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Название Efficiency of stemming in open pit mining at Malomir Mine
DOI 10.17580/gzh.2024.06.09
Автор Galimyanov An. A., Plotnikov A. Yu., Kazarina E. N., Mishnev V. I.
Информация об авторе

Institute of Mining, Far Eastern Branch, Russian Academy of Sciences, Khabarovsk, Russia

An. A. Galimyanov, Leading Engineer at Rock Fracture Sector
E. N. Kazarina, Junior Researcher at Rock Fracture Sector, kazarinaen@mail.ru
V. I. Mishnev, Junior Researcher at Rock Fracture Sector

 

AVT-Amur LLC, Blagoveshchensk, Russia

A. Yu. Plotnikov, Deputy Chief Engineer, Candidate of Engineering Sciences

Реферат

Vast practice of blasting proves stemming improves quality of explosions. At the same time, experience of some open pit mines doubts need of stemming as one of the main factors of blasting efficiency and, accordingly, justifies waiving stemming off. Aimed to specify efficiency of stemming, the Institute of Mining, FEB RAS performed experimental blasting at the open pit of the Malomir Mine. The test blocks were divided into two parts for blasting with drill cutting stemming in one part and without stemming in the other part. Efficiency of stemming was estimated in terms of the flying-off height of explosion products in a certain time interval, and also by calculation of the interval emission velocities of dust and gas products with the further adjustment of the results by means of the stopwatch study of the rate of broken rock loading in dump trucks. The studies on the efficiency of drill cutting stemming, with the evidence of the graphical analysis data on the interval flying-off velocities of explosion products from blastholes to a certain height, confirmed by the stopwatch results of excavator capacity give no credence to the relevance of drill cutting stemming in the actual geological conditions and at the current blasting design in block no. 3 of Center site on Level of 455–450 m at the Malomir Mine.

Ключевые слова Stemming, stemming material, drill cuttings, explosion products, delay, massive explosion, borehole charge
Библиографический список

