Institute of Mining, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia:

A. V. Glebov, Deputy Director on Scientific Questions, Candidate of Engineering Sciences, glebov@igduran.ru
A. V. Semenkin, Junior Researcher
G. D. Karmayev, Senior Researcher, Candidate of Engineering Sciences
V. A. Bersenev, Senior Researcher, Candidate of Engineering Sciences

Cyclical-and-continuous technology (CCT) allows saving energy and resources in deep-level mineral mining. In this respect, it is expedient to evaluate rational fields of application of CCT systems in view of a wide variety of geotechnical conditions at mineral deposits, optimal selection of CCT machinery parameters and integrated consideration of the most significant criteria of operational efficiency of the machines. This article describes the research aimed at improvement of the efficiency evaluation procedure for CCT machines towards more accurate calculations of motor-and-conveyor transport parameters and for the determination of its rational use field based on the criterion of the current relative cost per unit. Additional criteria are suggested to be air pollution expenses, specific metal content and energy intake as well as labor productivity. The authors have developed a new layout to arrange equipment in an open pit mine without additional expansion of the pit walls. CCT systems and truck-and-shovel scheme (TSS) are compared. The improved economic-and-mathematical model is used to calculate operating parameters of CCT systems with regard to features of their layout in an open pit mine (including/excluding pit wall expansion cost), and the relations between the change of the evaluation criteria and the height of broken rock hoist (100–600 m) are obtained at different open pit mine capacities (5–30 Mt/yr). It is found how the type of handled material influences the operational costs with CCT and TSS. Based on the obtained results, the preferable fields of CCT application during stripping and actual mining are identified, inclusive/exclusive pit wall expansion cost as against TSS. Despite insignificant difference in costs of actual mining, stripping and haulage (to 5–10 %), CCT application is to a certain degree more preferable.
The studies have been performed in the framework of Project No. 0405-2015-0010: Theoretical Basis for Integrated Mineral Development and Mining Technologies with Regard to Features of Transition Processes in Dynamic Advancement of Geotechnical Systems, under State Contract No. 007-01398-17-00.

1. Kornilkov S. V., Yakovlev V. L. About the methodical approaches to the forecast of technological development in mining branches. Gornyy informatsionnoanaliticheskiy byulleten. Special issue No. 21. Problems of complex mastering of georesources. 2016. pp. 418–433.
2. Kornilkov S. V. 50 years on the service of innovation development of mining. Gornyi Zhurnal. 2012. No. 1. pp. 10–14.
3. Kantemirov V. D. Evaluation of technological equipment efficiency indexes at large iron-ore quarries of Russia. Almanakh sovremennoy nauki i obrazovaniya. 2016. No. 4(106). pp. 53–57.
4. Yakovlev V. L., Yakovlev V. A. The features of methodological approach to the formation of the transport systems for the quarry development of complex fields. Problemy nedropolzovaniya. 2016. No. 1. pp. 65–70. Available at: https://trud.igduran.ru/editions (accessed: 25.04.2017).
5. Kornilkov S. V., Yakovlev V. L. Methodology-based approach to the research in the area of mineral exploration and mining based on systematic, integrated, interdisciplinary and innovation strategy. Gornyi Zhurnal. 2015. No. 1. pp. 4–9. DOI: 10.17580/gzh.2015.01.01
6. Yakovlev V. L. Theory and practice of the choice of transport on deep pits. Novosibirsk : Nauka, 1989. 238 p.
7. Glebov A. V., Kornilkov S. V. Technological audit of truck transport at mining works. Proceedings of the XIIth National Conference with International Participation of the Open and Underwater Mining of Minerals, 26–30 June 2013. Varna : Scientific and Technical Union of Mining, Geology and Metallurgy, 2013. pp. 128–131.
8. Dzakpata I., Knights P., Kizil M. S., Nehring M., Aminossadati S. M. Truck and Shovel Versus In-Pit Conveyor Systems: a Comparison оf the Valuable Operating Time. Coal Operators’ Conference, 10–12 February 2016. Australia : The University of Wollongong. pp. 463–476.
9. Londono J. G., Knights P., Kizil M. Review of in-pit crusher conveyor application. Austrailian Mining Technology Conference, 8–10 October 2012. pp. 63–82.
10. Graber G. Advancement of mobile conveying solutions for IPCC and waste handling operations. International Mining. In-Pit Crusher and Conveying, 13–15 October 2013. Cologne, Germany, 2013.
11. V. A. Bersenev, G. D. Karmaev, Yu. A. Bakhturin, I. G. Sumina. Open pit. Patent RF, No. 2498068. Applied: 22.03.2012. Published: 10.11.2013. Bulletin No. 31.
12. Yakovlev V. L., Karmaev G. D., Bersenev V. A., Glebov A. V., Semenkin A. V., Sumina I. G. Efficiency of cyclical-and-continuous method in open pit mining. Fiziko-tekhnicheskie problemy razrabotki poleznykh iskopaemykh. 2016. No. 1. pp. 100–109.
13. Myaskov A. V., Ilin A. S., Popov S. M. Economical aspects of adaptation of open pit mine performance to fluctuations in the raw materials markets. Gornyi Zhurnal. 2017. No. 2. pp. 51–56.
14. Karmaev G., Glebov A., Bersenyev V., Kulniyaz S. Fundamental statements of selection mechanization structures in cyclic-flow technology. New Developments in Mining Engineering 2015: Theoretical and Practical Solutions of Mineral Resources Mining. London : Taulor and Francis, 2015. pp. 385–391.
15. Kuleshov A. A. Powerful shovel-mobile complexes of open pits. Moscow : Nedra, 1980. 317 p.
16. Trubetskoy K. N. Open pit mining control technologies: state-of-the art and future considerations. Gornyi Zhurnal. 2013. No. 7. pp. 4–6.