Table Of ContentE
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There is considerable scope for improving the outcome of any blasting operation through v
basic understanding and application of the principles of blasting science and technology. e
The main objective of Performance of Explosives and New Developments is to sensitize s
the practitioner to critically examine the various empirical approaches in blasting which may a
have been in use for a long time, but lack any sound material basis. On the other hand, where n
the empirical approaches have proven of value, significant additional improvement can be d
achieved through better understanding of the underlying process. None of the components N
involved in a blasting operation should be treated in isolation, as they are all interlinked.
e
Fragmentation of rock by blasting represents the first stage in the size reduction process w
which is essential to extraction of valuable minerals and metals. Therefore, understanding
the performance of the explosive and initiators under actual field conditions, and critical D
assessment of the blast results afterwards are central to effective blast design, improved e
productivity, and novel applications. v
e
Performance of Explosives and New Developments presents the state of the art on l
o
explosive energy, its utilization in blasting, and some new developments and innovative p
applications, and is aimed at academics and practitioners in the field. m
Editors
e
n Bibhu Mohanty and Vinay Kumar Singh
t
s
WS Explosives FINAL.indd 1 15-10-2012 16:07:15
PERFORMANCE OF EXPLOSIVES AND NEW DEVELOPMENTS
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WORKSHOP HOSTED BY FRAGBLAST 10 — THE 10TH INTERNATIONAL SYMPOSIUM ON
ROCK FRAGMENTATION BY BLASTING, NEW DELHI, INDIA, 24–25 NOVEMBER 2012
Performance of Explosives
and New Developments
Editors
Bibhu Mohanty
Department of Civil Engineering and Lassonde Institute of Mining,
University of Toronto, Toronto, Canada
Vinay Kumar Singh
Northern Coalfields Limited, Singrauli, India
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Performance of Explosives and New Developments – Mohanty & Singh (Eds)
© 2013 Taylor & Francis Group, London, ISBN 978-0-415-62142-7
Table of contents
Preface vii
Organising Institution ix
Committees xi
Sponsors xiii
Energy and Performance
Ideal detonation reaction concepts for blasting engineers 3
M. Braithwaite
Non-ideal detonation behavior in commercial explosives 11
M. Braithwaite & G.J. Sharpe
Comparisons of explosive performance measures in theory and practice 17
E.J. Sellers
Energetics and performance of modern commercial explosives 27
B. Mohanty
Boosters and Initiators
The effect of booster size on vibration and airblast and on VODs 37
M. Addy, T. Thomas & F. Korankye
A technique for highly precise and safe delay detonator without primary explosive 41
D. Jian-guo, M. Hong-hao & S. Zhao-wu
Explosives initiation mode and blast performance 49
M.P. Roy, P.K. Singh, A.K. Jha & D. Basu
Studies into firing accuracy of some Indian permitted electric detonators 57
S.K. Roy & R.R. Singh
Explosives, Explosions and New Developments
Detonation behavior of bulk emulsion explosive in water filled blast holes 65
M. Pradhan & R.K. Jade
Experimental research on thermal decomposition character of new coal permitted
water gel explosive 71
Y. Shi-long, R. Dong-mei & W. Hong-bo
Study and performance of low density emulsion explosive 75
A.K. Singh, B.M.P. Pingua, Nabiullah, M.K. Panda & S. Akhtar
PANFO: A novel low-density dry bulk explosive 81
G. Silva & C.P. Orlandi
Underground cavern excavation using underground bulk explosives—an Indian case study 91
A.K. Mishra, K.V.R. Rao, B.E. Rao & D. Joshi
Modeling buried explosion in geotechnical centrifuge 97
X. Liang, Y. Fan, Y. Hou & Y. Yang
v
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Surface coal mines blasting with ANFO in India—a way forward 103
S.R. Sahay, J.S. Mani, S. Kumar & S. Sengar
Causes of explosion in a bulk emulsion explosive plant 111
B.M.P. Pingua & Nabiullah
Author index 119
vi
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Performance of Explosives and New Developments – Mohanty & Singh (Eds)
© 2013 Taylor & Francis Group, London, ISBN 978-0-415-62142-7
Preface
This volume is part of a continuing series of workshops that are normally held in conjunction with the
International Symposium on Rock Fragmentation by Blasting (FRAGBLAST), held at 3–4 year intervals.
Whereas the main symposium is directed at the latest research and developments in the field of rock frag-
mentation, the workshops are geared more towards practitioners in the field. As this volume illustrates,
there is considerable scope for improvement in the outcome of any blasting operation when accompanied
by basic understanding and applications of the principles of blasting science and technology. The main
objective is to sensitize the practitioner to critically examine the various empirical approaches in blast-
ing which may be of long use, but lack any sound physical basis. On the other hand, where the empirical
approaches have proven of value, significant additional improvement can be achieved through better
understanding of the underlying process. The overwhelming message is that none of the components
involved in a blasting operation should be treated in isolation, as they are all inter-linked. Fragmentation
of rock by blasting represents the first stage in the size reduction process which is essential to liberation
of valuable minerals and metals. Therefore, understanding the performance of the explosive and initiators
under actual field conditions, and critical assessment of the blast results afterwards are central to effective
blast design, improved productivity, and novel applications.
B. Mohanty
University of Toronto, Toronto, Canada
V.K. Singh
Northern Coalfields Limited, Singrauli, India
vii
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TThhiiss ppaaggee iinntteennttiioonnaallllyy lleefftt bbllaannkk
Performance of Explosives and New Developments – Mohanty & Singh (Eds)
© 2013 Taylor & Francis Group, London, ISBN 978-0-415-62142-7
Organising Institution
ix
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