Numerical analysis of deep hole multi-stage cut blasting of vertical shaft using a continuum-based discrete element method
文献类型：期刊论文
| 作者 | Ding, Chenxi3; Yang, Renshu2,3; Zheng, Changda2; Yang, Liyun2; He, Songlin3; Feng C(冯春)1
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| 刊名 | ARABIAN JOURNAL OF GEOSCIENCES
 |
| 出版日期 | 2021-06-01 |
| 卷号 | 14期号:12页码:11 |
| ISSN号 | 1866-7511 |
| 关键词 | Vertical shaft Cut blasting Continuum-based discrete element method Fractal damage Fracture degree |
| DOI | 10.1007/s12517-021-07425-4 |
| 通讯作者 | Feng, Chun(fengchun@imech.ac.cn) |
| 英文摘要 | Due to the high in situ stress of the deep rock mass and the restraining effect of the surrounding rock, the deep hole blasting of vertical shaft faces the problems of low borehole utilization rate and poor blasting effect. In this regard, this paper proposes a deep hole multi-stage cut blasting technology of vertical shaft. Preliminary engineering practice shows that such cut blasting technology can make better use of explosive energy, reduce the restraining effect of surrounding rock, and increase the borehole utilization rate. Furthermore, based on the continuum-based discrete element method (CDEM), the fractal damage, fragmentation, and blasting cavity characteristics of deep hole multi-stage cut blasting of vertical shaft are studied and analyzed. The results show that in the multi-stage cut blasting of vertical shaft, if the length proportion of the first stage is too small or too large, it will lead to poor cavity formation along the cut direction. Characteristic parameters such as fractal damage of blasting cavity, fracture degree of element, and fracture degree of interface show a trend of first increasing and then decreasing as the length proportion of the first stage increases, and the length proportion of the first stage has an optimal value. Under the conditions of rock parameters, explosive performance and linear charge density set by the numerical simulation in this paper, when the length proportion of the first stage accounts for 0.42, the multi-stage cut blasting of vertical shaft can make better use of explosive energy and achieve the best blasting effect. |
| 分类号 | Q3 |
| 资助项目 | Fundamental Research Funds for the Central Universities[FRF-TP-20-044A1] ; China Postdoctoral Science Foundation[2020 M680354] ; National Natural Science Foundation of China[51934001] ; National Natural Science Foundation of China[51974316] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000657824800007 |
| 资助机构 | Fundamental Research Funds for the Central Universities ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China |
| 其他责任者 | Feng, Chun |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/86958]  |
| 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.State Key Lab Geomech & Deep Underground Engn, Beijing 100083, Peoples R China; 3.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Ding, Chenxi,Yang, Renshu,Zheng, Changda,et al. Numerical analysis of deep hole multi-stage cut blasting of vertical shaft using a continuum-based discrete element method[J]. ARABIAN JOURNAL OF GEOSCIENCES,2021,14(12):11. |
| APA | Ding, Chenxi,Yang, Renshu,Zheng, Changda,Yang, Liyun,He, Songlin,&冯春.(2021).Numerical analysis of deep hole multi-stage cut blasting of vertical shaft using a continuum-based discrete element method.ARABIAN JOURNAL OF GEOSCIENCES,14(12),11. |
| MLA | Ding, Chenxi,et al."Numerical analysis of deep hole multi-stage cut blasting of vertical shaft using a continuum-based discrete element method".ARABIAN JOURNAL OF GEOSCIENCES 14.12(2021):11. |
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来源：力学研究所
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