Rock fragmentation by blasting : Fragblast 10 : proceedings of the 10th International Symposium on Rock Fragmentation by Blasting, New Delhi, India, 26-29 November 2012

872 Pages·2013·101.84 MB·xix, 850 p. :) ill\872

by  Pradeep K Singh, Amalendu Sinha

Pradeep K. Singh F
Amalendu Sinha
Editors r
a
Rock Fragmentation by Blasting contains the papers presented at the 10th
International Symposium on Rock Fragmentation by Blasting (New Delhi, India,
26-29 November 2012), and represents the most advanced forum on blasting
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science and technology. The contributions cover all major recent advancements in
blasting and fragmentation, from realistic treatment of the target rock; modelling,
measurement and prediction of blast results; control of blast-induced damage,
to special blast designs applicable to civil construction and demolition projects. b
The latest developments on environmental issues associated with blasting
operations such as vibrations, flyrock, and dust are also included.
l
Rock Fragmentation by Blasting provides the state-of-the-art in explosives
a
and blasting engineering, and will be a valuable source of information for
researchers and practitioners involved in these areas.
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t

1
0
Pradeep K. Singh
Amalendu Sinha
Editors
Fragblast symposium DEF SPINE.indd 1 05-10-2012 15:03:39
ROCK FRAGMENTATION BY BLASTING
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PROCEEDINGS OF THE 10TH INTERNATIONAL SYMPOSIUM ON ROCK FRAGMENTATION BY
BLASTING, NEW DELHI, INDIA, 26–29 NOVEMBER 2012
Rock Fragmentation by Blasting
Fragblast 10
Editors
Pradeep K. Singh & Amalendu Sinha
CSIR – Central Institute of Mining & Fuel Research, Dhanbad, India
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Rock Fragmentation by Blasting – Singh & Sinha (Eds)
© 2013 Taylor & Francis Group, London, ISBN 978-0-415-62143-4
Table of contents
Foreword xi
Organising Institution xiii
Committees xv
Sponsors xvii
Section 1 - Keynotes
Lessons from single-hole blasting in mortar, concrete and rocks 3
F. Ouchterlony & P. Moser
Frontiers and challenges in numerical simulation of the blasting process using the combined
finite discrete element method 15
A. Munjiza, V. Divic & B. Mohanty
Innovations in blast measurement: Reinventing the past 23
A.T. Spathis
Status of characterization of strength and fracture properties of rocks under
dynamic loading 41
K. Xia
Section 2 - Rock Mass Characterisation and Fragmentation
Crack formation in rocks due to action of cemented carbide bits 55
C. Nariseti, B. Mohanty & M. Keskiniva
On the branching-merging mechanism during dynamic crack growth as a major source
of fines in rock blasting 65
F. Ouchterlony & P. Moser
Applied method integrating rock mass in blast design 77
A.C. Sauvage
Limits blast design: Controlling vibration, gas pressure & fragmentation 85
C.K. McKenzie
Blast optimisation through computer modelling of fragmentation, heave and damage 95
P.C. Dare-Bryan, S. Mansfield & J. Schoeman
Use radar reflectivity as possibility for measurements of fragmentation during the blasting 105
C. Drebenstedt & J. Ortuta
Influence of initiation point position on fragmentation by blasting in iron ore 111
Y. Long, M.S. Zhong, Q.M. Xie, X.H. Li, K.J. Song & K. Liao
Fragmentation in production rounds and mill through-put in the Aitik copper mine, a summary
of development projects 2002–2009 117
F. Ouchterlony, P. Bergman & U. Nyberg
Drilling and blasting technics by underground magnesite mining at Slovakia 129
V. Bauer
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A new tool for homogenization of jointed rock masses using wave propagation analysis 137
H. Gasmi, S. Yahyaoui & E. Hamdi
SPH procedures for failure analysis of circular rock disk under distributed arc loading 145
D. Deb & R. Pramanik
Section 3 - Blast Design
Quantification of the effect of inaccurate drilling on the risk of poor fragmentation
and increased blast hazard 153
E. Sellers, M. Kotze & M. Mthalane
Ultra-high intensity blasting for improved ore comminution 163
G.F. Brent, M.D. Rothery, P.C. Dare-Bryan, S.J. Hawke, R. Gomez & I. Humeres
Development of engineering blasting techniques in China 171
X.G. Wang
Investigation of blast design parameters to optimize fragmentation 181
S.P. Singh & H. Abdul
Causes of toe formation at dragline bench and its remedial measures 187
P.K. Singh, M.P. Roy, A. Sinha, B. Singh & V.K. Singh
Rockbursts provoked by destress blasting in hard coal longwall mining 193
P. Konicek, K. Soucek, L. Stas & A. Przeczek
