SURFACE MINING
Original Paper
UDC 622.233.016.25© O.I. Cherskikh, A.A. Galimyanov, S.I. Korneeva, V.I. Mishnev, 2023
ISSN 0041-5790 (Print) • ISSN 2412-8333 (Online) • Ugol’ – Russian Coal Journal, 2023, № 5, pp. 50-54
DOI: http://dx.doi.org/10.18796/0041-5790-2023-5-50-54
Title
REFINED FORMULA FOR DETERMINING THE RADIUS DANGEROUS ZONE FOR THE SCATTERING OF INDIVIDUAL PIECES OF ROCK MASS DURING THE EXPLOSION OF BOREHOLE CHARGES
Authors
Cherskikh O.I.1, Galimyanov A.A.2, Korneeva S.I.2, Mishnev V.I. 2
1Solntsevsky Coal Mine LLC, Shakhtersk, 694910, Russian Federation
2Mining Institute of the Far Eastern Branch of the Russian Academy of Sciences, Khabarovsk, 680000, Russian Federation
Authors information
Cherskikh O.I., PhD (Engineering), Director, e-mail: cherskikhoi@eastmining.ru
Galimyanov A.A.,PhD (Engineering), Leading Researcher, Head of the Rock Destruction Sector, e-mail: azot-1977@mail.ru
Korneeva S.I., PhD (Engineering), Chief Scientific Secretary, Leading researcher, e-mail: s_korneeva@mail.ru
Mishnev V.I., Engineer of the Rock Destruction sector, e-mail: mishnev.vl@mail.ru
Abstract
In order to increase the level of efficiency of work on the preparation of rock mass for excavation by drilling and blasting, the formula for calculating the radius of the danger zone for the scattering of pieces of rock mass for mechanisms in the production of mass explosions was empirically clarified on the example of the Solntsevskiy coal mine. The use of this formula made it possible to reduce the radius of the danger zone by two or more times with an acceptable risk on the example of an individual enterprise, while increasing the economic effect. The article substantiates the relevance of applying an individual approach to the calculation of rock movement during an explosion. It is taken into account that the range of expansion is proportional to the kinetic energy of the rock, which is a certain fraction of the charge energy. This article attempts to fill a significant gap in the literature on the physics of explosion and the processes that occur when an explosion affects the environment.
Keywords
The coefficient of removal of the explosive charge from the wellhead, The formula for determining the radius, The danger zone for mechanisms, The scattering of individual pieces of rock, Safe distances, blasting.
References
1. Cherskikh O.I., Galimyanov A.A. & Gevalo K.V. Enhancing drilling and blasting operations at the Solntsevo coal strip mine. Ugol’, 2022, (7), pp. 45-52. (In Russ.). DOI: 10.18796/0041-5790-2022-7-45-52.
2. Federal norms and rules in the field of industrial safety "Safety rules for the production, storage and use of explosive materials for industrial purposes". item 779. As amended by Rostechnadzor Order No. 171. (In Russ.).
3. Kutuzov B.N. Methods of conducting blasting operations. M Mining Book, 2009. p.388.
4. Technical rules for conducting blasting operations on the daytime surface. Moscow, Nedra Publ., 1972, p. 340. (In Russ.).
5. Rubtsov V.K. A refined formula for calculating concentrated ejection charges. Gornyj Zhurnal,1974, (7), pp. 44-46. (In Russ.).
6. Shevkun E.B. & Plotnikov A.Yu. The influence of blasting schemes on processes in the zone of preliminary destruction. Markshejderiya I nedropolzovanie, 2021, 4 (114), pp. 23-34. (In Russ.).
7. Puchkov Ya.M. Kinematics and dynamics of fragments during mass explosions in quarries. Yekaterinburg, Ural Branch of the Russian Academy of Sciences, 2007, 416 p. (In Russ.).
8. Kostyunina O. A., Shevkun E.B. & Leshchinsky A.V. The influence of deceleration intervals on the scattering of rock fragments. Gornyj informatsionno-analyticheskij bulleten, 2021, (12-1), pp. 107-120. (In Russ.).
9. Baum F.A., Orlenko L.P., Stanyukovich K.P., Chelyshev V.P. & Shechter B.I. Physics of Explosion. Moscow, 1975, p.704. (In Russ.).
10. Artemyev V.B., Galkin V.A., Kravchuk I.L., Makarov A.M. & Galkin A.V. Battle map with dangerous industrial situations. Appendix 1 to the practical manual "Production safety". A separate article by Gornyjinformatsionno-analyticheskij bulleten, 2015, (5). (Special issue 21), 40 p. (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
Cherskikh O.I., Galimyanov A.A., Korneeva S.I. & Mishnev V.I. Refined formula for determining the radius dangerous zone for the scattering of individual pieces of rock mass during the explosion of borehole charges. Ugol’, 2023, (5), pp. 50-54. (In Russ.). DOI: 10.18796/0041-5790-2023-5-50-54.
Paper info
Received January 30, 2023
Reviewed March 15, 2023
Accepted April 27, 2023
