Effect of Type of Explosive and Blast Hole Diameter on Boulder Count in Limestone Quarry Blasting
Rock fragmentation due to blasting depends upon many parameters. The properties of the explosive are one of them. In limestone quarries, ammonium nitrate–fuel oil (ANFO) or site mixed emulsion (SME) are generally used for rock fragmentation. Both these explosives cause substantial changes in the bre...
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| Veröffentlicht in: | Geotechnical and geological engineering 2020-08, Vol.38 (4), p.4091-4097 |
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| creator | Dhekne, P. Y. Balakrishnan, Vineeth Jade, R. K. |
| description | Rock fragmentation due to blasting depends upon many parameters. The properties of the explosive are one of them. In limestone quarries, ammonium nitrate–fuel oil (ANFO) or site mixed emulsion (SME) are generally used for rock fragmentation. Both these explosives cause substantial changes in the breakage mechanism of rockmass thereby affecting the fragmentation. This paper reports the effect of type of the explosive and blast hole diameter on the boulder count in limestone quarry blasting. In all, 264 blasts using ANFO or SME explosives have been conducted in nearby limestone quarries. The blasts have been conducted for 152 mm diameter and 115/100 mm blast holes. The analysis of the results indicates that the SME explosives are more suitable explosive in limestone quarries than ANFO for reducing the boulder count. SME has caused a reduction in generation of boulders for both 152 and 100 mm diameter blast holes when compared to ANFO. Moreover, the blasts with larger diameter blast holes charged with SME have resulted in less boulders than smaller diameter blast holes charged with the same explosive. |
| doi_str_mv | 10.1007/s10706-020-01280-y |
| format | Article |
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SME has caused a reduction in generation of boulders for both 152 and 100 mm diameter blast holes when compared to ANFO. 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This paper reports the effect of type of the explosive and blast hole diameter on the boulder count in limestone quarry blasting. In all, 264 blasts using ANFO or SME explosives have been conducted in nearby limestone quarries. The blasts have been conducted for 152 mm diameter and 115/100 mm blast holes. The analysis of the results indicates that the SME explosives are more suitable explosive in limestone quarries than ANFO for reducing the boulder count. SME has caused a reduction in generation of boulders for both 152 and 100 mm diameter blast holes when compared to ANFO. Moreover, the blasts with larger diameter blast holes charged with SME have resulted in less boulders than smaller diameter blast holes charged with the same explosive.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><doi>10.1007/s10706-020-01280-y</doi><tpages>7</tpages></addata></record> |
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| subjects | Ammonium Ammonium compounds Ammonium nitrate Blast holes Blasting Blasting (explosive) Boulders Civil Engineering Earth and Environmental Science Earth Sciences Emulsions Explosions Explosives Fragmentation Fuel oils Geotechnical Engineering & Applied Earth Sciences Hydrogeology Limestone Original Paper Quarries Rocks Terrestrial Pollution Waste Management/Waste Technology |
| title | Effect of Type of Explosive and Blast Hole Diameter on Boulder Count in Limestone Quarry Blasting |
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