A Novel Continuous-Discontinuous Multi-Field Numerical Model for Rock Blasting
文献类型：期刊论文
| 作者 | Li, Yunpeng3; Feng C(冯春)2 ; Ding, Chenxi1; Zhang, Yiming3
|
| 刊名 | APPLIED SCIENCES-BASEL
 |
| 出版日期 | 2022-11-01 |
| 卷号 | 12期号:21页码:13 |
| 关键词 | rock blasting continuous-discontinuous element method (CDEM) multi-field coupled processes dynamic loading gas permeation numerical simulations |
| DOI | 10.3390/app122111123 |
| 通讯作者 | Feng, Chun(fengchun@imech.ac.cn) |
| 英文摘要 | During blasting, rock failure is caused by blasting wave and explosive gas pressure, as a multi-field coupled process. Most numerical models focus on the effect of blasting wave where the gas pressure is commonly accounted for by empirical relations, ignoring the penetration and permeation of gas flow in cracks. This can underestimate the failure region. In this work, a novel multi-field model is developed in the framework of a continuous-discontinuous element method (CDEM), which is a coupled finite-discrete method with explicit integration strategy. The deformation and cracking of rock mass and the distribution of gas pressure are captured. The proposed method is verified by comparing the results to other results provided in published literature. Especially, by simulating the cases with blocked and unblocked blasting hole, we found that: (i) The fracture degree of the case with blocked blasting hole was 30% higher than that of the unblocked blasting hole. (ii) The radial main cracks in the fracture area are mainly caused by the explosive gas, and the tiny and dense cracks near the hole are induced by the explosion stress wave. (iii) The explosion crushing zone is mainly formed by the action of explosion stress wave, while the crack zone is formed by the combined action of the explosion stress wave and explosive gas. The proposed method provides a useful tool to properly simulate a rock blasting process. |
| 分类号 | 二类 |
| WOS关键词 | MANIFOLD METHOD ; CRACK-PROPAGATION ; EMBEDDED APPROACH ; MESHFREE METHOD ; FIELD ; SIMULATION ; STRESS ; CDEM |
| 资助项目 | National Natural Science Foundation of China[52178324] ; National Key Research and Development Project of China ; Ministry of Science and Technology of China[2018YFC1505504] |
| WOS研究方向 | Chemistry ; Engineering ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000883576400001 |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Project of China ; Ministry of Science and Technology of China |
| 其他责任者 | Feng, Chun |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/90825]  |
| 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.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 3.Hebei Univ Technol, Sch Civil & Transportat Engn, Tianjin 300401, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Li, Yunpeng,Feng C,Ding, Chenxi,et al. A Novel Continuous-Discontinuous Multi-Field Numerical Model for Rock Blasting[J]. APPLIED SCIENCES-BASEL,2022,12(21):13. |
| APA | Li, Yunpeng,冯春,Ding, Chenxi,&Zhang, Yiming.(2022).A Novel Continuous-Discontinuous Multi-Field Numerical Model for Rock Blasting.APPLIED SCIENCES-BASEL,12(21),13. |
| MLA | Li, Yunpeng,et al."A Novel Continuous-Discontinuous Multi-Field Numerical Model for Rock Blasting".APPLIED SCIENCES-BASEL 12.21(2022):13. |
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。