Measurement and Analysis of Blast Fragmentation

Measurement and Analysis of Blast Fragmentation

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Summary

Fragmentation characteristics influence mucking productivity, crusher throughput and energy consumption, plant efficiency, yield and recovery, or the price itself of the end product in the case of industrial minerals and aggregates. Reliable, quantitative measurements of fragment sizes are instrumental in controlling and optimizing the blasting results.

Measurement and Analysis of Blast Fragmentation presents the latest developments in rock fragmentation measurement techniques and analysis. It includes image analysis and machine vision techniques, either photographic or 3D such as stereo-photogrammetry and laser triangulation; case studies of fragmentation measurements in a variety of situations and used in different optimization and control tasks; fragmentation analysis and new suitable functional descriptions of size distributions, and model-scale fragmentation tests with weighed size distribution data.

The contributions in this book were presented at the workshop Measurement and Analysis of Blast Fragmentation, which was hosted by Fragblast 10 (New Delhi, India, November 2012), provide a snapshot of the activity in rock fragmentation measurements and analysis around the world, and are a must-have reference for engineers and researchers working in rock blasting.

Table of Contents

Preface
Organising Institution
Committees
Sponsors

Technology developments

A history of digital image analysis technique for blast fragmentation assessment and some Indian contributions
A.K. Raina

Automated rock fragmentation measurement with close range digital photogrammetry
M.J. Noy

Automated, on-line, calibration-free, particle size measurement using 3D profile data
M.J. Thurley

Surfometric imaging for dimensional analysis of individual aggregates and bulk samples
G. Dislaire, P. Illing, C. Laurent, E. Pirard, P. Di Carlo & C. Moitroux

Designing and optimising surface blasts using 3D images
M. Pötsch, A. Gaich & R.A. McClure


Fragmentation testing

Experimental blast fragmentation research in model-scale bench blasts
P. Schimek, F. Ouchterlony & P. Moser

Fragmentation under different confinement conditions and the burden behavior—small scale tests
N. Petropoulos, D. Johansson & F. Ouchterlony


Size distributions

A three parameter rock fragmentation distribution
A.T. Spathis

On the performance of truncated distributions to describe rock fragmentation
J.A. Sanchidrián, P. Segarra, L.M. López, F. Ouchterlony & P. Moser


Applications of fragmentation measurement

Assessment of objective based blast performance: Ranking system
V.R. Sastry & K.R. Chandar

Return on experience from full-scale open pit blasting experiments
F. Delille, D. Goetz & B. Tessier

Fragmentation risk assessment in open-pit blasting using interaction matrix-vulnerability index method
F. Faramarzi, H. Mansouri, M.A.E. Farsangi & M. Monjezi

Optimisation of blast design for an iron ore mine and assessment of fragmentation through image processing
H.S. Venkatesh, K. Vamshidhar, G. Gopinath, A.I. Theresraj & R. Balachander

Research on prediction of average blasting fragmentation based on BP neural network
G.Q. Zhang, T.J. Tao, X.G. Wang & C.P. Wu

Assessing the effect of rock mass properties on rock fragmentation
A.K. Sirveiya & N.R. Thote

Author index

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