Institute of Integrated Mineral Development – IPKON, Russian Academy of Sciences, Moscow, Russia

M. V. Rylnikova, Head of Department, Professor, Doctor of Engineering Sciences, rylnikova@mail.ru

UGC Gold Mining Company, Chelyabinsk, Russia
K. I. Strukov, Founder and President, Candidate of Engineering Sciences, information@ugold.ru

Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia
V. V. Olizarenko, Associate Professor, Candidate of Engineering Sciences

LLC “UralEnergoResurs”, Magnitogorsk, Russia
I. S. Turkin, Chief Mechanical Engineer, Candidate of Engineering Sciences

The participation of renewable sources in the overall structure of energy resources is one of the key indications of progressiveness of an economy. In respect that the mining industry is the largest energy consumer in any country of the world, the authors analyze the application prospects and the parameters of energyefficient geotechnologies in integrated mineral mining. It is found that in the course of geotechnological transformation of the subsoil, it is possible to compensate mining-consumed energy by means of its reproduction. It is proved that the highest potential of energy reproduction belongs to the downward hydraulic mixture gravity flows that circulate all-year-round and are represented by contaminated drainage water with the increased content of solid as well as by cemented and hydraulic backfill mixtures manufactured from ore mining and processing waste. Advancement in the renewable power generation in mining is connected with the introduction of low-capacity hydroelectric installations (HEI) with the parameters governed by mining conditions, inflow of water to levels in surface and underground mines and by spacing of sublevels and levels of water bypass. The article shows that water handling flows are the year-round source for renewable energy production using mine facilities. The authors propose a circuit of cascade energy intake from slurry flows at intermediate levels and offer a mine flow intensity evaluation procedure that has been used to plot nomograms to determine generating capacity of HEI and to select low-capacity HEI based on the parameters of areas of operation of axial bulb and rotary HEI. With an intent to produce energy from slurry flows, layouts are designed for the current models of HEI equipped with the low-capacity power generators (to 100 kW) with blade, bucket and longitudinally rotating impellers, the related laboratory tests are carried out and the empirical relationships between the recovered energy and the slurry flows are plotted. The output, performance and operating conditions are evaluated for each turbine in the course of recovery of energy from slurry flows of diff erent viscosity, with the varied solid/liquid ratios, depending on the slurry flow head, infeed angle and the turbine location in a mine.
The studies are carried out under budgetary funding of IPKON RAS, Topic No. 0138-2014-0001.

1. Trubetskoy K. N., Kaplunov D. R., Rylnikova M. V. Principles of substantiation of parameters of stable and ecologically balanced mastering of solid mineral deposits. Conditions of stable functioning of mineral raw-material complex of Russia. Moscow : Gornaya kniga, 2014. Iss. 2. pp. 3–10.
2. Tinti F., Boldini D., Ferrari M., Lanconelli M., Kasmaee S. et al. Exploitation of geothermal energy using tunnel lining technology in a mountain environment. A feasibility study for the Brenner Base tunnel – BBT. Tunnelling and Underground Space Technology. 2017. Vol. 70. pp. 182–203.
3. Ghoreishi-Madiseh S. A., Hassani F. P., Abbasy F. Development of a novel technique for geothermal energy extraction from backfilled mine stopes. The 11^th International Symposium on Mining with Backfill. Perth : Australian Centre for Geomechanics PP, 2014. pp. 61–72.
4. Rodríguez R., Díaz M. B. Analysis of the utilization of mine galleries as geothermal heat exchangers by means a semi-empirical prediction method. Renewable Energy. 2009. Vol. 34, No. 7. pp. 1716–1725.
5. Malolepszy Z. Modelling of geothermal resources within abandoned coal mines. Upper Silesia, Poland : Geothermal Training Programme. Grensásvegur, 1998. Report 8. pp. 217–238. Available at: http://www.os.is/gogn/unu-gtp-report/UNU-GTP-1998-08.pdf (accessed: 15.04.2017).
6. Bertani R. Geothermal power generation in the world 2005–2010 update report. Geothermics. 2012. Vol. 41. pp. 1–29.
7. Kaplunov D. R., Rylnikova M. V., Radchenko D. N. Utilization of renewable energy sources in hard mineral mining. Fiziko-tekhnicheskie problemy razrabotki poleznykh iskopaemykh. 2015. No. 1. pp. 88–96.
8. Kaplunov D. R., Leyzerovich S. G., Tomaev V. K. Formation of energy during the underground stowing operations. Gornyi Zhurnal. 2013. No. 4. pp. 62–66.
9. Renewable energy sources: about the industry. Ministry of Energy of Russian Federation. Available at: https://minenergo.gov.ru/node/489 (accessed: 15.04.2017).
10. Popel O. S. Renewable energy sources in the regions of Russian Federation: problems and prospects. EnergoSovet. 2011. No. 5. pp. 22–26. Available at: http://www.energosovet.ru/bul_stat.php?idd=210 (accessed: 15.04.2017).
11. Ivanov V. M., Yurenkov V. N., Ivanova T. Yu., Zhdanov E. P., Kleyn G. O. About the method of calculation of a flow part of axial hydraulic turbines of low-power hydro-energetic units. Polzunovskiy vestnik. 2010. No. 4/2. pp. 61–69.
12. Olizarenko V. V., Mingazhev M. M. Mine drainage during the processing of copper-pyritic deposits of the Southern Urals. Magnitogorsk : Izdatelstvo MGTU imeni G. I. Nosova, 2010. 252 p.
13. Saraskin A. V., Gogotin A. A. Technology of backfilling with tailings. Gornyi Zhurnal. 2017. No. 9. pp. 41– 45. DOI: 10.17580/gzh.2017.09.08
14. Cavalcante P. R. B., Palkovits F. Paste fill – a safety solution for pillar mining. Past 2013: proceedings of the 16^th International Seminar on Paste and Thickened Tailings. Perth : Australian Centre for Geomechanics, 2013. pp. 443–456.
15. Rylnikova M. V., Olizarenko V. V., Zubkov A. A., Mikhalchuk A. P. Investigation of processes of electric energy reproduction due to the using of moving masses energy in mining technical system of mine. Combined geotechnology: stable and ecologically balanced mastering of soils : collection of proceedings of the VIII International Conference. Moscow : Izdatelstvo MGTU imeni G. I. Nosova, 2015. pp. 106–107.