Journals →  Gornyi Zhurnal →  2020 →  #1 →  Back

ArticleName Risk assessment in main ore chute construction in difficult geological conditions based on integrated geotechnical research
DOI 10.17580/gzh.2020.01.12
ArticleAuthor Marysyuk V. P., Shilenko S. Yu., Trofimov A. V., Kuzmin S. V.

Norilsk Nickel’s Polar Division, Norilsk, Russia:

V. P. Marysyuk, Chief Geotechnologist – Director of Center for Geodynamic Safety, Candidate of Engineering Sciences,
S. Yu. Shilenko, Deputy Director of Mining Practice Department


Gipronikel Institute, Saint-Petersburg, Russia:

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


Norilsk Geologiya, Norilsk, Russia:

S. V. Kuzmin, Leading Geomechanic, Candidate of Engineering Sciences


During operation of long main ore chutes at great depths, in heavily fractured rocks with poor physical and mechanical properties, the sidewalls gradually disintegrate and the ore chutes expand. The resultant void adversely affects stability of permanent underground excavations nearby. Disintegration of sidewalls worsens performance of ore chutes and increases technological hazards. Such situations can reduce mining safety and economic efficiency. The cause of the sidewall disintegration in ore chutes is the multi-factor synergetic impact exerted by geological conditions, stress–strain behavior of rock mass, operating mode, size and shape of an ore chute, grain size composition of ore, ore flow hanging ability and its recoverability methods, as well as design of the sidewall support. The problem of destruction in ore chutes subjected to highly intensive operation exists worldwide, especially in deep mines, which explains the comprehensive studies in this field, based on the empirical approaches as a rule. In the meanwhile, irrespective of the stability prediction or estimation method applied, the decision-making on the construction sites for such critical mine objects as main ore chutes should be based on the integrated geotechnical research of rock mass, which can reduce potential risk of uncontrolled processes. This study estimated alternative locations of a new ore chute using an integrated approach, including physical and mechanical properties of enclosing rock mass, based on tests of cores from geotechnical holes drilled on the would-be ore chute construction site, and concurrent geotechnical description of the core, which allowed stability analysis using the rock mass rating systems.
The authors appreciate participation of A. E. Rumyantsev, T. K. Burdukov, A. V. Fedoseev, K. E. Breus and A. P. Kirkin in this study.

keywords Physical and mechanical properties, mining operations, rocks, core sampling, geotechnical description, Barton, McCracken, Stacey, ore chute stability, rock mass rating

1. Shaterpour-Mamaghani A., Erdogan T. Stability analysis of raise bored shaft in Balya Mine, Turkey. Rock Mechanics and Rock Engineering: From the Past to the Future : International Symposium of the International Society for Rock Mechanics. Boca Raton : CRC Press, 2016. Vol. 1.
2. Andersen N. Pre-sink shaft safety analysis using wireline geophysics. The Journal of the Southern African Institute of Mining and Metallurgy. 2015. Vol. 115, Iss. 5. pp. 435–439.
3. Ilyasov B. T. Modelling of long destruction of massifs of rocks by method of final and discrete elements. Marksheyderskiy vestnik. 2016. No. 1. pp. 48–51.
4. Ilyasov B. T. Determination and verification of physicomechanical parameters of model for calculations of method of final and discrete elements (MFDE). Marksheyderskiy vestnik. 2016. No. 2. pp. 44–48.
5. STO UKK GRR-16–2018. Detailed geotechnical core description. Saint-Petersburg, 2018.
6. Read J., Stacey P. Guidelines for open pit slope design. Collingwood : CSIRO Publishing, 2009. 487 p.
7. Trofimov A. V., Vilchinskaya O. V., Breus K. E., Amosov I. V. Comprehensive study of physical and mechanical properties of rocks by modern methods and means for optimisation of mining and metallurgical operations. Tsvetnye Metally. 2014. No. 9. pp. 16–23.
8. Barton N., Grimstad E. Forty years with the Q-system in Norway and abroad. Bergmekanikk. Geoteknikk. Trondheim, 2014.
9. Eremenko V. A., Aynbinder I. I., Patskevich P. G., Babkin E. A. Assessment of the state of rocks in underground mines at the Polar Division of Norilsk Nickel. GIAB. 2017. No. 1. pp. 5–17.
10. Morozov E. M., Levin V. A., Vershinin A. V. Strength analysis. Fidesys in engineer’s hand. Moscow : Lenand, 2015. 408 p.
11. Sonnov M. A., Rumyantsev A. E., Trofimov A. V., Vilchitskiy V. B., Kirkin A. P., Bazhenova A. V. Selection of the location for ore pass construction on the basis of finiteAelement modeling with the use of CAE Fidesys software suite. Gornaya promyshlennost. 2019. No. 1. pp. 56–59.
12. McCracken A., Stacey T. R. Geotechnical risk assessment for large-diameter raise-bored shafts. Shaft Engineering : Conference. London : Institution of Mining and Metallurgy, 1989. pp. 322–331.
13. Peck W. A., Coombes B., Lee M. F. Fine-Tuning Raise Bore Stability Assessments and Risk. Proceedings of the 11th AusIMM Underground Operators’ Conference. Melbourne, 2011. pp. 215–226.
14. Lyle R. R. Considerations for large-diameter raise-boring. Underground Mining Technology : Proceedings of the First International Conference. Perth : Australian Centre for Geomechanics, 2017. pp. 581–595.

Language of full-text russian
Full content Buy