Analysis and numerical simulation on parameter optimization of low hardness coal pre-splitting blasting
In view of the characteristics of low coal hardness and permeability of a certain area, in order to confirm suitable cartridge radius and non-coupling charging coefficient, and improve coal blasting efficiency in the area, software of ANSYS/LS_DYNA was used for simulation analysis of blast cracking,...
| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Industry and Mine Automation
2017-12-01
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| Series: | Gong-kuang zidonghua |
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| Online Access: | http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2017.12.007 |
| _version_ | 1827988492702973952 |
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| author | GAO Fan YU Lei TAN Lihai |
| author_facet | GAO Fan YU Lei TAN Lihai |
| author_sort | GAO Fan |
| collection | DOAJ |
| description | In view of the characteristics of low coal hardness and permeability of a certain area, in order to confirm suitable cartridge radius and non-coupling charging coefficient, and improve coal blasting efficiency in the area, software of ANSYS/LS_DYNA was used for simulation analysis of blast cracking, and radius of compression zone and the maximum crack length under different cartridge radius and non-coupling charging coefficient were obtained. The analysis results show that the most suitable cartridge radius is 30 mm, and the non-coupling charging coefficient is 1.5 when the coal is on the pre-splitting blasting anti-reflection; in a certain range, blast cracking effect of high hardness coal is better than low hardness coal, the main performance is that for the high hardness coal, coal crushing area radius is relatively small and cracks number is more than low hardness coal, while the crack length is also large. |
| first_indexed | 2024-04-10T00:03:20Z |
| format | Article |
| id | doaj.art-680c460146084238b572000d54b90014 |
| institution | Directory Open Access Journal |
| issn | 1671-251X |
| language | zho |
| last_indexed | 2024-04-10T00:03:20Z |
| publishDate | 2017-12-01 |
| publisher | Editorial Department of Industry and Mine Automation |
| record_format | Article |
| series | Gong-kuang zidonghua |
| spelling | doaj.art-680c460146084238b572000d54b900142023-03-17T01:41:20ZzhoEditorial Department of Industry and Mine AutomationGong-kuang zidonghua1671-251X2017-12-014312323610.13272/j.issn.1671-251x.2017.12.007Analysis and numerical simulation on parameter optimization of low hardness coal pre-splitting blastingGAO Fan0YU Lei1TAN Lihai2Xinbaima Mining Co., Ltd., Pangang Group, Panzhihua 617209,ChinaCCCC Second Harbour Engineering Company, Wuhan 430040, ChinaSchool of Resources and Safety Engineering, Central South UniversiIn view of the characteristics of low coal hardness and permeability of a certain area, in order to confirm suitable cartridge radius and non-coupling charging coefficient, and improve coal blasting efficiency in the area, software of ANSYS/LS_DYNA was used for simulation analysis of blast cracking, and radius of compression zone and the maximum crack length under different cartridge radius and non-coupling charging coefficient were obtained. The analysis results show that the most suitable cartridge radius is 30 mm, and the non-coupling charging coefficient is 1.5 when the coal is on the pre-splitting blasting anti-reflection; in a certain range, blast cracking effect of high hardness coal is better than low hardness coal, the main performance is that for the high hardness coal, coal crushing area radius is relatively small and cracks number is more than low hardness coal, while the crack length is also large.http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2017.12.007low hardness coalpre-splitting blastingcartridge radiusnon-coupling charging coefficientblasting efficiencyblasting fracture analysis |
| spellingShingle | GAO Fan YU Lei TAN Lihai Analysis and numerical simulation on parameter optimization of low hardness coal pre-splitting blasting Gong-kuang zidonghua low hardness coal pre-splitting blasting cartridge radius non-coupling charging coefficient blasting efficiency blasting fracture analysis |
| title | Analysis and numerical simulation on parameter optimization of low hardness coal pre-splitting blasting |
| title_full | Analysis and numerical simulation on parameter optimization of low hardness coal pre-splitting blasting |
| title_fullStr | Analysis and numerical simulation on parameter optimization of low hardness coal pre-splitting blasting |
| title_full_unstemmed | Analysis and numerical simulation on parameter optimization of low hardness coal pre-splitting blasting |
| title_short | Analysis and numerical simulation on parameter optimization of low hardness coal pre-splitting blasting |
| title_sort | analysis and numerical simulation on parameter optimization of low hardness coal pre splitting blasting |
| topic | low hardness coal pre-splitting blasting cartridge radius non-coupling charging coefficient blasting efficiency blasting fracture analysis |
| url | http://www.gkzdh.cn/article/doi/10.13272/j.issn.1671-251x.2017.12.007 |
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