Sergo Ordzhonikidze Russian State Geological Prospecting University, Moscow, Russia:

V. P. Drobadenko, Head of Chair, Professor, Doctor of Engineering Sciences, drobadenko@mail.ru
N. N. Klochkov, Dean of School of Exploration and Mining Technologies, Candidate of Engineering Sciences
Zh. V. Bunin, Professor, Doctor of Engineering Sciences
A. L. Vilmis, Associate Professor, Candidate of Engineering Sciences

The Chair undertakes research activities in such areas as:
– improving efficiency of development of continental and marine sedimentary deposits;
– advancing hybrid ore mining technologies;
– expansion of hydraulic mining at placers;
– validation of stability parameters for underground openings with regard to ground surface relief;
– intensification of processes within physicochemical geotechnologies.
Based on the new scientific concept—hydrodynamics of coaxially twisted jets (artificial waterspout phenomenon)—aimed to intensify mass-exchange processes, the Chair research team has designed various modifications of feeding machines. The latter are basically advantageous for: generation and long-distance feed of high-concentration two-phase mixtures; elimination of abrasive wear of movable parts of transport facilities; considerable reduction in energy consumption of production process. The semi-commercial tests of the machines in hydraulic transport and lift of minerals in the land and marine environment in Russia and abroad proved high efficiency and applicability of the machines in various industrial branches. At the present times, the experts of the Chair focus on the increase in efficiency of hydraulic mining systems and improvement of their operating regimes.
The authors appreciate participation of Professors Yu. A. Borovkov and S. V. Markelov, as well as Associate Professors M. I. Buyanov, O. A. Lukonina and I. S. Kalinin, Sergo Ordzhonikidze Russian State Geological Prospecting University, in this study.

1. Jaćimovski D. R., Garić-Grulović R. V., Grbavčić Ž. B., Đuriš M. M., Bošković-Vragolović N. M. Analogija prenosa količine kretanja, toplote i mase pri vertikalnom hidrauličkom transportu inertnih čestica. Hemijska Industrija. 2014. Vol. 68, Iss. 1. pp. 15–25.
2. Vlasak P., Kysela B., Chara Z. Fully Stratified Particle-Laden Flow in Horizontal Circular Pipe. Particulate Science and Technology. 2014. Vol. 32, No. 2. pp. 179–182.
3. Aleksandrov V. I., Vasilyeva M. A., Pomeranets I. B. Estimation of efficiency of hydrotransport pipelines polyurethane coating application in comparison with steel pipelines. IOP Conference Series: Earth and Environmental Science. 2017. Vol. 87. DOI: 10.1088/1755-1315/87/2/022001
4. Furlan J. M., Visintainer R. J. Centrifugal pump performance when handling highly non-Newtonian clays and tailings slurries. Proceedings of the 19^th International Conference on Hydrotransport. Golden, 2014. pp. 117–130.
5. Drobadenko V. P., Lukonina O. A., Vilmis A. L. Coaxial swirling jet-based multifunctional installation for modeling new hydrotransport-hoisting technologies. Gornyy informatsionno-analiticheskiy byulleten. 2013. No. 3. pp. 297–301.
6. Drobadenko V. P., Malukhin N. G., Lukonina O. A., Vil’mis A. L., Rebrikov D. N., Kozlov M. J. Method of conducting mass-transfer processes and apparatus therefor. Patent RF, No. 2558594. Applied: 04.08.2014. Published: 10.08.2015. Bulletin No. 22.
7. Verichev S., Drobadenko V., Malukhin N., Vilmis A., Lucieer P., Heeren J., van Doesburg B. Assessment of Different Technologies for Vertical Hydraulic Transport in Deep Sea Mining Applications. Proceedings of the 31^st International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2012). Rio de Janeiro, 2012. Vol. 3. Pipeline and Riser Technology. pp. 137–144.
8. Britan I. V., Leizerovich S. G. Prospects for borehole geotechnologies in mineral mining in the Belgorod Region. Gornyi Zhurnal. 2014. No. 8. pp. 49–53.
9. Malukhin N. G., Kudryashov R. V. Substantiation of efficiency of processes suctions for hydraulic borehole mining. Bulletin of Russian Academy of Natural Sciences. 2013. No. 6-1. pp. 53–56.
10. Samal A. S., Antsiferov S. V., Deev P. V., Sergeev S. V. Estimate of rock mass stability in surfaceborehole mining of high-grade iron ore. Fundamentalnye i prikladnye voprosy gornykh nauk. 2016. Vol. 3, No. 1. pp. 176–179.
11. Khrulev A. S. Well-drilling hydraulic technology. Issues and options. Bulletin of Russian Academy of Natural Sciences. 2013. No. 5. pp. 51–54. DOI: 10.1088/1755-1315/43/1/012049e
12. Dhawan N., Safarzadeh M. S., Miller J. D., Moats M. S., Rajamani R. K. Crushed ore agglomeration and its control for heap leach operations. Minerals Engineering. 2013. Vol. 41. pp. 53–70.
13. Karev V. I., Kovalenko Yu. F. Well stimulation on the basis of preliminary triaxial tests of reservoir rock. Rock Mechanics for Resources, Energy and Environment : Proceedings of EUROCK 2013 – The 2013 ISRM International Symposium. Leiden : CRC Press/Balkema, 2013. pp. 935–940.