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Crack Displacement and Vibration Measurement of an Underground Portal
By Douglas Rudenko PG, Jay Elkin, Siavash Mahvelati Ph. D.
Very little studies have investigated the behavior of cracks in unlined tunnels over long periods of time, especially when such flaws are subjected to blast-induced vibrations. Using a pool of 30+ bla
Feb 1, 2020
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Case Studies Using the Multiple Blasthole Fragmentation (MBF) Model at Open Pit Mines in Canada
By Scott King, Norm Patterson, Ruilin Yang
The multiple blasthole fragmentation (MBF) model developed by Orica models the contributions from multiple blastholes to fragmentation at any given point in the rock and simulates a production blast w
Jan 1, 2018
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Influence of Environment on Explosively Driven Shock Waves in Air
By Joshua Hoffman, William Chad Wedding, Braden Lusk
The University of Kentucky employs an explosively driven shock tube in the course of experimentation. A good deal of the work completed relates to the verification of blast mitigation products and str
Jan 1, 2011
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Recent Projects - Emergency Bridge Blasting
By Brent Blanchard
As most veterans of our industry are aware, explosive demolition by its very nature is often a challenging proposition. Even under the best of circumstances, proper planning and care must be taken dur
Jan 1, 2003
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Study of Ultrafines Control in Blasting
By A. Andrades, E. Arias, Y. Pizarro, J. Alarcón
Division Ministro Hales - Codelco (DMH) is located at 2600 meters above sea level, 10 km north of the city of Calama, Antofagasta region, Chile. In operation since 2010, it corresponds to a porphyry
Jan 1, 2024
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Application of the Selective Loading to the Rock Mass Characterized through Drill Monitoring for Autonomous and Manual Drilling Mode to Optimize Blasting Results in Open Pit Operations
By Jorge Blázquez, Pablo Ravanal, Paulo Couceiro, Juan Navarro
Blasting performance is influenced by rock mass properties and blast design parameters. From them, the rock is the only variable that cannot be modified, but it can be measured, so that, blast design
Feb 6, 2023
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Study of Linear Waves on Linear Shaped Charges
By G. Walsh, M. T. Wild
In this paper the performance effects of linear shaped charges will be discussed. Different sized charges were tested and reviewed based on their performance used with a typical detonation method vs.
Jan 1, 2011
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New controlled drilling and blasting methodology to preserve the central shaft in a copper mining unit in central Perú.
By Samir Garcia, Alain Mestanza
This technical work was carried out in an open pit copper mining unit, located in central Peru, which has a daily production of 440 thousand tons per day. Currently the pit consists of three mining ph
Jan 21, 2025
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Ore guiding in underground mining using MWD and machine learning
By J. Sanchidrián, A. Fernández, P. Segarra
The combination of chemical analysis techniques as XRF and measurement-while-drilling (MWD) technology in underground mining is a novel approach to gather comprehensive on-line information about physi
Jan 1, 2024
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Determination of Presplit Borehole Pressure
By Dr. Paul Worsey, Dr. Calvin Konya, Dr. Anthony Konya
Development of methods to calculate presplit blasthole pressures through simplified models, namely the Empirical Model and the Detonation Pressure Model. These models can be used with variations in ex
Feb 1, 2020
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Advance Blasting using Drone Mapping and AI for Comprehensive Blast Performance Analysis
By Dr. Anurag Agrawal, Fathur Rozaq, Nella Lubis, Relinda Sanistya, Herry Saputra, Rudolf Sitorus
In mining operations, basic drone applications such as pre- and post-blast photo comparisons, blast video recordings, and sample-based fragmentation analysis are often used to assess blast performance
Jan 21, 2025
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Drilling and Blasting in Hot and Reactive Ground Conditions at Barrick Goldstrike's Meikle Mine
By D. Scott Scovira, Remi Proulx
The Meikle Mine is a high grade, underground gold mine utilizing primary-secondary longhole open stoping with delayed backfill to produce 3000 stpd of ore. Hot and reactive ground conditions were enco
Jan 1, 2000
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A High=Preformance Vibration Monitoring and Data Distribution System for Large-Scale Urban Development Projects
By Robert Lee, Pertti Paavola
Automated vibration monitoring and web-based data distribution has proven itself on the largest single construction project ever undertaken in Finland. The excavation for the Kamppi Center Project in
Jan 1, 2004
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Blasting a Diversion Tunnel through the Abutment of a "Meta-Stable" Dam
By Jennifer Williams, Donald J. Berger
Originally built between 1913 and 1916, the Ashton Dam & Hydroelectric Facility has experienced various seepage and piping incidents since completion. Ashton Dam is located within 15 miles (24 km) of
Jan 1, 2014
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Blasting Improvements by Using Most Active Rock Variations on Blast
By Alain Blanchier, Anne Charline Sauvage
Rock mass variations have a huge influence on explosives efficiency and on blasting results. Numerous blasting improvements could be gained by taking into account rock mass and its variations. However
Jan 1, 2004
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Review and Learnings from a Surface Quarry Rockfall Incident
By Andrew Moore
It has long been common practice to conduct drilling and blasting operations at surface quarries in the Midwest in close proximity to near-vertical highwalls. The main reasons for such an approach, an
Feb 6, 2023
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Advanced Blasting Optimization for Enhanced Productivity: The X-2Mill Solution
By Jorge Blázquez, Paulo Couceiro, Patricio Vergara, Luis Martínez, Juan Navarro
This study introduces the X-2Mill solution, a refined two-step methodology aimed at optimizing blast designs by aligning explosive energy with rock properties. The approach employs the X-4Traits Model
Jan 21, 2025
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Simulations of Full-scale Bench Blasts using FDM (Fracture Density Model)
By Dale S. Preece
A new three dimensional (3D) mechanistic model of fragmentation, called the Fracture Density Model (FDM) is used to simulate full-scale bench blasts at the Bararp dimensional stone quarry in Sweden. T
Feb 1, 2020
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A full-field solution to predict vibrations in the presence of a free surface
By J. A. Sanchidrián, P. Segarra, S. Gómez
Blasting is a common activity in mining that can cause significant damage in the remaining rock mass. The most commonly used method for predicting vibrations is the Swedish or Holmberg-Persson approac
Jan 1, 2024
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Productive Partnership – Advanced Blasting Technology at Newlands Coal Mine
By Les Willan, Chris Batten, Matt Sparkes
In late 2008 Xstrata Newlands Coal Mine in Central Queensland and Orica Mining Services engaged in discussion to investigate methodologies to change their current mining practices and overcome the iss
Jan 1, 2010