Журналы →  Gornyi Zhurnal →  2024 →  №4 →  Назад

PHYSICS OF ROCKS AND PROCESSES
Название Solution of centrally symmetric problem on propagation of perturbations in rocks during camouflet explosion
DOI 10.17580/gzh.2024.04.03
Автор Sednev V. A., Kopnyshev S. L., Sednev A. V.
Информация об авторе

Academy of State Fire Prevention Service, EMERCOM of Russia, Moscow, Russia
V. A. Sednev, Professor, Doctor of Engineering Sciences, Sednev70@yandex.ru
S. L. Kopnyshev, Senior Researcher, Associate Professor, Candidate of Engineering Sciences

 

Bauman Moscow State Technical University, Moscow, Russia

A. V. Sednev, Student

Реферат

The use of the enormous energy contained in explosives is increasingly being used in various fields of human activities. Especially effective is the use of camouflet charges—buried explosives which produce the destructive effect without visible disturbances on ground surface. Despite the simplicity and accessibility of camouflet blasting, the issues of safety of such work are important. The camouflet explosion eliminates air shock waves and harmful effects of the explosion products on the environment, but leads to strong seismic vibrations. The blasting-induced seismic impact on nearby objects can initiate their load-bearing capacity loss, damage and destruction; therefore, when choosing locations for camouflet charges, it is required to assess PPV in enclosing medium during blasting, and to determine distances at which PPV are lower than the maximum allowable values set for the objects under consideration. The article presents the solution of a centrally symmetric problem on the particle velocity field in a continuous elastoplastic medium during camouflet explosion under the assumption of vibrationless motion and incompressibility of the medium in the plastic and elastic domains. The dependences are obtained for determining the dimensions of the expansion zones and the plastic deformation of the medium. The solution is based on the “camouflet equation” previously obtained by the authors—the relation to find pressure on the contact surface of an expanding spherical cavity due to internal pressure.

Ключевые слова Rocks, soils, pressure, safety, camouflet explosion, elastoplastic medium, particle velocity field, expansion
Библиографический список

