National Mineral Resources University University of Mines

Saint Petersburg, Russia

National Mineral Resources University University of Mines

Saint Petersburg, Russia

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Alekseenko V.,Southern Federal University | Alekseenko A.,National Mineral Resources University University of Mines
Journal of Geochemical Exploration | Year: 2014

For the first time the abundances (the average concentrations) of chemical elements are given for the soils of urban landscapes. The figures were established by authors on the base of average concentrations of chemical elements in the soils of more than 300 cities and settlements in Europe, Asia, Africa, Australia, and America. The major part of data (sampling, analyses and their statistical treatment) was obtained directly by authors as a result of special studies conducted for more than 15. years. The concentrations of elements were defined by the spectral, gravimetric, neutron activation and the X-ray fluorescence methods of analyses. The control of sampling and also inner and outer laboratory controls of analyses were carried out. The ordinary and the control analyses were carried out in the certified and accredited laboratories, including arbitration laboratory. The sufficiently numerous published materials of different researchers were also used. © 2014 Elsevier B.V.


Shishlyannikov D.I.,Perm National Research Polytechnic Institute | Vasilyeva M.A.,National Mineral resources University University of Mines
Procedia Engineering | Year: 2016

The article presents the results of experimental investigations of the magnitude and nature of change loads drive of mine shuttle car used to deliver ore to extraction chambers in PAO "Uralkaliy" potash mines. The design of recording complex software "VATUR" developed by the staff of the Mining Electrical Engineering department, Perm National Research Polytechnic University, was described. In the course of research of the drive modes of self-propelled mine wagons measurements of instantaneous values of current and voltage motors were carried out. The values of active and apparent power consumed by electric pumping stations and conveyors of mine shuttle car were calculated. Modes and changes in loads on components and parts drives were studied. It was proved that the operation modes of mine shuttle car motors with increased lift capacity are characterized by a systematic overload. Outdated system controlling the rotational speed of shafts drive motor gives rise to considerable dynamic loads on components of mechanical transmissions for shuttle cars. Significant loss of time causing the reduction in technical performance longwall set of equipment of potash mines arises during the maneuvering operations and unloading ore from shuttle cars. Based on the analysis of load drive graphs and emergency failure statistics the technical solutions were justified to improve the reliability of mine shuttle cars. The recommendations to increase the efficiency of transporting potash in the longwall set of equipment, improving maneuverability of self-propelled cars and reduce downtime for unloading are given. © 2016 The Authors.


Mikhail R.,National Mineral Resources University University of Mines | Artem K.,National Mineral Resources University University of Mines
Shiyou Kantan Yu Kaifa/Petroleum Exploration and Development | Year: 2015

Low-permeability inhomogeneous reservoir displacement experiments were conducted using new waterproofing polymer solution GPS-1, and its fluid diversion ability was analyzed. There were three types of displacement experiments (nine experiments in total) in homogeneous cores, inhomogeneous oil-and water-saturated cores. Experimental results show that, compared with the initial polymer solution, the penetrating and water insulating abilities of the GPS-1 improve significantly, the pressure gradient of injection reduces by half, and both the water pressure gradient and the residual resistance factor increase considerably when water-isolating screen destructs. GPS-1 can create a durable waterproofing screen, thus increasing the oil displacement efficiency of water flooding for inhomogeneous layers. The water-isolating ability and oil displacement efficiency is increased greatly by injecting the GPS-1 with fringes of chloride calcium solution. The action selectivity of the GPS-1 is shown not only in formation of the water insulating screen mainly in water-saturated interlayers and effectively blocking high-permeability washed interlayer, but also in acceleration performance for injection wells due to the penetration of more injected water into highly productive intervals. ©, 2015, Shiyou Kantan Yu Kaifa/Petroleum Exploration and Development. All right reserved.


Vasilyeva M.A.,National Mineral resources University University of Mines
Key Engineering Materials | Year: 2016

This paper is devoted to improvement of application of a peristaltic transport of heavy high-viscosity materials using magnetically active material. The main problems that arise when pumping these substances are associated with their low mobility and high shear stress. In various countries of the world peristaltic pumps are increasingly used for this purpose. A fundamentally new approach to transportation of liquid and viscous media consists in using magnetic pumps. Heavy oil and highly concentrated slurry tailings mineral resources are non-conductive materials, and as a result, require the active inducement effect on the portion of the material of the working chamber of the direct channel. © 2016 Trans Tech Publications, Switzerland.