1. Isheiskiy V. A., Martynushkin E. A., Vasiliev A. S., Smirnov S. A. Data collection features of during the blast wel ls drilling for the formation of geostructural block models. Ustoychivoe razvitie gornykh territoriy. 2021. Vol. 13, No. 4(50). pp. 608–619.
2. Marinin M. A., Evgrafov M. V., Dolzhikov V. V. Production of blasting operations for a given granulometric composition of ore within the framework of the “mineto-mill” concept: Current state and prospects. Bulletin of the Tomsk Polytechnic University. 2021. Vol. 332, No. 7. pp. 65–74.
3. Khokhlov S. V., Vinogradov Yu. I., Noskov A. P., Bazhenova A. V. Predicting displacements of ore body boundaries in generation of blasted rock pile. MIAB. 2023. No. 3. pp. 40–56.
4. Afanasev P. I., Makhmudov K. F. Assessment of the parameters of a shock wave on the wall of an explosion cavity with the refraction of a detonation wave of emulsion explosives. Applied Sciences. 2021. Vol. 11, Iss. 9. ID 3976.
5. Komkov V. G. Laboratory bench tester of blocking ability of stemming in blastholes. Young Scientists—To the Khabarovsk Krai : XXI Local Contest of Young Scientists and Postgraduates. Khabarovsk : Tikhookeanskiy gosudarstvennyi universitet, 2019. pp. 145–148.
6. Konya C. J., Konya A. Effect of hole effect of hole stemming practices on energy efficiency of comminution. Energy Efficiency in the Minerals Industry: Best Practices and Research Directions. Cham : Springer, 2018. pp. 31–53.
7. Zhang Z.-X., Hou D.-F., Guo Z., He Z. Laboratory experiment of stemming impact on rock fragmentation by a high explosive. Tunnelling and Underground Space Technology. 2020. Vol. 97. ID 103257.
8. Tobin G. The Importance of Energy Containment to the Blast Outcome & Justification for use of Stemming Plugs in Over Burden Removal. Oresome Products Pty Ltd., 2013. Available at: https://www.ipcn.nsw.gov.au/resources/pac/media/files/pac/projects/2019/04/rixs-creek-coal-mine-mod-10/writtencomments/ssheg-oresomeproductsaus-sept-2013-energy-containment.pdf (accessed: 30.04.2024).
9. Makkoev V. A., Khokhlov S. V., Suvorov Yu. I., Sivtsev I. A. On the expediency of the use of a face in the conditions of blasting of multi-strength rocks. Vzryvnoe delo. 2021. No. 133-90. pp. 137–148.
10. Kurchin G. S., Lobatsevich M. A., Petushkova T. A., Efremov P. Yu. Efficiency of stemming in blastholes. Sciences of the Earth : Yesterday, Today, Tomorrow. IV International Conference Proceedings. Kazan : Molodoy uchenyi, 2018. pp. 17–19.
11. Vokhmin S. A., Kurchin G. S., Kirsanov A. K. Process of rock fracture in blasting of an explosive. Vestnik Zabaykalskogo gosudarstvennogo universiteta. 2015. No. 11(126). pp. 10–22.
12. Oates T. E., Spiteri W. Stemming and best practice in the mining industry: A literature review. Journal of the Southern African Institute of Mining and Metallurgy. 2021. Vol. 121, No. 8. pp. 415–425.
13. Leshchinsky A. V., Shevkun E. B. Influence of the design of blasting wells tamping on reducing the yield of oversize rock mass material. Problemy nedropolzovaniya. 2020. No. 1(24). pp. 93–102.
14. Yastrebova K., Moldovan D., Chernobay V. Influence of the nature of the outflow of explosion products from blast holes and boreholes on the efficiency of rock destruction. Proceedings of V International Innovative Mining Symposium. 2020. E3S Web of Conferences. 2020. Vol. 174. ID 01017.
15. Kazarina E. N., Galimyanov A. A., Rasskazova A. V., Mishnev V. I. The effectiveness of the application of the face on the example of the destruction of concrete structures by deflagration. Izvestiya Tulskogo gosudarstvennogo universiteta. Nauki o Zemle. 2023. No. 1-1. pp. 456–462.
16. Moldovan D. V., Chernobay V. I., Sokolov S. T., Bazhenova A. V. Design concepts for explosion products locking in chamber. MIAB. 2022. No. 6-2. pp. 5–17.
17. Kutuzov B. N. Methods of blasting operations : Textbook. 3rd ed. Moscow : Gornaya kniga, 2018. Vol. 1. Blast destruction of rocks. 476 p.
18. Shevkun E. B., Leshchinskiy A. V., Lysak Yu. A., Plotnikov A. Yu. Features of explosive loosening at the increased intervals of delay. MIAB. 2017. No. 4. pp. 272–282.
19. Shevkun E. B., Leshchinskiy A. V., Galimyanov A. A., Rudnitskiy K. A. Production tests of combined shothole stemming. MIAB. 2014. No. 4. pp. 97–107.
20. Mityushkin Yu. A., Lysak Yu. A., Plotnikov A. Yu., Ruzhitskiy A. V., Shevkin E. B. et al. Optimization of parameters of explosive works increase in intervals of delay. MIAB. 2015. No. 4. pp. 341–348.
21. Marinin M. A., Rakhmanov R. A., Alenichev I. A., Afanasev P. I., Sushkova V. I. Effect of grain size distribution of blasted rock on WK-35 shovel performance. MIAB. 2023. No. 6. pp. 111–125.
22. Zhang Z.-X., Qiao Y., Chi L. Y., Hou D.-F. Experimental study of rock fragmentation under different stemming conditions in model blasting. International Journal of Rock Mechanics and Mining Sciences. 2021. Vol. 143. ID 104797.
23. Zhang Z.-X., Hou D.-F., Guo Z., He Z., Zhang Q. Experimental study of surface constraint effect on rock fragmentation by bla sting. International Journal of Rock Mechanics and Mining Sciences. 2020. Vol. 128. ID 104278.
24. Dolzhikov V. V., Ryadinsky D. E., Yakovlev A. A. Influence of deceleration intervals on the amplitudes of stress waves during the explosion of a system of borehole charges. MIAB. 2022. No. 6-2. pp. 18–32.

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