Журналы →  Gornyi Zhurnal →  2022 →  №8 →  Назад

Название Experimental research of shaped charges with electrohydraulic effect with a view to improving blasting safety and efficiency
DOI 10.17580/gzh.2022.08.04
Автор Umarov F. Ya., Nasirov U. F., Nutfulloev G. S., Gaibnazarov B. A.
Информация об авторе

NUST MISIS’ Branch in Almalyk, Almalyk, Uzbekistan:

F. Ya. Umarov, Director, Doctor of Engineering Sciences
U. F. Nasirov, Deputy Director for Science and Innovation, Professor, Doctor of Engineering Sciences
G. S. Nutfulloev, Head of Department, Candidate of Engineering Sciences, gafurcom@mail.ru


Almalyk Branch of the Karimov Tashkent State Technical University, Almalyk, Uzbekistan:
B. A. Gaibnazarov, Senior Lecturer


Ore mining in hard rocks generally includes drilling and blasting. Blasting technologies belong to the most hazardous industrial processes. One of the ways of increasing efficiency of mining is improvement of blasting technologies toward enhancing the rates and efficiency of growth in the mining industry at the reduced risk of injuries. The present-day stage of drilling and blasting in underground mining features the use of high-capacity drilling equipment and tools, introduction of novel drilling and blasting design and implementation methods and technologies, creation of effective mechanisms for application of innovations, and wide-scale adoption of energy- and resource-saving technologies. Higher safety of drilling and blasting ensues from upgrading of drilling equipment, firing devices, explosives and charge designs. The composition of an explosive and the design of a charge have an essential influence on the volume and composition of a gas-and-dust cloud induced in blasting, and on the range of dispersion of broken rock fragments. In this regard, shaped charges have demonstrated their efficiency but their wide introduction needs further studies into specification of the process parameters. This article focuses on the method of experimental research into the shaped charge effect using a science-based electrohydraulic laboratory model. The shaped charges have proved their exploitability. The mathematical formulation of the problem on the blast wave propagation in enclosing rock mass of structurally complex mineral deposits is discussed. The hydrodynamic theory of the shaped charge effect is substantiated and the process parameters are determined.

Ключевые слова Safety, blast wave propagation, detonation products, explosion effect investigation, physical modeling, similarity theory, electric impulse charge, laboratory model, electrohydraulic impact
Библиографический список

1. Dam T. T., Bui X.-N., Nguyen T. T., To D. T. Study on the Reasonable Parameters of the Concentric Hemisphere-Style Shaped Charge for Destroying Rock. Proceedings of the International Conference on Innovations for Sustainable and Responsible Mining. Series: Lecture Notes in Civil Engineering. Vol. 109. Cham : Springer International Publishing, 2020. Vol. 1. pp. 45–68.
2. Shamganova L. S., Syedina S. A., Berdinova N. O. Geomechanical substantiation of the northeastern pit wall stability in Kurzhunkul mine. Eurasian Mining. 2021. No. 1. pp. 30–33. DOI: 10.17580/em.2021.01.06
3. Tyupin V. N. Geomechanical behavior of jointed rock mass in the large-scale blast impact zone. Eurasian Mining. 2020. No. 2. pp. 11–14. DOI: 10.17580/em.2020.02.03
4. Kalmykov V. N., Strukov K. I., Kulsaitov R. V., Esina E. N. Geomechanical features of underground mining at Kochkar deposit. Eurasian Mining. 2017. No. 2. pp. 12–15. DOI: 10.17580/em.2017.02.03
5. Agrawal H., Mishra A. K. A Study on Influence of Density and Viscosity of Emulsion Explosive on Its Detonation Velocity. Modelling, Measurement and Control C. 2018. Vol. 78, No. 3. pp. 316–336.
6. Puchkov L. A., Kaledina N. O., Kobylkin S. S. Systemic approach to reducing methane explosion hazard in coal mines. Eurasian Mining. 2015. No. 2. pp. 3–6. DOI: 10.17580/em.2015.02.01
7. Luchko I. A., Plaksiy V. A., Remez N. S., Boyvan V. S., Bondar P. P. Mechanical impact of explosion in soil. Kiev : Naukova dumka, 1989. 232 p.
8. Lyakhov G. M. Basic dynamics of explosion in soil and in liquid media. Moscow : Nedra, 1964. 216 p.
9. Vovk A. A., Kravets V. G. Modern explosion methods of engineering reclamation of soil. Vzryvnoe delo. 1986. No. 88/45. pp. 4–19.
10. Kravets V. G. Dynamics of soil compaction by blasting. Kiev : Naukova dumka, 1979. 133 p.
11. Amaryan L. S. Strength and deformability of peat soil. Moscow : Nedra, 1969. 191 p.
12. Barton N., Choubey V. The Shear Strength of Rock Joints in Theory and Practice. Rock Mechanics. 1977. Vol. 10, Iss. 1-2. pp. 1–54.
13. Yutkin L. A. Electrohydraulic effect and its application in industry. Leningrad : Mashinostroenie, 1986. 254 p.
14. Yutkin L. A., Goltsova L. I. Method for creating high and superhigh pressure. Patent SSSR, No. 105011. Applied: 15.04.1950.
15. Mertuszka P., Cenian B., Kramarczyk B., Pytel W. Influence of Explosive Charge Diameter on the Detonation Velocity Based on Emulinit 7L and 8L Bulk Emulsion Explosives. Central European Journal of Energetic Materials. 2018. Vol. 15(2). pp. 351–363.
16. Arvind Kumar Mishra, Manamohan Rout, Deepanshu Ranjan Singh, Sakti Pada Jana. Influence of Gassing Agent and Density on Detonation Velocity of Bulk Emulsion Explosives. Geotechnical and Geological Engineering. 2018. Vol. 36, Iss. 1. pp. 89–94.
17. Petterson K. E. Die Kaimauerrufschung in Gothenburg. Tehnisk Tidskrift, 2016.
18. Nutfulloev G. S., Norov Yu. D., Zairov Sh. Sh. et al. Explosive rupture of rock mass by blasthole charges with cumulative effect in underground mining. Patent UZ, No. 20200154. Published: 31.03.2021.
19. Umarov F. Ya., Nasirov U. F., Nutfulloev G. S., Nazarov Z. S., Sharipov L. O. Improving the efficiency of tunneling underground mine workings with the use of blasthole charges with Munroe effect. Izvestiya vuzov. Gornyi zhurnal. 2020. No. 3. pp. 15–23.
20. Umarov F. Ya., Nutfulloev G. S., Belin V. A., Nazarov Z. S. Innovative technology of directional blasting using shaped charges. Gornyi Zhurnal. 2021. No. 5. pp. 63–68. DOI: 10.17580/gzh.2021.05.06

Language of full-text русский
Полный текст статьи Получить