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ArticleName Destress blasting in deep mines of NorNickel’s Polar Division
DOI 10.17580/gzh.2021.02.04
ArticleAuthor Sabyanin G. V., Shilenko S. Yu., Trofimov A. V., Kirkin A. P.

NorNickel, Moscow, Russia:

G. V. Sabyanin, Head of Mining and Processing Management at Production Technology Department, Candidate of Engineering Sciences


NorNickel’s Polar Division, Norilsk, Russia:

S. Yu. Shilenko, Director of Production and Occupational Safety Department


Gipronickel Institute, Saint-Petersburg, Russia:

A. V. Trofimov, Head of Physical and Mechanical Research Center, Candidate of Engineering Sciences,


Gipronickel Institute, Saint-Petersburg, Russia1; Saint-Petersburg Mining University, Saint-Petersburg, Russia2:

A. P. Kirkin1,2, Junior Researcher at Mining Laboratory, Post-Graduate Student


Talnakh and Oktyabrsky ore fields are estimated as rockburst-hazardous starting from the depth of 700 m downward according to safety rules. This means that mining is only permitted within certain protected zones. At the present times, such protected zones are generated in underground mines by means of the large-diameter destressing drilling. Despite proved efficiency, the high cost and large amount of the destressing drilling are the grave faults of this approach. Aiming to save drilling cost, it is proposed to make rock mass rockburst-unhazardous using destress blasting. This article gives a brief description of the destress blasting mechanism. This method has been effectively used in relaxation of pillars from stresses before extraction of the reserves from the pillars both in Russia and abroad. In Oktyabrsky Mine stress relaxation of pillars was implemented by slotting, and the drilling and blasting data were available. This study proposes to destress rock masses by means of directional destress fracturing in horizontal plane through blasting of decked charges of special design. The initial parameters for destress blasting using holes with diameters of 76 and 130 mm are determined. The charge design aimed to ensure a zone of fractures in the horizontal plane, at minimized vertical fracturing is described. This information can be used in planning of full-scale tests to refine parameters and application ranges of the method. For the full-scale tests, it is suggested to undertake destress blasting at different blast patterns on different test sites, and to compare the results with the current destressing method (destressing drilling). Efficiency can be proved using geomechanical and geophysical methods.
The authors appreciate participation of V. P. Marysyuk and T. P. Darbinyan from NorNickel’s Polar Division in this study.

keywords Mine, destressing, antirockburst hazard activities, protected zone, rock burst, confined blasting, full-scale tests

1. Sergunin M. P., Alborov A. E., Andreev A. A., Buslova M. A. Stress assessment ahead of stoping front with widening stress relief zone – A case study of the Oktyabrsky and Talnakh deposits. Gornyi Zhurnal. 2020. No. 6. pp. 38–41. DOI: 10.17580/gzh.2020.06.06
2. Gorpinchenko V. A., Saznov V. V., Andreev A. A., Vilchinskiy V. B. Procedure for determining efficient parameters of relief holes for safe destressing of rockburst-hazardous rock masses in the Norilsk Industrial Area. Gornyi Zhurnal. 2015. No. 6. pp. 68–73. DOI: 10.17580/gzh.2015.06.14
3. Tyupin V. N. Estimation of critical depth of deposits by rock bump hazard condition. Journal of Mining Institute. 2019. Vol. 236. pp. 167–171.
4. Kutuzov B. N., Tyupin V. N. Unloading of rockburst-hazardous interchamber pillars at active faults by blast energy. Gornyi Zhurnal. 2018. No. 1. pp. 54–57. DOI: 10.17580/gzh.2018.01.09
5. Makarov A. B. Practical geomechanics : Mining engineers’ manual. Moscow : Gornaya kniga, 2006. 380 p.
6. Saharan M. R., Mitri H. S. Destress Blasting as a Mines Safety Tool: Some Fundamental Challenges for Successful Applications. Procedia Engineering. 2011. Vol. 26. pp. 37–47.
7. Blake W. Rock-burst mechanics. Quarterly of the Colorado School of Mines. 1972. Vol. 67, No. 1.
8. Hedley D. G. F. Rockburst Handbook for Ontario Hardrock Mines : CANMET Special Report SP92-1E. Ottawa : Canada Communication Group, 1992. 305 p.
9. Andrieux P. P., Brummer R. K., Qian Liu, Simser B. P., Mortazavi A. Large-scale panel destress blast at Brunswick mine. CIM Bulletin. 2003. Vol. 96, No. 1075. pp. 78–87.
10. Vennes I., Mitri H. Geomechanical effects of stress shadow created by large-scale destress blasting. Journal of Rock Mechanics and Geotechnical Engineering. 2017. Vol. 9, Iss. 6. pp. 1085–1093.
11. Vennes I., Mitri H., Chinnasane D. R., Yao M. Large-scale destress blasting for s eismicity control in hard rock mines: A case study. International Journal of Mining Science and Technology. 2020. Vol. 30, Iss. 2. pp. 141–149.
12. Mitri H. S. Destress Blasting – From Theory to Practice. Proceedings of the 4th World Congress on Mechanical, Chemical, and Material Engineering. Madrid, 2018. DOI: 10.11159/mmme18.2
13. Rylnikova M. V., Eremenko V. A., Esina E. N. Destressing of rockburst-hazardous and damaged zones. GIAB. 2014. No. 12. pp. 32–39.
14. Azarkovich A. E., Shuyfer M. I., Tikhomirov A. P. Blasting nearby guarded objects. Moscow : Nedra, 1984. 213 p.
15. Cadastre of physical and mechanical properties of rocks at the mineral deposits in the Norilsk Industrial District. Saint-Petersburg : Gipronickel Institute, 2018.
16. Sidorov D. V., Potapchuk M. I., Sidlyar A. V., Kursakin G. A. Assessment of rock-burst hazard in deep layer mining at Nikolayevskoye field. Journal of Mining Institute. 2019. Vol. 238. pp. 392–398.
17. Sidorov D. V., Potapchuk M. I., Sidlyar A. V. Forecasting rock burst hazard of tectonically disturbed ore massif at the deep horizons of Nikolaevskoe polymetallic deposit. Journal of Mining Institute. 2018. Vol. 234. pp. 604–611.
18. Gray I. Effective stress in rock. Proceedings of the Eighth International Conference on Deep and High Stress Mining. Perth : Australian Centre for Geomechanics, 2017. pp. 199–207.
19. Gray I. Stress in the ground. Drilling for geology II extended abstracts : Bulletin No. 64. Brisbane : Australian Institute of Geoscientists, 2017. pp. 157–175.

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