Rock Fragmentation by Blasting : Proceedings of the 9th Int. Symp. on Rock Fragmentation by Blasting - Fragblast 9, Sept. 2009, Granada Spain book cover
1st Edition

Rock Fragmentation by Blasting
Proceedings of the 9th Int. Symp. on Rock Fragmentation by Blasting - Fragblast 9, Sept. 2009, Granada Spain

ISBN 9780415482967
Published August 18, 2009 by CRC Press
872 Pages

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Book Description

This volume contains the papers presented at the 9th International Symposium on Rock Fragmentation by Blasting, held in Granada, Spain, 13-17 August 2009. A state-of-the-art collection of articles on developments in rock blasting and explosives engineering, with contributions on rock characterization, explosives and initiation systems, blast design and monitoring, fragmentation assessment, numerical modeling, vibrations from blasting, environmental and economical aspects of rock blasting, and more. Containing unique knowledge, case studies, ideas and insights, this volume is must-have literature for researchers and practitioners in the field of explosives and blasting.

Table of Contents

Keynote addresses

  • Fragmentation characterization; the Swebrec function and its use in blast engineering
  • Intra-hole and inter-hole effects in typical blast designs and their implications on explosives energy release and detonator delay time—A critical review

1. Rock characterization

  • Mechanical characterization of rocks at high strain rate by the JRC modified Hopkinson bar: A tool in blast and impact assessment
  • Rate dependence of tensile/flexural strengths of Laurentian granite
  • Determination of dynamic fracture parameters of rocks using a semi-circular bend technique
  • Dynamic caustics experiment of blast-induced crack propagation in material containing plane of weakness
  • 3-Dimensional visualization of granitic rocks subjected to impact loading using Micro-focus X-ray CT scanner
  • An application of fuzzy sets to the blastability assessment of rock mass
  • Hydrothermal alteration impact on drilling and blasting management, planning and fragmentation results
  • How 3D images support bench face profiling, blast planning and rock mass characterisation
  • Referenced 3D images from inside cavities and behind rings in sublevel caving

2. Explosives and initiation systems

  • Study of the effect of particle size distribution on the detonation velocity of modified ANFO
  • Application of heavy ANFO explosives in quarries nearby Istanbul
  • Development of low density reactive agents
  • Evaluation of salt-ANFO mixtures in back break reduction by data envelopment analysis
  • Properties of alternatively fueled ammonium nitrate explosives
  • Use of furnace oil as liquid fuel in site mixed slurry explosive system – A case study
  • A long-hole open stope blast in hot ground
  • A new principal formula for the determination of explosive strength in combination with the rock mass strength
  • Study and application of an elliptical bipolar linear shaped charge
  • Limitations of electronic delays for the control of blast vibration and fragmentation
  • Pre-programmed electronic detonators for underground blasting
  • The key technique of highly precise and safe delay detonator without primary explosive

3. Blast design, monitoring and fragmentation assessment

  • A common form for fragment size distributions from blasting and a derivation of a generalized Kuznetsov’s x50-equation
  • Formulae and techniques for assessing features of blast-induced fragmentation distributions
  • Evaluating a calibration method for the estimation of fragmented rock 3D-size-distribution out of 2D images
  • Fragmentation size measurement using 3D surface imaging
  • Evaluation of some distribution functions for describing rock fragmentation data
  • Influence of rock mass blastability on explosive energy distribution
  • A practical method of bench blasting design for desired fragmentation based on digital image processing technique and Kuz-Ram model
  • Kuznetsov model’s efficiency in estimation of mean fragment size at the Sungun copper mine
  • Determination of the practicable burden in Sungun open-pit mine, Iran
  • Control of rock fragmentation and muck pile geometry during production blasts (environmentally friendly blasting technique)
  • The application of electronic monitors to understand blast movement dynamics and improve blast designs
  • New methodology for the quality control of long-hole drilling in underground hard rock mines
  • Causes, implications and control of oversize during blasting
  • Tunnel blast pattern design using short holes

