Saint Petersburg State Mining Institute

Saint Petersburg, Russia

Saint Petersburg State Mining Institute

Saint Petersburg, Russia
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Ermolin E.,Saint Petersburg State Mining Institute | Ingerov O.,Phoenix Geophysics Ltd.
73rd European Association of Geoscientists and Engineers Conference and Exhibition 2011: Unconventional Resources and the Role of Technology. Incorporating SPE EUROPEC 2011 | Year: 2011

There is unique geological structure in the Earth, situated at far mountain area covered by heavy bush at East Siberia. The name of this geological structure is Patomsky Crater, which has been discovered during routine geological survey in 1949 by Russian geologist V.V. Kolpakov. Patomsky Crater is situated about 200 km to northeast from Baikal Lake at east part of Irkutsk region. Since it discovery three geological expeditions in 2005-2008 were curried out to discover the nature of the crater. As only helicopter is the available transport to this area application of geophysical equipment was very limited. Fourth expedition carried out in august 2010 has 7 sets of AMT equipment, enough to provide in short time AMT profile, which crosses the Patomsky Crater in the direction orthogonal to the structure of hosting Proterozoic rocks. 2-D inversion of TE and TM curves as well as tipper data has been done. AMT data show the Craters body has high resistivity at upper several hundred meters depth. This body breaks metamorphosed and folded Proterozoic host rocks. The tipper and real induction vectors data were very useful to determine complicate 3-D structure of area.

Demchenko N.P.,Ukhta State Technical University | Krapivsky E.I.,Saint Petersburg State Mining Institute
4th International Conference and Exhibition: New Discoveries through Integration of Geosciences, Saint Petersburg 2010 | Year: 2010

Plenty theoretical and experimental researches (lab and field) of the fields of main pipeline have been done. These researches allowed us to work out and scientifically prove the methods of the geophysical monitoring of technical state of underground pipelines. The forecast of probability of corrosion is carried out with the help of the expert-analytical system, which is based on the following factors: pipeline damage reasons; hypotheses about corrosion reasons; analysis of electromagnetic fields; experience estimates of the probability of each factor influencing pipe corrosion. The model contains the database, knowledge base, mathematical block of interpretation of the data and simulation modeling and more than 250 rules. It operates on 15 factors, which one exercise influence on corrosion. The inference is made up on the basis of researches by the complex of geophysical methods. The conclusion Features of the designed hardware - methodical complex - high efficiency, possibility of year-round operation under any conditions of ground connections, low cost. It can precede usage of expensive methods of a defectoscopy. The facilities - methodical complex has passed trace trials on mains of Russia.

Nenasheva E.A.,GIRICOND Research Institute | Kartenko N.F.,RAS Ioffe Physical - Technical Institute | Gaidamaka I.M.,Saint Petersburg State Mining Institute | Trubitsyna O.N.,Ceramics Co.Ltd | And 3 more authors.
Journal of the European Ceramic Society | Year: 2010

In this paper we report the influence of the composition and concentration of Mg-containing additions such as Mg2TiO4, MgO and a mixture of Mg2TiO4-MgO on ceramics based on a mixture of BaTiO3/SrTiO3. Phase relations, crystal structure, microstructures, microwave dielectric properties (ε, tan δ) and DC tunability have been studied over a wide range of frequencies. The temperature dependence of the dielectric properties has been measured as well. Among the compositions synthesized were low loss bulk ferroelectrics with dielectric constants in the range 150-800 and relatively high DC tunabilities (up to 1.49 under a DC electric field of 40 kV/cm). These materials can be used for high power tunable microwave devices. © 2009 Elsevier Ltd.

Marin Y.B.,Saint Petersburg State Mining Institute | Skublov G.T.,Saint Petersburg State Mining Institute | Yushkin N.P.,Russian Academy of Sciences
Doklady Earth Sciences | Year: 2010

