Visualization study on stress evolution and crack propagation of jointed rock mass under blasting load
文献类型：期刊论文
| 作者 | Liang, Xintong4; Ding, Chenxi1,4; Zhu, Xinguang3; Zhou, Jun3; Chen, Cheng4; Guo, Xiao2 |
| 刊名 | ENGINEERING FRACTURE MECHANICS
 |
| 出版日期 | 2024-02-09 |
| 卷号 | 296页码:15 |
| ISSN号 | 0013-7944 |
| 关键词 | Blasting load Joint Stress evolution Crack propasation In-situ stress |
| DOI | 10.1016/j.engfracmech.2023.109833 |
| 通讯作者 | Ding, Chenxi(dingcx91@sina.com) |
| 英文摘要 | In this study, the simultaneous observation of stress wave propagation and crack propagation was realized through the wave-crack synchronous test, which clarified the stress wave propagation and superposition process of rock blasting with jointed rock. The variation law of crack dynamic parameters (stress intensity factor and propagation velocity) was also revealed. On this basis, numerical simulation study was performed using the CDEM method to analyze the influence mechanism of joint length and in-situ stress condition on the blasting stress evolution and crack propagation. The results showed that the joint had significant effect on the distribution state, the evolution law and the propagation process of blasting crack. The blasting stress wave diffracted from the joint end, propagated along the joint plane and superimposed, causing the stress concentration and crack initiation and propagation at the joint end. The longer the joint length, the longer the diffraction time and propagation time of the blasting stress wave along the joint plane. In addition, the biaxial equal in-situ stresses inhibited the propagation of the blasting crack. The inhibition effect was significantly strengthened with the increase in in-situ stress, while it promoted the initiation and propagation of the blasting crack in the middle of the joint. |
| WOS关键词 | MODEL |
| WOS研究方向 | Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001157174400001 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/94442]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 通讯作者 | Ding, Chenxi |
| 作者单位 | 1.Anhui Univ Sci & Technol, State Key Lab Min Response & Disaster Prevent & Co, Huainan 232001, Peoples R China 2.Univ Sci & Technol Beijing, Sch Math & Phys, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China 4.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liang, Xintong,Ding, Chenxi,Zhu, Xinguang,et al. Visualization study on stress evolution and crack propagation of jointed rock mass under blasting load[J]. ENGINEERING FRACTURE MECHANICS,2024,296:15. |
| APA | Liang, Xintong,Ding, Chenxi,Zhu, Xinguang,Zhou, Jun,Chen, Cheng,&Guo, Xiao.(2024).Visualization study on stress evolution and crack propagation of jointed rock mass under blasting load.ENGINEERING FRACTURE MECHANICS,296,15. |
| MLA | Liang, Xintong,et al."Visualization study on stress evolution and crack propagation of jointed rock mass under blasting load".ENGINEERING FRACTURE MECHANICS 296(2024):15. |
入库方式： OAI收割
来源：力学研究所
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