1. Kutuzov B. N. Blasting methods. Vol. 2. Blasting in mining and industry : Textbook. 2nd ed. Moscow : Gornaya kniga, 2011. 512 p.
2. Gorodnichenko V. I., Dmitriev A. P. Basis of mining : Textbook. 2nd ed. Moscow : Gornaya kniga, 2016. 443 p.
3. Komashchenko V. I., Atrushkevich V. A., Kachurin N. M., Stas G. V. The effectiveness of borehole charges in the destruction of rocks by explosion. Ustoychivoe razvitie gornykh territoriy. 2019. Vol. 11, No. 2(40). pp. 191–198.
4. Komashchenko V. I. Application of advanced initiation and design of borehole charges to improve rock fragmentation quality. Ustoychivoe razvitie gornykh territoriy. 2015. Vol. 7, No. 2(24). pp. 12–17.
5. Trubetskoy K. N., Kaplunov D. R. (Eds.). Mining : Terminology reference book. 5th revised and enlarged edition. Moscow : Gornaya kniga, 2016. 635 p.
6. Bovt A. N., Lovetskiy E. E., Selyakov V. I. et al. Mechanical action of camouflet explosion. Moscow : Nedra, 1990. 184 p.
7. Chadwick P., Cox A. D., Hopkins H. G. Mechanics of deep underground explosions. London, 1964. 300 p.
8. Orlenko L. P. (Ed.). Physics of blast. In two volumes. Third enlarges and revised edition. Moscow : Fizmatlit, 2004. 1471 p.
9. Man K., Liu X., Song Z. Blasting vibration monitoring scheme and its application. Journal of Vibroengineering. 2021. Vol. 23, No. 7. pp. 1640–1651.
10. Xu S., Li Y., Liu J., Zhang F. Optimization of blasting parameters for an underground mine through prediction of blasting vibration. Journal of Vibration and Control. 2019. Vol. 25, Iss. 9. pp. 1585–1595.
11. Ammon C. J., Velasco A. A., Lay T., Wallace T. C. Foundations of Modern Global Seismology. 2nd ed. London : Academic Press, 2020. 586 p.
12. Armaghani D. J., Kumar D., Samui P., Hasanipanah M., Roy B. A novel approach for forecasting of ground vibrations resulting from blasting : Modifed particle swarm optimization coupled extreme learning machine. Engineering with Computers. 2021. Vol. 37, Iss. 4. pp. 3221–3235.
13. Wang J., Yin Y., Esmaieli K. Numerical Simulations of Rock Blasting Damage Based on Laboratory Scale Experiments. Journal of Geophysics and Engineering. 2018. Vol. 15, Iss. 6. pp. 2399–2417.
14. Chkalova O. N. Fundamentals of scientific research : Tutorial. Kiev : Vishcha shkola, 1978. 118 p.
15. Ruzavin G. I. Methods of scientific research. Moscow : Mysl, 1975. 237 p.
16. Chernukha N. A. Structural Analysis of Buildings at Explosive Actions in SCAD. Inzhenerno-stroitelnyi zhurnal. 2014. No. 1. pp. 12–22.
17. Sednev V. A., Kopnyshev S. L., Sednev A. V. Determination of camouflet explosion parameters. Journal of Applied Mechanics and Technical Physics. 2023. Vol. 64, No. 6. pp. 972–978.
18. Bell J. F. Mechanics of Solids. Berlin : Springer, 1973. Vol. I: The Experimental Foundations of Solid Mechanics. 813 p.
19. Sednev V. A., Kopnyshev S. L. The model of structural materials and soils behavior under the impact of dynamic loads. Journal of Machinery Manufacture and Reliability. 2018. No. 2. pp. 82–87.
20. Sednev V. A., Kopnyshev S. L. Theoretical bases of the requirements substantiation to physical stability of hydrotechnical structures and other energetics objects at external dynamicimpact. Problemy bezopasnosti i chrezvychaynykh situatsiy. 2018. No. 6. pp. 43–62.
21. Sednev V. A., Kopnyshev S. L. The model of spherical cavity expansion in the elastoplastic environment with its hardening. Journal of Machinery Manufacture and Reliability. 2018. No. 4. pp. 105–113.
22. Sednev V. A., Kopnyshev S. L., Sednev A. V. Research of process stages and justification of mathematical model of spherical cavity expansion in soils and rocks. Ustoychivoe razvitie gornykh territoriy. 2020. Vol. 12, No. 2(44). pp. 302–314.
23. Ishlinskiy A. Yu., Zvolinskiy N. V., Stepanenko N. Z. Dynamics of soil masses. Transactions of the USSR Academy of Sciences. Earth Science Sections. 1954. Vol. 95, No. 4.
24. Shemyakin E. I. Expansion of gas cavity in incompressible elastoplastic medium. (Studying effect of explosion on soil). Journal of Applied Mechanics and Technical Physics. 1961. No. 5. pp. 91–99.
25. Kharlanyuk L. F., Kopnyshev S. L. Buried explosion pervasion dynamics : Analysis of dynamics of inelastic medium in applied problems on impact and explosion. Moscow, 2009. 165 p.
26. Samul V. I. The elements of theory of elasticity and plasticity : Tutorial. 2nd revised edition. Moscow : Vysshaya shkola, 1982. 264 p.
27. Struzhanov V. V., Burmasheva N. V. Theory of elasticity—Basic provisons : Tutorial. Yekaterinburg : Izdatelstvo Uralskogo universiteta, 2019. 204 p.
28. Tsytovich N. A. Mechanics of soils: Full course. Series: Classics of engineering thinking. Construction. Moscow : Lenand, 2022. 640 p.
29. Available at: https://docs.cntd.ru/document/573219717 (accessed: 30.03.2024).

Language of full-text русский
Полный текст статьи Получить
Назад