Simulation of real detonations as an energy source term for the hybrid stress blasting model

Braithwaite, M., Sharpe, G. J. and Chitombo, G. P. (2009). Simulation of real detonations as an energy source term for the hybrid stress blasting model. In: José A. Sanchidrián, Rock Fragmentation by Blasting: Proceedings of the 9th Int. Symp. on Rock Fragmentation by Blasting. Fragblast 9. FRAGBLAST 9: 9th International Symposium on Rock Fragmentation by Blasting, Granada, Spain, (327-333). 13-17 September, 2009.

Author Braithwaite, M.
Sharpe, G. J.
Chitombo, G. P.
Title of paper Simulation of real detonations as an energy source term for the hybrid stress blasting model
Conference name FRAGBLAST 9: 9th International Symposium on Rock Fragmentation by Blasting
Conference location Granada, Spain
Conference dates 13-17 September, 2009
Proceedings title Rock Fragmentation by Blasting: Proceedings of the 9th Int. Symp. on Rock Fragmentation by Blasting. Fragblast 9
Journal name Rock Fragmentation by Blasting - Proceedings of the 9th International Symposium on Rock Fragmentation by Blasting, FRAGBLAST 9
Place of Publication Boca Raton, FL, USA
Publisher CRC Press
Publication Year 2009
Sub-type Fully published paper
Open Access Status
ISBN 9780415482967
9780203862919
Editor José A. Sanchidrián
Start page 327
End page 333
Total pages 7
Language eng
Formatted Abstract/Summary
Because of the non-ideality of detonations in commercial explosives, a thermo-chemical analysis can only realistically define an optimum, infinite diameter, detonation velocity and equation of state for equilibrium detonation products undergoing an isentropic expansion. Modelling non-ideal detonations requires knowledge of chemical and physical rate processes occurring in the explosive, and of the surrounding non-rigid confinement. Scarcity of data largely precludes any sophisticated rate expression. In earlier work we have demonstrated that Detonation Shock Dynamics can adequately describe a confined detonation in ANFO, using a simple rate law and thermodynamics in comparison with a sophisticated adaptive mesh finite volume computer analysis. This paper describes the extension of this work to a working simulation for use with a PFC blasting model. It comprises: (i) EoS for unreacted explosives (ii) a robust and accurate product EoS representation (iii) a Q1D analysis of the explosive using a simple rate law (iv) a DSD analysis. The overall model is described by a series of computer programs for the ideal Detonation, Q1D and DSD analyses and can be achieved within a few minutes. Application to two typical explosives, ANFO and emulsion, will be described.
Subjects 1906 Geochemistry and Petrology
1909 Geotechnical Engineering and Engineering Geology
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Conference Paper
Collection: Sustainable Minerals Institute Publications
 
Versions
Version Filter Type
Citation counts: Scopus Citation Count Cited 0 times in Scopus Article
Google Scholar Search Google Scholar
Created: Thu, 28 Nov 2013, 04:06:24 EST by System User on behalf of Sustainable Minerals Institute