Burden and spacing influence in ground vibration attenuation at coal overburden blast 203
V.L. Rosenhaim, J.F. Feijó, E. Munaretti & J.F. Koppe
The effects of delay time sequence and charge per delay on ground vibration: A case study 207
U. Ozer, A. Karadogan, U. Kalayci, Z. Guclucan & M. Akgul
Numerical simulation for the influence of delay time on the rock fragmentation 213
C. Yi, D. Johansson, U. Nyberg & J. Sjöberg
Effect of production blasts on waste dump stability 221
P.K. Singh, M.P. Roy, R.K. Paswan, V.K. Singh, A. Sinha, V.K. Singh, P.K. Sinha & C.P. Singh
Blast optimization at Sindesar Khurd underground mine to improve productivity with
reduced level of vibration 231
A.K. Lal, M. Daripa, A. Kumar, V. Chittora, M.P. Roy & P.K. Singh
ECOFRO, an eco comparison tool for methods of rock fragmentation 241
J.-F. Couvrat, J.-R. Dernoncourt & F. Martareche
Controlling vibrations caused by underground blasts in LKAB Malmberget mine 249
Z.X. Zhang
Section 4 - Blast Modelling
Application of stochastic approach to predict blast movement 257
W.D. Rogers & S.S. Kanchibotla
Modelling the extent of damage from fully coupled explosive charges 267
I. Onederra, J.K. Furtney & E. Sellers
Simple models for the complex process of rock blasting 275
J.K. Furtney, E. Sellers & I. Onederra
Computer modelling of cast blasting to calculate the variability of swell in a muckpile 283
P.C. Dare-Bryan, B. Pugnale & R. Brown
A study of the effect of rock bridges on blast-induced wave propagation in jointed media 295
A. Mortazavi & M. Sharafisafa
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Piston models for airblast due to the bulk movement of ground 301
D.P. Blair
Modification of the RHT model for enhanced tensile response predictions of geologic materials 309
A.S. Tawadrous, D.S. Preece & J.P. Glenville
A statistical model of fragmentation 325
J. Zimmerling & R. Alkins
Definition of quality of materials fragmented by blast with use of the computer program 335
N.N. Kazakov & A.V. Shlyapin
Section 5 - Blast Monitoring & Instrumentation
A method to determine 3-D dynamic strain tensor based on displacement gradients
from blast vibration and field test results 341
R. Yang & K. Ray
Measurement errors in vibrations from blasting 349
P. Segarra, J.A. Sanchidrián, L.M. López & A. Llamas
The dynamics and fragmentation of blasted ore slices in scaled sublevel caving
and slab models followed by accuracy analysis of the “Volume weight method”
used for determination of ore content at loading 357
A. Rustan
Burden movement in confined drift wall blasting tests studied at the LKAB Kiruna SLC mine 373
M. Wimmer, A. Nordqvist, F. Ouchterlony, U. Nyberg & J.K. Furtney
Investigation of the relationship between blasting pile density and loader productivity 385
A. Tosun, G. Konak, D. Karakus, A.H. Onur & T. Toprak
Advanced understanding of the mechanism of air-deck blasting: A numerical approach 391
M.A. Abdalla, P. Hagan & D. Chalmers
A design of remote real-time calibration and vibration measurement platform based on the grid 397
Y. Gao, X. Wang, G. Yang & G. Qu
Improving blasting operations using data management and analysis 403
C.P. Parihar & S. Bhandari
The monitoring and analysis of vibrations generated by blasting in Fangmayu Iron Mine 411
T.J. Tao, G.Q. Zhang & X.G. Wang
Section 6 - Blast Vibrations
The development of a trivariate statistical blast vibration model that seeks to respect
both the difference between types of seismic waves and their attenuation rates 417
W.J. Birch & T.J. White
Phase—the forgotten problem of blast vibration prediction 425
W.J. Birch, L. Bermingham, S. Hosein, T.J. White & R. Farnfield
A comprehensive assessment of ground vibrations and structural damage caused by blasting 433
P. Pal Roy
Measurement and analysis of vibration interrelated collapse process in directional
blasting demolition of a high-rise frame-shear structure building 443
X.Q. Xie, Y.S. Jia, C.W. Han, H.G. Wang & C.B. Liu
Study of blasting vibration effects based on energy input 449
C. En-an, Z. Ming-sheng, H. Tie-zhu & W. Dan-dan
Concept of effective explosive weight per delay for prediction of vibration in open-pit blasting 457
M.P. Roy, P.K. Singh, V.K. Singh, G. Senapati, A.K. Mishra & M. Jawed
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Comparison of two near-field blast vibration estimation models: A theoretical study 465
S. Arora, P. Murmu & K. Dey
An equivalent simulation method for whole time-history blasting vibration 473
J.H. Yang, W.B. Lu, M. Chen, P. Yan & P. Li
Evaluation of the effect of ground vibration due to blasting on adjacent structures
