Blasting safety and destruction factor control in open pit mines

The buildup of the mineral production and consumption scales, the expansion of the mineral mining industry and the complication of the geographical and geological conditions of mineral mining against the background of the growing depth of open cutting aggravates the problems connected with stimulation of economic efficiency of mining, minimization of manmade loading and observation of regulatory requirements at blasting sites. The analyses of the known methods aimed at reduction of the environmental impact of large-scale blasting in deep open pits show that, despite a plentiful of technological and organizational decisions in this field, the present-day practice of blasting lacks the effective methods and means of suppression of a dust and gas cloud. The situation is associated with the fleetness of the cloud formation under the action of many random factors (weather, choice of explosives, physical and mechanical properties and water content of rocks, etc.). A dust and gas cloud is a tentative object, and its boundaries and parameters change continuously. The preventive engineering and organizational arrangements make it possible to reduce the risk of contingency situations, increase the production safety and rationalize the choice of explosives manufactured at plants in the neighborhood of blasting operations in deep open pits. It is found to be efficient to use a new-design stemming of blast holes as it prevents fly rocks with explosion gases through blast hole mouth, as well as increases duration of explosion momentum and the factor of the explosion utilization energy in rock fragmentation.

Keywords: open pit mine, blasting, stemming, industrial safety, blasting-induced destruction factor control, fly rocks, blasting method, explosion momentum duration extension, environmental impact of explosion.
For citation:

Umarov F. Y., Nasirov U. F., Sh.Sh. Zairov, Fatkhiddinov A. U., Nutfulloev G. S. Blasting safety and destruction factor control in open pit mines. MIAB. Mining Inf. Anal. Bull. 2024;(2):168-181. [In Russ]. DOI: 10.25018/0236_1493_2024_2_0_168.

Acknowledgements:

The study was carried out within the R&D plan for the division of the National University of Science and Technology–MISIS in Almalyk, topic: Efficient Blasting Technology at Reduced Oversize for Open Pit Mines of Almalyk Mining and Metallurgical Plant, Project No. 63-13. This study pursues implementation of the objectives set by the President of the Republic of Uzbekistan, Decree No. PP-4124 dated 17 January 2019: Further Improvement of Performance of the Mining and Metallurgical Industry.

Issue number: 2
Year: 2024
Page number: 168-181
ISBN: 0236-1493
UDK: 622.862.1
DOI: 10.25018/0236_1493_2024_2_0_168
Article receipt date: 03.05.2023
Date of review receipt: 02.11.2023
Date of the editorial board′s decision on the article′s publishing: 10.01.2024
About authors:

F.Y. Umarov1, Dr. Sci. (Eng.), Professor, Director of the branch, Scopus ID 55827283800, e-mail: farkhodbek.umarov@yandex.ru,
U.F. Nasirov1, Deputy Director for Research and Innovation, Scopus ID 56527108100, e-mail: unasirov@yandex.ru,
Sh.Sh. Zairov1, Dr. Sci. (Eng.), Professor, Head of the Sector, e-mail: sher-z@mail.ru, Scopus ID 56527393000, ResearcherID ABC-5825-2020, ORCID ID: 0000-0002-1513-5683,
A.U. Fatkhiddinov, PhD, Acting Assistant Professor, Almalyk branch of Tashkent State Technical University, Almalyk, Republic of Uzbekistan, e-mail unasirov@yandex.ru,
G.S. Nutfulloev1, Dr. Sci. (Eng.), Assistant Professor, Head of the Educational and Methodological Department, Scopus ID 57224988095, e-mail: gafurcom@mail.ru,
1 Almalyk branch of NUST MISiS, Almalyk, Republic of Uzbekistan.

 

For contacts:

Sh.Sh. Zairov, e-mail: sher-z@mail.ru.

Bibliography:

1. Zairov Sh., Ravshanova M., Karimov Sh. Intensification of technological processes in drilling and blasting operations during open-cut mining in Kyzylkum region. Mining of Mineral Deposits. National Mining University. 2018, vol. 12, no. 1, pp. 54—60. DOI: 10.15407/mining12.01.054.

2. Gendler S., Prokhorova E. Risk-based methodology for determining priority directions for improving occupational safety in the mining industry of the Arctic Zone. Resources. 2021, vol. 10, no. 3, article 20. DOI: 10.3390/resources10030020.

3. Hoebbel C. L., Haas E. J., Ryan M. E. Exploring worker experience as a predictor of routine and non-routine safety performance outcomes in the mining industry. Mining Metallurgy & Exploration. 2022, vol. 39, no. 2, pp. 485—494. DOI: 10.1007/s42461-021-00536-2.

4. Shemetov P. A., Ochilov Sh. A. Improvement and development of blasting in Uzbekistan. Mining Bulletin of Uzbekistan. 2013, no. 4, pp. 14—18. [In Russ].

5. Rubtsov S. K., Shemetov V. P., Bibik I. P. Study of rational parameters of the design and composition of the stemming of borehole charges in the conditions of the Muruntau quarry. Mining Bulletin of Uzbekistan. 2002, no. 1, pp. 27—29. [In Russ].

