Numerical Analysis of Directional Rock Blasting with Continuous-Discontinuous Element Method
文献类型：期刊论文
| 作者 | Li, Yunpeng; Feng C(冯春) ; Zhang, Yiming
|
| 刊名 | KSCE JOURNAL OF CIVIL ENGINEERING
 |
| 出版日期 | 2023-06-17 |
| ISSN号 | 1226-7988 |
| 关键词 | Directional rock blasting Continuous-discontinuous element method (CDEM) Fracture degree Damage factor Numerical simulations |
| DOI | 10.1007/s12205-023-0157-2 |
| 英文摘要 | When simulating the directional blasting process, many researchers focus on the cutting and splitting effects who might pay more attention on the crushing effects when studying conventional cut blasting. In this case, a numerical tool capable of capturing the strong discontinuity processes of quasi-brittle materials is highly preferable, where many blasting parameters should be calibrated and inputted. In this work, a hybrid finite-discrete elements method with explicit iterative procedure named Continuous-Discontinuous Elements Method (CDEM) is adopted to study the directional rock blasting processes. Landau model is used to capture the detonation effects, where the parameters are calibrated by comparing to the results provided by published literatures. We found that: i) The crack propagation mode of directional rock blasting is similar to those found in Brazilian splitting tests where the crack initiates from the midpoint of the connecting line of blast holes; ii) Compared with traditional cut blasting, the free surface has no significant influence on the blasting effect of directional cut blasting, while the spacing of the hole has great influence on the cutting effect. The index of fracture degree can be used to evaluate the blasting effect quantitatively. This work partly reveals some cracking patterns and rules of directional rock blasting, which may assist the engineers to develop improved precise blasting technologies. |
| 分类号 | Q3 |
| WOS研究方向 | Engineering, Civil |
| 语种 | 英语 |
| WOS记录号 | WOS:001009401200004 |
| 资助机构 | National Natural Science Foundation of China [52178324] ; National Key Research and Development Project of China ; Ministry of Science and Technology of China [2018YFC1505504] |
| 其他责任者 | Feng, C (corresponding author), Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China. |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/92428]  |
| 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.{Li Yunpeng, Zhang Yiming} Hebei Univ Technol Sch Civil & Transportat Engn Tianjin 300401 Peoples R China 2.{Feng Chun} Chinese Acad Sci Key Lab Mech Fluid Solid Coupling Syst Inst Mech Beijing 100190 Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yunpeng,Feng C,Zhang, Yiming. Numerical Analysis of Directional Rock Blasting with Continuous-Discontinuous Element Method[J]. KSCE JOURNAL OF CIVIL ENGINEERING,2023. |
| APA | Li, Yunpeng,冯春,&Zhang, Yiming.(2023).Numerical Analysis of Directional Rock Blasting with Continuous-Discontinuous Element Method.KSCE JOURNAL OF CIVIL ENGINEERING. |
| MLA | Li, Yunpeng,et al."Numerical Analysis of Directional Rock Blasting with Continuous-Discontinuous Element Method".KSCE JOURNAL OF CIVIL ENGINEERING (2023). |
入库方式： OAI收割
来源：力学研究所
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