in dam construction projects 483
H.B. Amnieh & A. Siamaki
Analysis of peak particle velocity recorded at underground mine roof generated
by nearby surface blasting: A case study 489
A.K. Singh & A.K. Jha
ANN approach for blast vibration control in limestone quarry 495
S.S. Rathore, S.C. Jain & S. Parik
Section 7 - Health, Safety & Environment
Toxicity of blasting fumes as a function of time after blasting 503
P.D. Katsabanis & K. Taylor
Fines and dust generation and control in rock fragmentation by blasting 511
S. Bhandari
Techniques for the control of environmental blast impacts 521
A.B. Richards & A.J. Moore
Parameters of dust-gas cloud spread resulting from a caving-in explosion 529
K.N. Trubetskoy, S.D. Victorov, V.M. Zakalinsky, A.N. Kochanov & M.B. Etkin
Validation of underwater blast emissions modelling in relation to the protection
of marine fauna 533
R.A. Godson, A. Parker & S.C. Brown
Safety analysis of blasting near natural gas pipeline 541
Y. Jinjie, L. Wanyou, W. Guizhu & C. Minhui
Theoretical considerations and control measures for dust reduction during building
demolition by blasting 545
Z.J. Li & B.X. Zheng
Quantification of the levels of risk of flyrock 549
A. Blanchier
Analysis of blasting related accidents with emphasis on flyrock and its mitigation
in surface mines 555
A.K. Mishra & D.K. Mallick
Spatial distribution of flyrock using EDA: An insight from concrete model tests 563
A.K. Raina, A.K. Soni & V.M.S.R. Murthy
Section 8 - Innovative Blasting Technologies
Shock initiation and malfunction of commercial explosives and accessories: An approach
using the critical energy fluence 571
P.D. Katsabanis
Evaluation of ANFO performance with cylinder test 579
L.M. López, J.A. Sanchidrián, P. Segarra & M.F. Ortega
Research on performance of aluminum-fiber explosives 587
M. Hong-hao, S. Zhao-wu & L. Xue-yan
Experimental research on bubble pulsation parameters in underwater explosion
at unsteady pressure 593
Z. Li, X. Su, H. Lin & L. Xue-jiao
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Measurement of borehole pressure during blasting 599
G. Teowee & B. Papillon
Blasting using permitted P5 category explosive having higher air gap sensitivity
with spacers for higher output 605
M.O. Sarathy, N. Vidyasagar, S.K. Roy & R.R. Singh
Assessment of explosive charge factors in surface blasting using rebound hardness
values of rocks 615
C. Sawmliana, P. Pal Roy & R.K. Singh
Application of innovative techniques in blast design at RAM meeting its production targets 621
R. Shrimali, P.K. Rajmeny, L.S. Shekhawat & A. Joshi
Intelligent mine blasting and its components 627
C.P. Wu, B. Yu & X.C. Yang
Analysis and calculation of the reliability of complex logical initiating network system 631
S. Qi, X. Fang, T. Guo, T. Liu & D. Li
Section 9 - Demolition Blasting
Protection control technology adopted by demolition blasting 639
W. Hao
Time constrained demolition of brick and mortar constructed rail-bridge 645
S.K. Mandal, C. Sawmliana, R.K. Singh & P. Pal Roy
Numerical simulation of explosive demolition of a shear wall structure apartment 651
H.-S. Kim, S.-H. Cho, H. Park & C.-G. Suk
Controlled blasting demolition of 7 joint buildings at the same time in urban area 655
Y.S. Jia, C.W. Han, H.G. Wang & C.B. Liu
Fine demolition blasting for a concrete cofferdam on a concrete dam spill surface 663
X. Cheng-guang
Blasting demolition of single tower cable-stayed unsafe bridge totaling 163 m in length 669
X. Jun, Q. Jinfen, Z. Mingan & C. Bin
Blasting of a reinforced concrete chimney in a high position and in a complex environment 673
L. Guojun & L. Rui
Suggested tamping materials for short length blast holes in explosive demolition operations 677
H.-M. Kang, M.-Y. Shin, S.-K. Kim, S.-H. Cho, H. Park & C.-G. Suk
Section 10 - Rock Damage & Wall Control
Estimation of blast-induced damage through cross-hole seismometry in single-hole
blasting experiments 685
L.F. Trivino & B. Mohanty
Reflections on the functionality of pre-split blasting for wall control in surface mining 697
W.R. Adamson
A numerical analysis of the presplitting controlled blasting method 707
M. Sharafisafa & A. Mortazavi
Wall control by blasting optimization at “Las Cruces” open pit copper mine (Spain) 715
M. Rocha, I. Carrasco, J. Castilla, S. Cooper & M.D. Rodríguez
Assessment of blast-induced damaged zone and its control 725
C.H. Ryu, B.H. Choi & J.H. Jeong
Pre-split blasting for final wall control in a nuclear power project 731
G. Gopinath, H.S. Venkatesh, R. Balachander & A.I. Theresraj
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