6. Seinov N. P., Zharikov N. F., Valmeev B. S., Udachin G. V. On the effectiveness of the use of active stemming. Explosion technology. 1972, no. 71(28), pp. 134—139. [In Russ].

7. Leshchinskiy A. V., Shevkun E. B. Zaboyka vzryvnykh skvazhin na kar'erakh [Driving blast holes in quarries], Khabarovsk, Izd-vo TOGU, 2008, pp. 95—122.

8. Raimzhanov B. R., Bibik I. P., Shemetov P. A. Increasing the duration of explosive action due to the use of an asymmetric charge in stemming. Sbornik nauchnykh statey Mezhdunarodnoy nauchnoprakticheskoy konferentsii «Innovatsiya-2001» [Collection of scientific articles of the International scientific and practical conference «Innovation-2001»], Tashkent: Izd-vo «Yangi asr avlodi», 2001, pp. 189—191. [In Russ].

9. Zharikov I. F. Razrabotka i nauchnoe obosnovanie energosberegayushchikh tekhnologiy vzryvnykh rabot na otkrytykh razrabotkakh ugol'nykh mestorozhdeniy [Development and scientific substantiation of energy-saving technologies for blasting at open-pit mines of coal deposits], Doctor’s thesis, Мoscow, IGD im. A.A. Skochinskogo, 2001, 45 p.

10. Mendes R., Ribeiro J., Plaksin I., Campos J., Tavares B. Differences between the detonation behavior of emulsion explosives sensitized with glass or with polymeric microballoons. Journal of Physics: Conference Series. 2014, vol. 500, no. 5, article 052030. DOI: 10.1088/1742-6596/500/5/052030.

11. Lei Liu, Zhihua Zhang, Ya Wang, Hao Qin Experimental study on the influence of chemical sensitizer on pressure resistance in deep water of emulsion explosives. IOP Conference Series: Earth and Environmental Science. 2018, vol. 128, article 012137. DOI: 10.1088/1755-1315/128/1/012137.

12. Agrawal H., Mishra A. 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.

13. 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, pp. 351—363. DOI: 10.22211/cejem/78090.

14. Mishra A. K., Rout M., Singh D. R., Jana S. P. Influence of gassing agent and density on detonation velocity of bulk emulsion explosives. Geotechnical and Geological Engineering. 2018, vol. 36, no. 1, pp. 89—94.

15. Bordzilovskii S. A., Karakhanov S. M., Plastinin A. V., Rafeichik S. I., Yunoshev A. S. Detonation temperature of an emulsion explosive with a polymer sensitizer. Combustion, Explosion and Shock Waves. 2017, vol. 53, no. 6, pp. 730—737. DOI: 10.1134/S0010508217060156.

16. Umerbekov Zh. Zh., Goncharenko S. N. Validation of efficiency of the target production safety management model introduction in the mining industry. MIAB. Mining Inf. Anal. Bull. 2019, no. 8, pp. 225—234. [In Russ]. DOI: 10.25018/0236-1493-2019-08-0-225-234.

17. Tyupin V. N., Khaustov V. V. Geomechanical behavior of jointed rock mass versus delay interval in seismic load zone of large-scale blasts. MIAB. Mining Inf. Anal. Bull. 2021, no. 2, pp. 45—54. [In Russ]. DOI: 10.25018/0236-1493-2021-2-0-45-54.

18. Zaytseva E. V., Medyanik N. L. Automated integrated production and selling planning at processing plant in the cement industry.MIAB. Mining Inf. Anal. Bull. 2022, no. 2, pp. 111—123. [In Russ]. DOI: 10.25018/0236_1493_2022_2_0_111.

19. Zairov Sh. Sh., Suleimanov A. A., Fatkhiddinov A. U., Normatova M. Zh., Urinov Sh. R., Nasirov U. F. Certificate of official registration of the computer program No. DGU 14252 on application No. DGU 2021 4201, 12.17.2021. Registered in the state register of computer programs of the Republic of Uzbekistan on 01.17.2022.

20. Zairov Sh. Sh., Suleimanov A. A., Fatkhiddinov A. U., Umarov F. Ya., Normatova M. Zh., Urinov Sh. R. Certificate of official registration of the computer program No. DGU 14251 on application No. DGU 2021 4214, 12.17.2021. Registered in the state register of computer programs of the Republic of Uzbekistan on 01.17.2022.

21. Zairov Sh. Sh., Fatkhiddinov A. U., Suleimanov A. A., Nasirov U. F., Umarov F. Ya., Normatova M. Zh., Urinov Sh. R. Certificate of official registration of the computer program No. DGU 14250 on application No. DGU 2021 4215, 12.17.2021. Registered in the state register of computer programs of the Republic of Uzbekistan on 01.17.2022.

22. Terent'ev V. I. Upravlenie kuskovatost'yu pri potochnoy tekhnologii dobychi rud podzemnym sposobom [Lumpiness control in continuous underground ore mining technology], Moscow, Nedra, 1972, 200 p.

23. Baum F. A., Grigoryan S. S., Sanasaryan N. S. Determination of the explosion pulse along the generatrix of the borehole and the optimal dimensions of the borehole charge. Explosion technology. 1964, no. 54 (11), pp. 53—102. [In Russ].

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