Rock fracture mechanism of buffer blasting with cushion layer at the borehole bottom
文献类型：期刊论文
| 作者 | Zhu XG(朱心广)3,4 ; Ding, Chenxi4; Sui, Zhe2; Su, Hong1; Guo, Xu4
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| 刊名 | INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
 |
| 出版日期 | 2025-02-01 |
| 卷号 | 32期号:2页码:325-334 |
| 关键词 | bottom cushion layer blasting crack propagation continuum-discontinuum element method dynamic stress intensity factor |
| ISSN号 | 1674-4799 |
| DOI | 10.1007/s12613-024-2941-5 |
| 通讯作者 | Ding, Chenxi(dingcx91@sina.com) |
| 英文摘要 | This study primarily investigates the rock fracture mechanism of bottom cushion layer blasting and explores the effects of the bottom cushion layer on rock fragmentation. It involves analyses of the evolution patterns of blasting stress, characteristics of crack distribution, and rock fracture features in the specimens. First, blasting model experiments were carried out using the dynamic caustics principle to investigate the influence of bottom cushion layers and initiation methods on the integrity of the bottom rock mass. The experimental results indicate that the combined use of bottom cushion layers and inverse initiation effectively protects the integrity of the bottom rock mass. Subsequently, the process of stress wave propagation and dynamic crack propagation in rocks was simulated using the continuum-discontinuum element method (CDEM) and the Landau explosion source model, with varying thicknesses of bottom cushion layers. The numerical simulation results indicate that with increasing cushion thickness, the absorption of energy generated by the explosion becomes more pronounced, resulting in fewer cracks in the bottom rock mass. This illustrates the positive role of the cushion layer in protecting the integrity of the bottom rock mass. |
| 分类号 | 一类 |
| WOS关键词 | MODEL ; WAVE |
| 资助项目 | National Natural Science Foundation of China[52204085] ; National Natural Science Foundation of China[52104074] ; Youth Science and Technology Foundation Key Laboratory for Mechanics in Fluid Solid Coupling System, Institute of Mechanics[E0XM040401] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:001383659700008 |
| 资助机构 | National Natural Science Foundation of China ; Youth Science and Technology Foundation Key Laboratory for Mechanics in Fluid Solid Coupling System, Institute of Mechanics |
| 其他责任者 | Ding, Chenxi |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/98030]  |
| 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.Anhui Univ Sci & Technol, Sch Chem & Blasting Engn, Huainan 232001, Peoples R China 2.China Univ Min & Technol Beijing, Sch Mech & Civil Engn, Beijing 100083, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 4.Univ Sci & Technol Beijing, Sch Civil & Resources Engn, Beijing 100083, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Zhu XG,Ding, Chenxi,Sui, Zhe,et al. Rock fracture mechanism of buffer blasting with cushion layer at the borehole bottom[J]. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,2025,32(2):325-334. |
| APA | 朱心广,Ding, Chenxi,Sui, Zhe,Su, Hong,&Guo, Xu.(2025).Rock fracture mechanism of buffer blasting with cushion layer at the borehole bottom.INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,32(2),325-334. |
| MLA | 朱心广,et al."Rock fracture mechanism of buffer blasting with cushion layer at the borehole bottom".INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS 32.2(2025):325-334. |
入库方式： OAI收割
来源：力学研究所
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