4. Modelling of rock blasting

  • Simulation of real detonations as an energy source term for the Hybrid Stress Blasting Model
  • Developments in numerical modeling of blast induced rock fragmentation: Updates from the HSBM project
  • Towards a complete validation of the lattice scheme in the Hybrid Stress Blasting Model (HSBM)
  • Modelling the impact of sublevel caving blast design and performance on material recovery
  • A numerical investigation of the effect of blasthole delay in rock fragmentation
  • Use of a modified particle-based method in simulating blast-induced rock fracture
  • A new 3D simulation framework to model blast induced rock mass displacement using physics engines
  • Large scale concrete cube blasts for the HSBM model
  • Analysis of single particle fragmentation curves after drop weight impact of blast induced fragments
  • Waves, fractures and boundary effects associated with blast experiments conducted in cylindrical and block type specimens
  • Seismic radiation patterns from cylindrical explosive charges by analytical and combined finite-discrete element methods
  • Borehole excitation by oscillating/moving pressure band
  • New blasting simulation

5. Rock damage and wall control

  • The size of the damage zone in relation to the linear charge concentration
  • The extent of blast damage from a fully coupled explosive charge
  • Crack lengths or blast damage from string emulsion and electronic detonators
  • Controlled blasting (pre-splitting) at an open-pit mine in India
  • Carving-like blasting technique and its application in rock anchor beam excavation
  • Evaluation of Kiruna mine drifting data using the NIOSH design approach
  • A study on the estimation of the Tunnel Contour Quality Index in a drill and blast tunnel
  • Blasting in a large scale opening gallery—case study: Feter 6 gallery, Faryab chromate mine
  • Effect of joint orientations on rock mass damage at a penstock tunnel subjected to repeated blast vibrations—a case study
  • New perspectives for blast damage evaluation in crystalline solid materials

6. Vibrations

  • The impact of geological features on level of ground vibrations
  • Determination of ‘safe’ infrastructure vibration levels using alternative approaches
  • Assessment of the error of blast vibration measurements
  • Seismic wave monitoring and ground vibration analysis for bench blasting in Sungun open pit copper mine
  • Impact assessment of surface mine blasting on adjacent underground mine structures using field measurements and numerical techniques
  • Comparison of traditional near-field vibration prediction models with three-dimensional vibration scaling and blast wave energy
  • Influence of rock mass discontinuity networks on the seismic response parameters
  • An integrated approach of signature hole vibration monitoring and modeling for quarry vibration control
  • Vibration induced by drilling and blasting excavation process in high in-situ stress area
  • Monitoring of blast-induced vibration effects on structures by fiber Bragg grating
  • 3D hydrocode analyses of a mechanically stabilized earth retaining wall subjected to production blast vibrations at a surface coal mine
  • Blast vibration study to analyse the response of a wind tower close to an open pit mine

7 Environmental

  • Mechanistic Monte Carlo models for analysis of flyrock risk
  • Flyrock prediction by multiple regression analysis in Esfordi phosphate mine of Iran
  • Evaluation of meteorological effects on airblast levels
  • Characterising dust generation from blasting
  • Greenhouse gas implications of explosives and blasting
  • Blast emission criteria and detection methods for the safeguarding of marine mammals in a blast environment

8 Blasting economics and downstream effects

  • Optimization of blasting in narrow reef mines in South Africa
  • Productivity improvement in an opencast coal mine in India using digital image analysis technique
  • Throw blasting analysis—a focus on coal uncovery and recovery rates
  • The application of a blast audit for production improvement
  • Estimate of support and reinforcement cost increase associated to poor blasting practices in drifting

9 Case studies

  • Maximizing the throw while controlling vibration within safe limits in cast blasting
  • Six Sigma® methodology applied to blasting
  • A practical approach to fragmentation optimization at Kidd Mine
  • Infrastructure design effects on the Pipa Norte Mine, division El Teniente
  • Successful application of bamboo spacers in smooth wall blasting for highway construction in hilly terrain—a case study
  • Controlled blasting for protection of water production wells at Cerro Corona
  • Hard rock dimension stone quarrying using control blasting—Case study: Shahkooh granite quarry
  • A research on the propagation law of the shock wave in underwater blasting and the bubble curtain protection
  • New progress and development of engineering blasting in China
  • Advances in precision blasting in China

10 Special blasting applications

  • Explosive synthesis for lithium battery materials
  • Effect of explosion waves on stacked wood chips in a closed vessel
  • FEM simulation of a reinforced concrete chimney blasting demolition with separate model
  • Demolition of arch portion of brick and mortar constructed railway bridge
  • Measurement of the vibration from the blasting demolition of a tall chimney

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