| Space-time effect of blasting stress wave and blasting gas on rock fracture based on a cavity charge structure | |
Ding, Chenxi1,2,4; Yang, Renshu1,2; Chen, Cheng1,2; Zhu XG(朱心广)3 ; Feng C(冯春)3; Xie, Quanmin4
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| Corresponding Author | Yang, Renshu([email protected]) |
| Source Publication | INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
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| 2022-12-01 | |
| Volume | 160Pages:9 |
| ISSN | 1365-1609 |
| Abstract | There are still varying opinions on the relative spatio-temporal contributions of blasting stress wave and blasting gas in the theoretical study of rock blasting due to the transient nature of the blasting process and the complexity of the blasting effect. Based on this, the study proposes a cavity charge structure entailing quantitative and differentiated research on the effects of blasting stress wave and blasting gas over time and space. The time and space action characteristics of blasting gas are regulated by changing the charge structure of the borehole and placing a cavity between the charge and borehole wall, and the "double-peak" evolution law of blasting strain is obtained. The first peak is generated by blasting stress wave, and the second peak is generated by blasting gas, with a delay between the first and second peaks. Further analysis shows that the cavity has different effects on blasting stress wave and blasting gas. Finally, the space-time effect of blasting stress wave and blasting gas can be fully utilized to achieve controllable rock fragmentation by adjusting the charge position and the cavity volume in the cavity charge structure. |
| Keyword | Blasting stress wave Blasting gas Cavity charge structure Strain evolution Crack propagation |
| DOI | 10.1016/j.ijrmms.2022.105238 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000884859300003 |
| WOS Keyword | NUMERICAL-SIMULATION ; PROPAGATION |
| WOS Research Area | Engineering ; Mining & Mineral Processing |
| WOS Subject | Engineering, Geological ; Mining & Mineral Processing |
| Funding Project | National Natural Science Foundation of China[52204085] ; National Natural Science Foundation of China[51934001] ; Interdisciplinary Research Project for Young Teachers of USTB (Fundamental Research Funds for the Central Universities)[FRF-IDRY-21-006] ; Fundamental Research Funds for the Central Universities[FRF-TP-20-044A1] ; Foundation of Hubei Key Laboratory of Blasting Engineering[BL2021-05] ; China Postdoctoral Science Foundation[2021M700386] |
| Funding Organization | National Natural Science Foundation of China ; Interdisciplinary Research Project for Young Teachers of USTB (Fundamental Research Funds for the Central Universities) ; Fundamental Research Funds for the Central Universities ; Foundation of Hubei Key Laboratory of Blasting Engineering ; China Postdoctoral Science Foundation |
| Classification | 一类 |
| Ranking | 3+ |
| Contributor | Yang, Renshu |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/90823 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China; 2.Univ Sci & Technol Beijing, Key Lab Minist Educ High Efficient Min & Safety Me, Beijing 100083, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 4.Jianghan Univ, Hubei Key Lab Blasting Engn, Wuhan 430056, Peoples R China |
| Recommended Citation GB/T 7714 | Ding, Chenxi,Yang, Renshu,Chen, Cheng,et al. Space-time effect of blasting stress wave and blasting gas on rock fracture based on a cavity charge structure[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2022,160:9.Rp_Au:Yang, Renshu |
| APA | Ding, Chenxi,Yang, Renshu,Chen, Cheng,朱心广,冯春,&Xie, Quanmin.(2022).Space-time effect of blasting stress wave and blasting gas on rock fracture based on a cavity charge structure.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,160,9. |
| MLA | Ding, Chenxi,et al."Space-time effect of blasting stress wave and blasting gas on rock fracture based on a cavity charge structure".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 160(2022):9. |
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