Experimental study on blasthole fracturing caused by stress waves from a cylindrical charge
文献类型：期刊论文
| 作者 | Ren, Meng3; Yue, Zhongwen2,3; Zhou J(周俊)1 ; Wang, Xu3; Xue, Kejun3; Wang, Peng3; Xu, Shengnan3
|
| 刊名 | THEORETICAL AND APPLIED FRACTURE MECHANICS
 |
| 出版日期 | 2025-10-01 |
| 卷号 | 139页码:14 |
| 关键词 | Drilling and blasting Cylindrical charge Blasthole fracture Stress wave propagation Strain field evolution |
| ISSN号 | 0167-8442 |
| DOI | 10.1016/j.tafmec.2025.105020 |
| 通讯作者 | Yue, Zhongwen(zwyue75@cumtb.edu.cn) ; Zhou, Jun(zhoujun@imech.ac.cn) |
| 英文摘要 | During the detonation of a cylindrical charge, the advancing detonation wave continuously alters the stress wave field. This causes dynamic changes in the surrounding stress and strain distributions. These evolving fields lead to distinct fracturing patterns around the blasthole, which are still not fully understood. To investigate this process, dynamic photoelasticity and Digital Image Correlation experiments were performed. Post-blast observations revealed numerous dense cracks along the blasthole wall. The cracks were shortest near the initiation point and became progressively longer toward the tail end of the explosive column. This pattern is linked to the evolution of stress waves during detonation. As the detonation wave advanced, new stress waves were continuously generated and superimposed on earlier ones. This led to increasing stress intensity near the detonation front. In the experiment, the detonation velocity was lower than the P-wave velocity but higher than the S-wave velocity. The P-waves propagated ahead of the detonation front and formed a fan-shaped superposition zone. The S-waves lagged behind and formed a conical zone. Photoelastic results showed that fringe order and principal stress difference increased along the detonation direction. DIC measurements confirmed that the strain also increased in this direction. The rise in stress and strain explains the progressive increase in crack length along the blasthole wall. |
| 分类号 | 一类 |
| WOS关键词 | ROCK ; DIFFRACTION ; DAMAGE |
| 资助项目 | National Natural Science Foundation of China[52174094] ; National Natural Science Foundation of China[52474117] ; National Key Research and Development Program of China[2021YFC2902103] |
| WOS研究方向 | Engineering ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001500957200002 |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China |
| 其他责任者 | Yue, Zhongwen，Zhou, Jun |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/101736]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China 2.China Univ Min & Technol Beijing, Modern Blasting Technol Applicat Res Inst, Beijing 100083, Peoples R China; 3.China Univ Min & Technol Beijing, Sch Mech & Civil Engn, Beijing 100083, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Ren, Meng,Yue, Zhongwen,Zhou J,et al. Experimental study on blasthole fracturing caused by stress waves from a cylindrical charge[J]. THEORETICAL AND APPLIED FRACTURE MECHANICS,2025,139:14. |
| APA | Ren, Meng.,Yue, Zhongwen.,周俊.,Wang, Xu.,Xue, Kejun.,...&Xu, Shengnan.(2025).Experimental study on blasthole fracturing caused by stress waves from a cylindrical charge.THEORETICAL AND APPLIED FRACTURE MECHANICS,139,14. |
| MLA | Ren, Meng,et al."Experimental study on blasthole fracturing caused by stress waves from a cylindrical charge".THEORETICAL AND APPLIED FRACTURE MECHANICS 139(2025):14. |
入库方式： OAI收割
来源：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。