Vasilyeva M.A.,National mineral resources University University of Mines
Solid State Phenomena | Year: 2016

The article analyzes the promising polymeric materials to be used as a template in the manufacture of magnetoactive elastomers (MAEs). MAEs belong to the group of so-called smart materials; they can be used to creeate new techniques and technologies. MAEs are promising materials used to manufacture the working chamber of pumping units for the implementation of peristaltic movements in highly viscous and highly condensed substances. Environments, which is in contact with an element of MAEs, specifically high viscosity asphaltenic oil, impose substantial restrictions on the choice of the polymer matrix for its production, taking into consideration the influence of the material selected to modify the rheological properties of the resultant material. Studies of fluoropolymers basic properties have been conducted. According to their results it is concluded that fluorine-containing polymers can be used as the polymer matrix to manufacture MAEs in contact with aggressive high viscosity substances. © 2016 Trans Tech Publications, Switzerland.


Dolgiy I.E.,National Mineral Resources University University of Mines
Neftyanoe khozyaystvo - Oil Industry | Year: 2015

Exploitation of high viscous oil deposits requires specific technical and economical solution of oil extraction. Based on the analysis of current practice of high viscous oil extraction in Yaregskoye oil-titan deposit, the author suggested a system of preparation and exploitation of oil deposit by thermo-mining method. Parameters of suggested system and sequence of its realization was justified. The method of coupled extraction of oil and titan from the same layer, which is suggested in this work, let to achieve the designed production level of high viscous oils in shorter term, to decrease the duration of oil extraction from the current part of the layer and to pass to extraction of titan-oil ore in shorter time. The coupled method of high viscous oil extraction and titan ore lets to achieve the high level of oil-titan site preparation for further extraction. The method of oil extraction lets to achieve the ratio of oiltitan extraction coefficient to a number of 90 %.


Rogachev M.K.,National Mineral Resources University University of Mines | Kondrashev A.O.,National Mineral Resources University University of Mines
Life Science Journal | Year: 2014

In the article there are presented results of rheological studies of waterproof polymeric compounds at reservoir thermobaric conditions (high pressure and temperature). The carried-out complex of research showed that the addition of nonionic surface-active agent with hydrophobic properties provides improvement of rheological characteristics of the initial polymeric structure (decrease of critical shear stress and effective viscosity), and this action will remain at reservoir conditions (with elevated pressure and temperature). The developed polymeric compound is brought to industrial production and it is recommended to application at oilfields with low-permeable collectors.


Kirsanova N.Y.,National Mineral Resources University University of Mines | Lenkovets O.M.,National Mineral Resources University University of Mines
Life Science Journal | Year: 2014

This article discusses the quality of life in contemporary Russia. It is shown that quality of life is largely determined by social and economic status of monocities. The branch structure of monocities and their contribution to the economy of Russia are presented. The necessity of the division of responsibility between government and business for the results and condition of the main enterprise, which determines the quality of life in a monocity, is determined. The basic directions of solutions for monocitie's problems depending on the specialization of the main enterprise are proved.


Brigadnov I.A.,National Mineral Resources University University of Mines
Acta Mechanica | Year: 2015

The boundary value problem of small static deformation range is formulated as the variational problem for the displacement. The general local conditions of convexity and rank-one-convexity are obtained for smooth elastic–plastic potentials depending on two first convex invariants of the Cauchy strain tensor. It is demonstrated that all types of convexity are equivalent for the Hencky elastic–plastic potential, but, for example, the strain energy function of continuum fracture can have every type of convexity for different relationships between material parameters. The classical regularization method is applied for the construction of the lower convex envelope of the Hencky strain energy potential for the experimental non-monotonic stress–strain relation with falling part. For this relation, the concept of the Maxwell line is used by analogy with the Van der Waals’ gas theory. The results of 1-D and 2-D numerical examples show that this regularization is principally necessary for the convergence of the finite-difference methods that are usually used for numerical computation within the framework of the small deformation models with non-monotonic stress–strain relations. © 2015, Springer-Verlag Wien.


Brigadnov I.A.,National Mineral Resources University University of Mines
Acta Mechanica | Year: 2015

The boundary value problem of torsion of a solid cylinder is analyzed for a class of hyperelastic materials that exhibit the power law type dependence of the strain energy density on the magnitude of the deformation gradient. The Saint Venant hypotheses are generalized by including the non-homogeneous longitudinal and radial deformations. A nonlinear variational problem with respect to the function of the radial/surface deformation, the function of the longitudinal deformation, the normalized torque and the normalized axial force is formulated. The asymptotic analytical solutions are obtained for the hard device torsion and for large angles of twist. They illustrate the power law type dependencies of the axial force and the reaction torque on the angle of twist with the exponents p and p−1, respectively. For Treloar (neo-Hookean) materials with p = 2, the classical results can be obtained. The finite element analysis of the hard device torsion is performed by MATLAB. The results indicate that for a homogeneous class of materials and large angles of twist non-homogeneous radial/surface deformation can be observed. © 2014, Springer-Verlag Wien.

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