Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Assessment of velocity of detonation at kumtor open pit gold mine
Download
index.pdf
Date
2011
Author
Düzgün, Özkan
Metadata
Show full item record
Item Usage Stats
135
views
68
downloads
Cite This
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’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.
Subject Keywords
Mining Engineering.
,
Metallurgy.
URI
http://etd.lib.metu.edu.tr/upload/12613676/index.pdf
https://hdl.handle.net/11511/21051
Collections
Graduate School of Natural and Applied Sciences, Thesis
Suggestions
OpenMETU
Core
Assessment of explosive performance by detonation velocity measurements in Turkey
Bilgin, A; Esen, S (2000-11-09)
Real performance of an explosive can be determined by conducting continuous velocity of detonation (VOD) measurements in full scale blast environments. This paper presents and discusses the results of continuous VOD measurements of five different blasting agents carried out at three mines in Turkey. The results show that VOD of a blasting agent varies depending on mainly the rock properties (confinement), presence or absence of sensitizer (chemical formulation), blasthole diameter, and type of primer. The m...
Assessment of ideality of some commercial explosives
Bilgin, Hasan Aydın; Esen, S (1999-02-10)
This paper describes the ideality of some commercial explosives with the help of the detonation theory and detonation velocity measurement. Ideality of an explosive can be determined by comparing experimentally measured and ideal detonation velocities. A measured detonation velocity at a certain charge diameter markedly lower than the ideal value indicates incomplete reaction and thus non-ideal detonation. Since it is shown that commercial explosives exhibit non-ideal behavior, two-dimensional detonation th...
Presplit blast induced air overpressure investigation at Uşak Kısladağ gold mine
Bigikoçin, Onur; Bilgin, Hasan Aydın; Department of Mining Engineering (2007)
In presplit blasting operations airborne energy called air blast overpressure or impulsive sound is produced. The air blast induced by blasting may vary significantly at or around an open pit mine depending on several parameters such as the amount of charge detonated, the physical distance between the blast and the monitoring locations and the weather conditions. Therefore evaluation and assessment of noise condition at or around an open pit mine is necessary. The objective of this research study is to moni...
Linear prediction for single snapshot multiple target doppler estimation under possibly moving radar clutter
Öztan, Baha Baran; Tanık, Yalçın; Department of Electrical and Electronics Engineering (2008)
We have devised a processor for pulsed Doppler radars for multi-target detection in same folded range under land and moving clutter. To this end, we have investigated the estimation of parameters, i.e., frequencies, amplitudes, and phases, of complex exponentials that model target echoes under radar clutter characterized by antenna scanning modulation with observation limited to single snapshot, i.e., one burst. The Maximum Likelihood method of estimation is presented together with the bounds on estimates, ...
A Trigonometric Approach to a Limiting Law on Detonation Velocity
Türker, Burhan Lemi (2012-01-01)
Detonation velocity is an important characteristics of explosive compounds. Presently, to get some insight about the detonation velocity, a novel trigonometric model has been suggested first in 2-dimensional form and then extended to 3-dimension. In the 2D-form the detonation velocity is considered to be a function of the total energy and a newly defined "angle of detonation", Q, of an explosive molecule. The angle of detonation velocity is also shown to be a nonlinear function of the total energy. In the 3...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
Ö. Düzgün, “Assessment of velocity of detonation at kumtor open pit gold mine,” M.S. - Master of Science, Middle East Technical University, 2011.
