SURFACE MINING
Original Paper
UDC 662.1/4:622.235 © A.A. Galimyanov, D.E. Gerasimov, K.V. Gevalo, V.I. Mishnev, A.A. Galimyanov, 2022
ISSN 0041-5790 (Print) • ISSN 2412-8333 (Online) • Ugol’ – Russian Coal Journal, 2022, № 11, pp. 55-61
DOI: http://dx.doi.org/10.18796/0041-5790-2022-11-55-61
Title
FACTORS AFFECTING THE DETONATION VELOCITY OF AN EXPLOSIVE CHARGE
Authors
Galimyanov A.A.1, Gerasimov D.E.2, Gevalo K.V.1, Mishnev V.I.1, Galimyanov A.A.1
1 Institute of Mining Engineering of the Khabarovsk Federal Research Center, the Far East Branch of the Russian Academy of Sciences, Khabarovsk, 680000, Russian Federation
2Amurvzryvprom JSC, Khabarovsk, 680020, Russian Federation
Authors information
Galimyanov A.A., PhD (Engineering), Leading Research Associate, Head of Rock Disintegration Sector,e-mail: azot-1977@mail.ru
Gerasimov D.E., Director General, e-mail: amur_vzriv_prom@mail.ru
Gevalo K.V., Engineer of Rock Disintegration Sector, e-mail: igddvo@yandex.ru
Mishnev V.I., Engineer of Rock Disintegration Sector, e-mail: vovchenskiycf@gmail.com
Galimyanov A.A., Leading Engineer of Rock Disintegration Sector, e-mail: stanxi@mail.ru
Abstract
In the production of explosive works, it is important not only to control the input of explosive materials when they arrive at the enterprise from the supplier, but also to measure the detonation rate of the charge in the field, especially mixed emulsion explosives. The detonation rate of the explosive charge, as one of its most important characteristics affecting the quality of the explosion, depends on many factors, the main of which are: the quality of preparation of explosives and their components, the density, diameter and height of the charge column, the parameters of the intermediate detonator and its location along the length of the charge. The correct approach with the use of appropriate preliminary measurements will improve the efficiency and safety of preparing the rock mass for excavation by drilling and blasting. The article presents a methodology for measuring the detonation rates of a borehole charge with the corresponding results and conclusions.
Keywords
Measurement of the detonation rate of the explosive charge, Measuring instruments, Parameters of drilling and blasting operations, The design of the borehole charge, Time intervals, pulse reflectometry.
References
1. Mesec Josip, Zganec Stjepan & Kovac Ivan. In-hole velocity of detonation (VOD) measurements as a framework for the selection type of explosive. International Journal of Mining Science and Technology, 2015, Vol. 25, (4), pp. 675-680.
2. Kutuev V.A., Menshikov P.V. & Zharikov S.N. Analysis of research methods of detonation processes of explosives. Problems of subsoil use, 2016, (4), pp. 78-87.(In Russ.).
3. Seo M., Rutter B., Johnson C.E., Torrance A. & Cavanough G. Innovative method to measure velocity of detonation by electromagnetic pulse (EMP). Helsinki Conference Proceedings, 2019, pp. 263-273.
4. Gorinov S.A. Scientific and technical bases and technologies for ensuring stable detonation of emulsion explosives in borehole charges. Dr. eng. sci. diss. Yekaterinburg, Institute of Mining of the Ural Branch of the Russian Academy of Sciences, 2018, 299 p. (In Russ.).
5. Zhendong Leng, Jinshan Sun, Wenbo Lu, Xianqi Xie, Yongsheng Jia, Guisong Zhou & Ming Chen. Mechanism of the in-hole detonation wave interactions in dual initiation with electronic detonators in bench blasting operation. Computers and Geotechnics, 2021, Vol. 129.
6. Shvedov K.K. & Anisimov V.N. The concept and real ways of creating industrial explosives for high-quality crushing of rocks. Gornaya promyshlennost, 2008, (1), pp. 26. (In Russ.).
7. Sosnin V.A., Mezheritsky S.E. & Pechener Yu.G. The state and prospects of development of industrial explosives in Russia and abroad. Gornaya promyshlennost, 2017, (5), pp. 60-64. (In Russ.).
8. Dobrynin I.A. Results of measurement of detonation velocity in borehole charges in mining enterprises.Bezopasnost truda vpromyshlennosti,2008, (6), pp. 42-46. (In Russ.).
9. Eugie Kabwe. Velocity of detonation measurement and fragmentation analysis to evaluate blasting efficacy. Journal of Rock Mechanics and Geotechnical Engineering, 2018, Vol. 10, (3), pp. 523-533.
10. Daniel Ainalis, Olivier Kaufmann, Jean-Pierre Tshibangu, Olivier Verlinden & Georges Kouroussis. Modelling the Source of Blasting for the Numerical Simulation of Blast-Induced Ground Vibrations. Rock Mechanics and Rock Engineering, 2017, (50), pp. 171–193.
11. Balakrishnan V., Pradhan M. & Dhekne P.Y. Field investigation in the detonation behavior of emulsion explosive column induced with air gaps. Mining Science, 2019, (26), pp. 55-68.
12. SHOTTRACK. [Electronic resource]. Available at:www.shottrack.com.au/product/shottrack-vod-305 (accessed 15.10.2022).
13. Diakonov V.P. Reflectometry and pulse reflectometers. Componenty i tekhnologii, 2012, (1), pp. 164-172. (In Russ.).
14. Gorinov S.A. & Maslov I.Yu. Initiation of EVV by coherent intermediate detonators. Gornyj informationno-analyticheskij byulleten, 2017, (4), pp. 293-304. (In Russ.).
Acknowledgements
The studies were carried out using the resources of the Center for Shared Use of Scientific Equipment "Center for Processing and Storage of Scientific Data of the Far Eastern Branch of the Russian Academy of Sciences", funded by the Russian Federation represented by the Ministry of Science and Higher Education of the Russian Federation under project No. 075-15-2021-663.
For citation
Galimyanov A.A., Gerasimov D.E., K.V. Gevalo K.V., Mishnev V.I. & Galimyanov A.A. Factors affecting the detonation velocity of an explosive charge.Ugol’, 2022, (11), pp. 55-61. (In Russ.). DOI: 10.18796/0041-5790-2022-11-55-61.
Paper info
Received September 7, 2022
Reviewed September 29, 2022
Accepted October 26, 2022
