Uchaly Mining and Processing Plant, Uchaly, Russia:

I. A. Akhmedyanov, Technical Officer, Candidate of Engineering Sciences
A. Sh. Mannanov, Head of Industrial and Technical Department

Uralmekhanobr, Yekaterinburg, Russia:

A. V. Kotenkov, Deputy Head of Mining Science Department

Technical University, Ural Mining and Metallurgical Company, Verkhnyaya Pyshma, Russia:

A. V. Krasavin, Head of Chair, Candidate of Engineering Sciences, a.krasavin@tu-ugmk.com

The Novo-Uchaly reserves are currently accessed by means of two ramps from the Uchaly pitwall and from the operating level 480 in Uchaly underground mine. By 2027 it is planned to construct the main opening for ore drawing: skip-and-cage shaft 1170 m deep. In order that mining is economically efficient, it is required to develop wider areas concurrently and to increase mine capacity. One of the methods to step up mining at the deposit is the multilayer technology. A layer is understood as a mine field part safe from the influence of mining in the neighbor layers by natural or artificial pillars. Aimed to ensure the Novo-Uchaly mine capacity of 4500 thou t yearly, considering ore body limitedness in the layers, it is accepted to carry out mining operations simultaneously in three layers: Upper, Middle and Lower. The top ore body of the Novo-Uchaly deposit has small area; for this reason, to intensify ore production, it is decided to use bottom-up room-and-pillar system in the Upper layer. The Middle layer is extracted top-down and features the increase in the thickness and strike length of the ore body. The longwall system is applied in this layer. The Lower layer is mined top-down. The occurrence conditions beneath level 970 m change, and the thickness of the ore body is reduced considerably. Accordingly, the Lower layer is extracted using a combination of the longwall and room-and-pillar systems. Longwalling is advanced from the center of the ore body towards its sides. The proposed engineering solutions on the systems and sequences of mining, as well as on ground control make it possible to improve capacity of Novo-Uchaly Mine up to 4.5 Mt/yr owing to the multilayer technology introduction for concurrent extraction of ore reserves in three layers of the deposit.

1. Pirozhok P. I. Texture and zonality of the Novo-Uchaly copper–zinc–sulphide deposit (South Ural). Metallogeny of Old and Modern Oceans–2008. Ore-Bearing Systems and Ore Formations : XIV Scientific Students School Proceedings. Miass, 2008. pp. 90–94.
2. Gibadullin Z. R., Androsenko A. V., Zalyaletdinov E. R., Gerner V. I. Uchalinsky Mining and Processing Integrated Works: 60 years on the way of stability and social responsibility. Gornyi Zhurnal. 2014. No. 7. pp. 5–9.
3. Chadchenko A. V., Pirozhok P. I., Orlov M. P., Kulbakov A. M. Mineral reserves and resources: Current condition and development prospects. Nedropolzovanie-XXI vek. 2009. No. 3. pp. 9–14.
4. Moiseev I. B., Chadchenko A. V., Pirozhok P. I., Kulbakov A. M. Mining of copper–sulphide deposits of Uchaly Mining and Processing Plant: Condition and problems. Metallogeny of Old and Modern Oceans–2008. Ore-Bearing Systems and Ore Formations : XIV Scientific Students School Proceedings. Miass, 2008. pp. 154–156.
5. Medvedev V. V., Pakulov V. V. Improving efficiency of room-and-pillar systems with a backfill in complex environmental conditions. Izvestiya Sibirskogo otdeleniya RAEN. Geologiya, poiski i razvedka rudnykh mestorozhdeniy. 2015. No. 3. pp. 61–67.
6. Kalmykov V. N., Meshcheryakov E. Yu. Geomechanical support of underground mining at Uchaly Mining and Processing Plant. Ratsionalnoe osvoenie nedr. 2010. No. 1. pp. 62–66.
7. Radchenko D. N., Balusov A. S. Effect of ore flow parameters on mining efficiency at the Novo-Uchaly deposit. Hybrid Geotechnology–Intergated Subsoil Development and Preservation : V International Conference Proceedings. Yekaterinburg, 2009. pp. 144–147.
8. O’Sullivan D., Newman A. Extraction and Backfill Scheduling in a Complex Underground Mine. Interfaces. 2014. Vol. 44, No. 2. pp. 204–221.
9. Sheshpari M. A Review of Underground Mine Backfilling Methods with Emphasis on Cemented Paste Backfill. Electronic Journal of Geotechnical Engineering. 2015. Vol. 20, No. 13. pp. 5183–5208.
10. Ghirian A., Fall M. Strength evolution and deformation behaviour of cemented paste backfill at early ages: Effect of curing stress, filling strategy and drainage. International Journal of Mining Science and Technology. 2016. Vol. 26, No. 5. pp. 809–817.
11. Walker S. Tools to Assist in Planning and Design. Engineering and Mining Journal. 2013. Vol. 214, No. 1. pp. 34–39.
12. Morton J. Mine Planning Software Empowers Grade Controllers. Engineering and Mining Journal. 2017. Vol. 218, No. 2. pp. 28–33.
13. Vilchinskiy V. B., Trofimov A. V., Koreyvo A. B., Galaov R. B., Marysyuk V. P. Substantiation of reasonability of application of stowing mining systems at Talnakh mines. Tsvetnye Metally. 2014. No. 9. pp. 23–28.
14. Allaberdin A. B. Grounding the parameters of storey- chamber development system with combined stowing employing the ascending order of chalcopyrite deposits mining. Problemy nedropolzovaniya. 2014. No. 2. pp. 74–79.
15. 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
16. Yuan Yao, Zengdi Cui, Ruzhou Wu. Development and Challenges on Mining Backfill Technology. Journal of Materials Science Research. 2012. Vol. 1, No. 4. pp. 73–78.
17. Kazikaev D. M., Savich G. V. Practical course on geomechanics of underground and hybrid hard rock mining : Teaching aid. Moscow : Gornaya kniga, 2012. 224 p.