Blast Effects of a Shear Thickening Fluid-Based Stemming Material
The Trauzl test is widely used to measure the explosive power of a substance by determining the volume increase produced by the detonation of a tested explosive charge in the cavity of a lead block with defined quality and size. In this study, the Trauzl lead block test and a high-speed 3D digital i...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Mining |
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| Online Access: | https://www.mdpi.com/2673-6489/2/2/18 |
| _version_ | 1797484116732542976 |
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| author | Younghun Ko Kiseok Kwak |
| author_facet | Younghun Ko Kiseok Kwak |
| author_sort | Younghun Ko |
| collection | DOAJ |
| description | The Trauzl test is widely used to measure the explosive power of a substance by determining the volume increase produced by the detonation of a tested explosive charge in the cavity of a lead block with defined quality and size. In this study, the Trauzl lead block test and a high-speed 3D digital image correlation (3D-DIC) system were used to evaluate the effect of stemming on a blast hole. The blasting experiments were conducted with emulsion explosives. The stemming materials adopted in this study were sand, aggregate, and shear thickening fluid (STF)-based stemming materials. The results of the blasting experiments and numerical analysis showed that the expansion rate of the lead block was most affected by STF-based materials, followed by aggregates and sand stemming. Furthermore, the displacement and surface strain on the block were the highest in the experimental case using STF-based stemming materials. The STF-based stemming material developed in this study in open pit mining or various blasting constructions is expected to increase rock fragment efficiency, compared to that of general blasting stemming methods, and reduce blasting vibration by decreasing the amount of explosive per blast hole used for blasting. |
| first_indexed | 2024-03-09T22:56:52Z |
| format | Article |
| id | doaj.art-2b79b1ef0fa445e1b29750bea7b661b0 |
| institution | Directory Open Access Journal |
| issn | 2673-6489 |
| language | English |
| last_indexed | 2024-03-09T22:56:52Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Mining |
| spelling | doaj.art-2b79b1ef0fa445e1b29750bea7b661b02023-11-23T18:07:59ZengMDPI AGMining2673-64892022-06-012233034910.3390/mining2020018Blast Effects of a Shear Thickening Fluid-Based Stemming MaterialYounghun Ko0Kiseok Kwak1Department of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology, 283 Goyang-daero, Ilsanseo-gu, Goyang-si 10223, KoreaDepartment of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology, 283 Goyang-daero, Ilsanseo-gu, Goyang-si 10223, KoreaThe Trauzl test is widely used to measure the explosive power of a substance by determining the volume increase produced by the detonation of a tested explosive charge in the cavity of a lead block with defined quality and size. In this study, the Trauzl lead block test and a high-speed 3D digital image correlation (3D-DIC) system were used to evaluate the effect of stemming on a blast hole. The blasting experiments were conducted with emulsion explosives. The stemming materials adopted in this study were sand, aggregate, and shear thickening fluid (STF)-based stemming materials. The results of the blasting experiments and numerical analysis showed that the expansion rate of the lead block was most affected by STF-based materials, followed by aggregates and sand stemming. Furthermore, the displacement and surface strain on the block were the highest in the experimental case using STF-based stemming materials. The STF-based stemming material developed in this study in open pit mining or various blasting constructions is expected to increase rock fragment efficiency, compared to that of general blasting stemming methods, and reduce blasting vibration by decreasing the amount of explosive per blast hole used for blasting.https://www.mdpi.com/2673-6489/2/2/18Trauzl test3D digital image correlationshear thickening fluidstemmingblasting experiment |
| spellingShingle | Younghun Ko Kiseok Kwak Blast Effects of a Shear Thickening Fluid-Based Stemming Material Mining Trauzl test 3D digital image correlation shear thickening fluid stemming blasting experiment |
| title | Blast Effects of a Shear Thickening Fluid-Based Stemming Material |
| title_full | Blast Effects of a Shear Thickening Fluid-Based Stemming Material |
| title_fullStr | Blast Effects of a Shear Thickening Fluid-Based Stemming Material |
| title_full_unstemmed | Blast Effects of a Shear Thickening Fluid-Based Stemming Material |
| title_short | Blast Effects of a Shear Thickening Fluid-Based Stemming Material |
| title_sort | blast effects of a shear thickening fluid based stemming material |
| topic | Trauzl test 3D digital image correlation shear thickening fluid stemming blasting experiment |
| url | https://www.mdpi.com/2673-6489/2/2/18 |
| work_keys_str_mv | AT younghunko blasteffectsofashearthickeningfluidbasedstemmingmaterial AT kiseokkwak blasteffectsofashearthickeningfluidbasedstemmingmaterial |