Method for calculation of drilling-and-blasting operations parameters for emulsion explosives
M. Kononenko1, O. Khomenko1, M. Savchenko2, I. Kovalenko3
1Dnipro University of Technology, Dnipro, Ukraine
2Ltd IST-FORT, Kharkiv, Ukraine
3Ukrainian State University of Chemical Technology, Dnipro, Ukraine
Min. miner. depos. 2019, 13(3):22-30
Full text (PDF)
Purpose. Development of a new method for calculation of drilling-and-blasting operations parameters during underground mining with application of emulsion explosives taking into account their energy characteristics as well as physical and mechanical properties of rocks.
Methods. The integrated methodological approach including analytical transformations of the received formulas for calculation of drilling-and-blasting operations parameters, their improvement and also computer modeling on the basis of a finite element method were used for the establishment of compression zones and formations of cracks in the massif around shots taking into account such energy characteristics of emulsion explosive as detonation velocity, explosion heat, density of the explosives, etc.
Findings. The relative force coefficient was determined for the emulsion explosive of “Ukrainit” type taking into account the extent of detonation velocity realization, which allowed to calculate the necessary amount of explosives. On the basis of experimental data, consistent patterns of detonation velocity change depending on the charge density and diameter yielding to power law are determined for the emulsion explosive of “Ukrainit” type. Improvements have been made to the analytical ex-pression determining the sizes of compression and fracturing zones around blast holes taking into account energy characteristics of the emulsion explosive of “Ukrainit” type as well as physical and mechanical properties of the blasted rocks. This allowed to develop a new algorithm of calculating parameters for drawing up the passport of drilling-and-blasting operations during underground mining.
Originality.The method for calculating drilling-and-blasting operations parameters is based on the regularities of emulsion explosives energy characteristics change, the extent of detonation velocity realization as well as physical and mechanical properties of rocks.
Practical implications. A new method has been developed for calculation of drilling-and-blasting operations parameters during mining with emulsion explosives application, which results in minimization of energy consumption for the mass breakage.
Keywords: drilling-and-blasting operations, emulsion explosives, explosion heat, explosive force, detonation velocity, compression and fracturing
Andrievskij, A.P., Avdeev, A.M., Zileev, G.P., & Zileev, A.G. (2004). Influence of action time of explosion pulse of longer charge on formed explosion funnel radius. Izvestiya Vysshikh Uchebnykh Zavedenii, Gornyy Zhurnal, (2), 92-96.
Andrievskiy, A.P., & Avdeev, A.M. (2006). Metodika opredeleniya parametrov vzryvaniya pri ochistnoy dobyche i prokhodke gornykh vyrabotok. Izvestiya Vysshikh Uchebnykh Zavedeniy. Gornyy Zhurnal, (6), 60-65.
Andrievskiy, A.P., & Kutuzov, B.N. (1992). Zakonomernost’ formirovaniya zon smyatiya i treshchinoobrazovaniya pri vozdeystvii na skal’nyy massiv energiey vzryva udlinennogo zaryada: otkrytie. Otkrytie No. 70. Moskva, Rossiya.
Brown, G.I. (1998). The big bang: a history of explosives. Stroud, United Kingdom: Sutton Pub Ltd.
Chernai, A.V., Sobolev, V.V., Chernai, V.A., Ilyushin, M.A., & Dlugashek, A. (2003). Laser ignition of explosive compositions based on di-(3-hydrazino-4-amino-1,2,3-triazole)-copper (II) perchlorate. Combustion, Explosion and Shock Waves, 39(3), 335-339.
Gorinov, S.A., Kuprin, V.P., & Kovalenko, I.L. (2009). Evaluation of the detonation ability emulsion explosives. High Energy Materials Processing, 18-26.
Gorova, A., Pavlychenko, A., Borysovs’ka, O., & Krups’ka, L. (2013). The development of methodology for assessment of environmental risk degree in mining regions. Annual Scientific-Technical Collection – Mining of Mineral Deposits 2013, 207-209.
Kholodenko, T., Ustimenko, Y., Pidkamenna, L., & Pavlychenko, A. (2014). Ecological safety of emulsion explosives use at mining enterprises. Progressive Technologies of Coal, Coalbed Methane, and Ores Mining, 255-260.
Kholodenko, T., Ustimenko, Y., Pidkamenna, L., & Pavlychenko, A. (2015). Technical, economic and environmental aspects of the use of emulsion explosives by ERA brand in underground and surface mining. New Developments in Mining Engineering 2015: Theoretical and Practical Solutions of Mineral Resources Mining, 211-219.
Khomenko, O.Y., Kononenko, M.M., Myronova, I.G., & Sudakov, A.K. (2018). Increasing ecological safety during underground mining of iron-ore deposits. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (2), 29-38.
Khomenko, O., Kononenko, M., & Bilegsaikhan, J. (2018). Classification of theories about rock pressure. Solid State Phenomena, (277), 157-167.
Khomenko, O., Kononenko, M., & Myronova, I. (2013). Blasting works technology to decrease an emission of harmful matters into the mine atmosphere. Annual Scientific-Technical Collection – Mining of Mineral Deposits 2013, 231-235.
Khomenko, O., Kononenko, M., & Myronova, I. (2017). Ecological and technological aspects of iron-ore underground mining. Mining of Mineral Deposits, 11(2), 59-67.
Khomenko, O., Kononenko, M., & Petlovanyi, M. (2015). Analytical modeling of the backfill massif deformations around the chamber with mining depth increase. New Developments in Mining Engineering 2015: Theoretical and Practical Solutions of Mineral Resources Mining, 265-269.
Khomenko, O., Rudakov, D., & Kononenko, M. (2011). Automation of drill and blast design. Technical and Geoinformational Systems in Mining, 271-275.
Kolesnik, V.Ye., Borysovs’ka, O.O., Pavlychenko, A.V., & Shirin, A.L. (2017). Determination of trends and regularities of occurrence of emergency situations of technogenic and natural character in Ukraine. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (6), 124-131.
Kutuzov, B.N., & Andrievskiy, A.P. (2003). Novaya teoriya i novye tekhnologii razrusheniya gornykh porod udlinennymi zaryadami vzryvchatykh veshchestv. Novosibirsk, Rossiya: Nauka.
Mertuszka, P., & Kramarczyk, B. (2018). The impact of time on the detonation capacity of bulk emulsion explosives based on Emulinit 8L. Propellants, Explosives, Pyrotechnics, 43(8), 799-804.
Mertuszka, P., Cenian, B., Kramarczyk, B., & Pytel, W. (2018). Influence of explosive charge diameter on the detonation velocity based on Emulinit 7L and 8L bulk emulsion explosives. Central European Journal of Energetic Materials, 15(2), 351-363.
Mironova, I., & Borysovs’ka, O. (2014). Defining the parameters of the atmospheric air for iron ore mines. Progressive Technologies of Coal, Coalbed Methane, and Ores Mining, 333-339.
Myronova, I. (2015). The level of atmospheric pollution around the iron-ore mine. New Developments in Mining Engineering 2015: Theoretical and Practical Solutions of Mineral Resources Mining, 193-197.
Onika, S.G., & Stasevich, V.I. (2005). Razrushenie gornykh porod vzryvom. Minsk: BNTU.
Pokrovsky, N.M. (1977). Underground structures and mines construction practices. Nairobi, Kenya: University of Nairobi.
Shekhurdin, V.K. (1985). Zadachnik po gornym rabotam, provedeniyu i krepleniyu gornykh vyrabotok.
Wang, X. (1994). Emulsion explosives. Beijing, China: Metallurgical Industry Press.