Abstract
The article presents the design model and results for the main crack development in closely spaced blasting in brittle rocks. The 3D modeling is described as case-study of crack formation in granite in perimeter blasting of ammonite charges at different spacing and filling of blastholes. The shapes and sizes are determined for the main cracks generated by blasting of single charge and three close-spaced charges. From the modeling results obtained for a specific charge, the method is proposed to determine efficient spacing of blastholes in perimeter blasting to ensure the maximal area of the created crack.
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REFERENCES
Gustafsson, R., Swedish Blasting Technique, SPI, 1973.
Brotanek, I and Voda, J., Perimeter Blasting in Mining and Construction, Moscow: Nedra, 1983.
Flyagin, A.S. and Zharikov, S.N., Perimeter Blasting in Mining, Vzryv. Delo, 2015, no. 114/71, pp. 194–201.
Shilova, T.V. and Serdyukov, S.V., Protection from Operating Degassing Holes from Air Inflow from Underground Excavations, Journal of Mining Science, 2015, vol. 51, no. 5, pp. 1049–1055.
Eshonkulov, U.Kh., Olimov, F.M., Saidakhmedov, A.A., et al., Justification of Perimeter Blasting in Construction of Large Cross-Section Roadways in Strong Rocks, Dostizh. Nauki Obraz., 2018, no. 19 (41), pp. 10–13.
Zharikov, S.N. and Shemenev, V.G., Impact of Blasting on Pit Wall Stability, Gornyi Zhurnal, 2013, no. 2, pp. 80–83.
Kozyrev, S.A. and Kamyansky, V.N., Numerical Models of Blasting in Rocks, Vestn. KNTS RAN, 2019, no. 2 (11), pp. 34–44.
Sher, E.N. and Chernikov, A.G., Calculating Parameters of Radial Crack System Induced by Elongated Charge Blasting in Brittle Rocks, J. Fundament. Appl. Min. Sci., 2015, vol. 2, pp. 299–303.
Grigoryan, S.S., Some Issues of Mathematical Theory of Solid Rock Deformation and Fracture, Prikl, Mekh. Matem., 1967, vol. 31, issue 4, pp. 643–669.
Rodionov, V.N., Adushkin, V.V., Romashev, A.N. et al., Mekhanicheskii effekt podzemnogo vzryva (Mechanical Effect of Underground Explosion), Moscow: Nedra, 1971.
Chadwick, P., Cox, A.D., and Hopkins, H.G., Mechanics of Deep Underground Explosions, Philosophical Transactions of the Royal Society A, 1964, vol. 256, issue 1070.
Sher, E.N., Modeling Propagation of Fractures in Layered Rock Mass during Blasting and Hydraulic Fracturing, Journal of Mining Science, 2020, vol. 56, no. 6, pp. 914–924.
Sher, E.N. and Aleksandrova, N.I., Dynamics of Development of Crushing Zone in in Elastoplastic Medium in Camouflet Explosion of String Charge, Journal of Mining Science, 2019, vol. 33, no. 6, pp. 529–535.
Crouch, S.L. and Starfield, A.M., Boundary Elements in Solid Mechanics, Unwin Hyman., 1983.
Mikhailov, A.M., Calculation of the Stresses around a Crack, Journal of Mining Science, 2000, vol. 36, no. 5, pp. 445–451.
Peach, M. and Koehler, J.S., The Forces Exerted On Dislocations and The Stress Fields Produced by Them, Phys. Rev., 1950, vol. 80, vol. 3, pp. 436–440.
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Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2023, No. 5, pp. 70-77. https://doi.org/10.15372/FTPRPI20230508.
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Sher, E.N. Modeling Rock Fracture in Closely Spaced Perimeter Blasting. J Min Sci 59, 763–769 (2023). https://doi.org/10.1134/S1062739123050083
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DOI: https://doi.org/10.1134/S1062739123050083