One of the most important properties of an explosive is its velocity of detonation
(VOD). It is essential that the explosive should detonate at its optimum rate and
release sufficient detonation pressure to get good fragmentation under the existing
field conditions.
The main objectives of this research study are to investigate the effects of explosive
type, blast hole diameter, and degree of confinement on the VOD of bulk ANFO
and bulk emulsion in Kumtor Open Pit Gold Mine. In this study, the continuous
resistance wire method is employed to measure in-situ VOD of both bulk ANFO
and bulk emulsion. The VOD values are measured for different hole diameters and
under different confinements for both explosives. The ideality of bulk ANFO and
bulk emulsion is calculated by comparing the in-situ measured VOD&rsquo / s and their
ideal detonation values. It is found that the VOD of both explosives increases as the
blast hole diameter and the degree of confinement increases. In addition to this,
VOD of bulk ANFO decreases when it gets wet in the blast hole. Another finding is
that, proportion of bulk emulsion ingredients has influence on its VOD. This research study provides a good understanding to use suitable explosive in existing
rock conditions in Kumtor Open Pit Gold Mine.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12613676/index.pdf |
| Date | 01 September 2011 |
| Creators | Duzgun, Ozkan |
| Contributors | Bilgin, Hasan Aydin |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for METU campus |
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