failure in deep buried engineering surrounding rock, and found that disturbance loads promote the further expansion of the plastic zone in the surrounding rock after excavation, inducing further damage to failure. A test method for separating true triaxial static damage and disturbance damage was proposed.The threshold of rock entering the deformation acceleration stage was defined and calculated.A novel microdynamic damage fraction mechanical model was proposed, which can well characterize the experimental results.Sensitivity analysis of static and dynamic stresses and model parameters were investigated.A rock disturbance fracture degree index was proposed to evaluate disturbance failure degree of surrounding rock after excavation. |
| 资助项目 | National Natural Science Foundation of China[52109119] ; Chinese Postdoctoral Science Fund Project[2022M723408] ; Open Research Fund of State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin (China Institute of Water Resources and Hydropower Research)[IWHR-SKL-202202] ; Systematic Project of Guangxi Key Laboratory of Disaster Prevention and Engineering Safety[2020ZDK007] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001257453700003 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41805]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zheng, Zhi |
| 作者单位 | 1.Northeastern Univ, Key Lab Minist Educ Safe Min Deep Met Mines, Shenyang 110819, Peoples R China 2.Guangxi Univ, Coll Civil Engn & Architecture, State Key Lab Featured Met Mat & Life Cycle Safety, Key Lab Disaster Prevent & Struct Safety,Minist Ed, Nanning 530004, Peoples R China 3.China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China 4.China Railway Tunnel Grp Co Ltd, State Key Lab Shield Machine & Boring Technol, Zhengzhou 450001, Peoples R China 5.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 | Zheng, Zhi,Li, Ronghua,Li, Shaojun,et al. A Novel Dynamic Fractional Mechanical Model for Rock Fracture Under True Triaxial Static-Dynamic Combined Loading and its Engineering Application[J]. ROCK MECHANICS AND ROCK ENGINEERING,2024:27. |
| APA | Zheng, Zhi,Li, Ronghua,Li, Shaojun,Lu, Gaoming,Zhang, Qiang,&Qiu, Shili.(2024).A Novel Dynamic Fractional Mechanical Model for Rock Fracture Under True Triaxial Static-Dynamic Combined Loading and its Engineering Application.ROCK MECHANICS AND ROCK ENGINEERING,27. |
| MLA | Zheng, Zhi,et al."A Novel Dynamic Fractional Mechanical Model for Rock Fracture Under True Triaxial Static-Dynamic Combined Loading and its Engineering Application".ROCK MECHANICS AND ROCK ENGINEERING (2024):27. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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。