DENSITY MONITORING OF BULK EMULSION EXPLOSIVES IN CONFINED BLASTHOLES
Parameter’s control of explosives used in open pit mining operations have become more relevant over the years, bringing a better understanding of detonation performance. Giving into consideration that bulk emulsion density reflects on blasting results due to its importance in product sensitivity and...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | Brasil |
| Institución: | Instituto Federal do Rio Grande do Norte (IFRN) |
| Repositorio: | Holos |
| Idioma: | portugués inglés |
| OAI Identifier: | oai:holos.ifrn.edu.br:article/14671 |
| Acceso en línea: | http://www2.ifrn.edu.br/ojs/index.php/HOLOS/article/view/14671 |
| Access Level: | acceso abierto |
| Palabra clave: | rock blasting detonation mining |
| Sumario: | Parameter’s control of explosives used in open pit mining operations have become more relevant over the years, bringing a better understanding of detonation performance. Giving into consideration that bulk emulsion density reflects on blasting results due to its importance in product sensitivity and velocity of detonation (VOD), blast designs are conducted assuming that cup density measurements are reliable and explosives gassing agents will perform as per specifications. Nevertheless, confinement conditions in boreholes are often neglected on predictive modelling. This paper describes the assembly of a device equipped with pressure sensors and its utilization in confined boreholes, obtaining in situ monitoring of density variation in explosive columns. The results enabled a comparison between bulk emulsion density variation when acting in different environments, providing detailed insights into how chemically sensitized explosives behave into different circumstances, giving the opportunity to re-evaluate blast design. |
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