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Blast Vibration Analysis by a Time Series Technique
By Francis O. Otuonye
An application of a time series and systems analysis modeling technique to blast vibration data is discussed. The vibration data was taken from a rock support structure and the surrounding rock mass a
Jan 1, 1994
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Subdrill – The Underutilised Blasting Parameter
By Stephen Mansfield
In metalliferous mining operations, subdrill is that portion of the blast hole that is drilled below the target grade elevation, and in most cases loaded with explosives. Its primary aim is to enable
Feb 1, 2020
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Are You As Efficient As You Can Be? - An Underground Paper-
By Roger L. Keller
This paper examines the aspects of differing types of blasting cuts in underground headings with consideration to the reduction of number of holes and costs. At least one comparison study is related w
Jan 1, 1989
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Contour Blasting in Tunneling: the Role of Drilling Precision
By Mauro Fornaro, Marilena Cardu, Renato Mancini, Daniele Castano
Tunneling by explosive blasting in civil works isn't merely intended to break somehow a way through the rock, rather to drive a permanent, constant cross section, lined way. The current mechanical exc
Jan 1, 1992
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Low Cost Method for monitoring Shock-Tube Detonator and Explosive Product performance in Blast holes.
By W. Birch, G. D. Rangel-Sharp, L. Bermingham
For many years, the accepted method of Measuring the Velocity of Detonation (VOD) in blast holes has been to use an electric cable of a constant resistance per metre. Thus as the wire is consumed by t
Jan 1, 2011
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JKVBOC Blast Movement Model Applications for Ore Control at Open Pit Mines
By Constanza Bujes, Mark Jones, Graham Crook, Yansan Jamyanbaatar, Sedat Esen
Tracking ore characteristics such as grade and hardness from its original position into the material handling and processing stages remains one of the key challenges in open pit mining of hard rock de
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Benefits of Hercduct in Construction Blasting
By Thomas C. Jones
The purpose of this paper is to disseminate new information for nonelectric blasting in trenching and construction work. The presentation is not designed or intended to discredit conventional electric
Jan 1, 1984
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Journal: 20th Annual Photo and Art Contest - Honorable Mention "Snoqualmie Pass"
By Corry Goumans
Photos 1 - 4 – Chris Elliott is a rock slope supervisor on a construction project east of Seattle, Washington. His job is to look after a “two man” scaling crew working on the rock bluffs some 300 fee
Jan 1, 2014
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Perimeter Control with Tracer Blasting
Blasting is a very cost effective method of rock fragmentation but its uncontrolled application often results in excessive damage to the perimeter of an excavation. Several perimeter control technique
Jan 1, 1997
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Signal Filtering for Safe, Efficient Explosive Use Near Engineered Structures
By Pierre Allard, Wilfrid Comeau
Near-field and close-in blasting can be safe and efficient, near engineered structures, if the dynamic reaction of structural members to blasting vibrations are considered. Safe particle velocity crit
Jan 1, 1991
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Seismic Modelling Control Of Blasts In A Nuclear Power Plant
By Alain Blanchier, Pascal Bernasconi
Blasting operations took place on Channel coast NW of France to extend Flamanville Nuclear Power Plant (EPR new generation). The closest operating reactor building was monitored by a 24 remote vibrati
Jan 1, 2008
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Blasting a Very Big Boulder Under Adverse Conditions
By Brad Johnson
Homestake Mining Corporations' open cut operation at Lead SD. experienced a highwall failure in October of 1993. The failure released a 75' section of rock wall at the 5280' level. It came to rest on
Jan 1, 1995
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Wavelet Transform Analysis of Blast Seismograph
By Douglas A. Anderson
Much progress has been made in understanding the forward process for blast vibration simulation: that is, how to create a resultant seismogram from an empirically determined seed waveform. What has no
Jan 1, 2013
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Vibration Effects of Coal Pit Blasts on Tower Pithead Concrete Structures
By Mark Svinkin
To save time for construction of coal pits, the contractor decided to combine erection of the tower pitheads with digging of skip shafts to the depth necessary for placing proper coal pit equipment. I
Jan 1, 2004
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Creating Micro Fractures in Rock Fragments for Blasting Efficiency Improvement
By S. Green, R. Yang
Blasting is a commonly used method for rock fragmentation in mining operations for mineral extraction. It involves breaking the rock mass into small pieces, and ideally creating micro fractures within
Jan 1, 2024
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Training of Shotfirers in Queensland, Australia
By A. Pope
I have attended two Explosives Engineers’ Conferences in the past 4 years. The first was in Brighton, England with the European Federation of Explosives Engineers in 2005 and the International Society
Jan 1, 2009
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Recent Projects: New Technique for Silo Removal
By Bert Bahnson
As farms decrease and subdivisions increase there is a continuing demand for easy and safe silo removal. A few years ago I attended one of the Omni istribution explosive classes and was impressed by
Jan 1, 2006
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Instrumentation of a Structure for comparison of regulations worldwide - Vibration Monitoring Standards Connected to the use of Explosives in Different Countries, Part II
By Thierry Bernhard, Johan Finsteen, Charles Dowding, Mathias Jern
To bring some clarity to how different standards relate to each other a project was initiated within the European Federation of Explosives Engineers (EFEE). The first part of the project was a literat
Feb 1, 2020
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Explosive Operations for Constructing a Tunnel Based PCB Collection System
By Gerard McAlinden, Daniel Frost, Patrick McAlinden, James McAlinden
In an effort to recover Polychlorinated biphenyls (PCB’s) that had leached into bedrock below the Hudson River in Upstate New York, a shaft and tunnel complex was designed that would allow installatio
Jan 1, 2010
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Damage Development in Small Blocks
By C. Pelley, S. Kelebek, G. Kunzel, P. Katsabanis
Small blocks of granodiorite have been subjected to blast loads from a single borehole and from a series of boreholes detonating at various timing intervals. The damage of the blocks was assessed thro
Jan 1, 2003