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ArticleName Pilot testing of pretension rock bolting technology in Oktyabrsky Mine
DOI 10.17580/gzh.2024.03.08
ArticleAuthor Ustinov A. K., Ksenafontov A. N., Tatsienko V. P., Tsarev D. V.

NorNickel’s Polar Division, Norilsk, Russia

A. K. Ustinov, Head of Mining Technology Improvement Department, Center for Geodynamic Safety
A. N. Ksenafontov, Mining Engineering Manager, Center for Mining Planning, Management and Control, Oktyabrsky Mine


Gorbachev Kuzbass State Technical University, Kemerovo, Russia
V. P. Tatsienko, Professor, Doctor of Engineering Sciences,
D. V. Tsarev, Researcher, Institute of Industrial and Environmental Safety


In the world practice, pretension bolting is an efficient and reliable method of mine support. This method is used in anchorage of strong rock masses, in slope reinforcement and in soil stabilization, and in other engineering solutions. Pretension of cable bolts ensures their increased load-bearing capacity. The review of the current foreign design procedures for the pretension rock bolting shows that in the same geological conditions, the proposed rock bolting technology enables decreasing the bolt length and density by up to 30 % and 20 %, respectively. The mineral mining specialists of NorNickel’s Polar Division considered the offer by the Institute of Industrial and Environmental Safety of the Gorbachev Kuzbass State Technical University on the pretension rock bolting technology testing as deep-level installation of rock bolts is performed currently without their pretension. Such tests were earlier carried out in mines in Kuzbass. For the tests in mines of NorNickel’s Polar Division, a program–procedure of the pilot pretension bolting technology was duly elaborated, coordinated and approved. The pilot tests were successfully implemented in Oktyabrsky Mine, and the high technical level of the tests was emphasized. The testing program is accomplished in full, and the results allow recommending the pretension bolting technology for large-scale application in mines of NorNickel’s Polar Division.
The authors appreciate participation of specialists of NorNickel’s Polar Division in this study, namely, I. V. Kopranov, Department of Mining Safety, O. P. Lyashenko, V. I. Savelkov and V. A. Gorpinchenko, Center for Geodynamic Safety.

keywords Rock bolting, deep-seated bolt, underground opening, load-bearing capacity, bolt pretension, bolt resistance, rock displacement, underground tests

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