On the right-hand bank of the Volkhov River, in the natural area of tektite-like glasses (Volkhovites), fragments of shungites and slags with bunches of hairlike dark brownish enclosures were found. The filament thickness ranged from 20 to 100 μm, and separate "hairlines" were 3 cm in length. The composition of shungites and "hairlines" was found to be identical, which allowed us to consider the latter as aposhungite carbon formations. The high-carbon hairline structures associated with volkhovites are called kirishites. Kirishites are a new type of high-carbon structures that formed simultaneously with volkhovites in the case of explosion-type delivery of carbon slag and shungite fragments to the daylight surface during Holocene explosive activity. Under sharply reductive conditions, the slags partially melted, the melts were segregated, and carbonaceous-silicate and carbonaceous-ferriferous glasses formed with subsequent decompression-explosive liberation of carbon-supersaturated structures, which were extruded from shungite and slag fragments in the form of a resinoid mass. The "hairlines" were found to be zonal in structure: the central axial zones are composed of high-nitrogen hydrocarbon compounds, and peripheral regions are essentially carbonaceous with a high content of organic-mineral compounds and numerous microanomalies of petrogenic, volatile, rare, and ore elements. Infrared spectroscopy identified in kirishites proteinlike compounds, diagnosed in absorption bands (in cm-1) 600-720 (Amid V), 1200-1300 (Amid III), 1480-1590 (Amid II), 1600-1700 (Amid I), 3000-3800 (vibrations in NH2 and II groups). Gas chromatography, with the possibility of differentiation of left- and right-handed forms, revealed a broad spectrum of amino acids in kirishites, with their total content found to be the absolutely highest record for natural bitumens, an order of magnitude higher than the largest amino acid concentrations ever revealed in fibrous high-structured kerite crystals from Volyn pegmatites and in Transbaikalia phyto fulgurates. Like in phytofulgurites and fibrous kerites, in kirishites the amino acids are abiogenic, and they are predominately left-handed in configuration, contrary to the commonly accepted view about the exclusively biological nature of left-handed amino acids and their natural abiological thermofusion. Kirishites can be considered as models of prebiotic systems, predecessors of the simplest living organisms. This process could be favored by extreme conditions with rapid variations of temperature and pressure. Further study of kirishites and construction of a kirishite formation model will also be useful for development of the conception of endogenous ore-naphtobiogenesis. © 2010 Pleiades Publishing, Ltd.

Kadyrov E.D.,Saint Petersburg State Mining Institute | Danilova N.V.,Saint Petersburg State Mining Institute
Automation and Remote Control | Year: 2013

Variables of an autogeneous process are described. The suggested processing technique for experimental data gives a practical interpretation to the obtained results. Finally, a method of defining probabilistic relationships between different variables of the object is proposed. © 2013 Pleiades Publishing, Ltd.

Lazarenkov V.G.,Saint Petersburg State Mining Institute
Russian Geology and Geophysics | Year: 2010

Series of continental and oceanic alkaline associations have been compared. Comparison confirms that alkaline plumes originated from the Earth's liquid core under the continents and, less often, under the oceans. The spatial distribution of alkaline complexes has been analyzed in terms of the plume magmatism theory. Analysis suggests that the zoning and lateral migration of alkaline magmatic centers in alkaline provinces were determined by the migration of an alkaline plume (multiplume) and its alkaline basaltic, alkaline ultramafic, carbonatitic, kimberlitic, and other derivates. Two components are well pronounced in the chemical history of alkaline plume magmatism. The first is the foidaphile component, which persists in all igneous and metasomatic rocks of various alkaline complexes. It includes elements associated with Na and K: rare alkali metals, alkaline earth metals, radioactive elements, rare earths, and others. They make up the important part of the plume that might have separated from the liquid core. The second component is rock-forming mantle-lithospheric, which formed in the asthenosphere during the mixing of mantle and lithospheric sources while the plume ascended to the Earth's surface. © 2010.

Smirnov O.,Saint Petersburg State Mining Institute
Saint Petersburg 2012 - Geosciences: Making the Most of the Earth's Resources | Year: 2012

The hypothesis of Podvodnikov basin's riftogenic origin is based on idea of continental type of crust in this region, which has become very popular in recent years. A seismic survey had been carried out in this region during "Shelf-2011" expedition. The qualitative interpretation of several common-midpoint stacks was done by author. Some features of riftogenic structures are quite visible on seismic sections presented. For velocity analysis a number of reflection-refraction soundings with sonobuoys had been carried out too in above-mentioned expedition. The velocity modeling through primal algorithm based on these sounding's data was performed by author. It shows regular p-wave velocity increase in sediments with depth increase. The velocity for acoustic basement upper boundary turned out to be 5.8 km/s, which is typical for consolidated crust.

Belyaev V.L.,Saint Petersburg State Mining Institute | Kuklev Yu.V.,Saint Petersburg State Mining Institute | Shalaginov A.A.,Saint Petersburg State Mining Institute
Russian Electrical Engineering | Year: 2014

The design procedure of full transitive resistance of an idealized electrolyzers' high-current contact system in view of the curvature of lines of a current and thermal resistance is carried out. The procedure allows calculating the full transitive resistance in view of various parameters of diverse conductor materials to properly pick up various materials and minimize electric losses at contact connections. © 2014 Allerton Press, Inc.

Abramovich B.N.,Saint Petersburg State Mining Institute | Ustinov D.A.,Saint Petersburg State Mining Institute | Poljakov V.E.,Saint Petersburg State Mining Institute
Neftyanoe Khozyaistvo - Oil Industry | Year: 2010

Questions of definition boundary steady operation of electrocentrifugal pumps (EPI) are considered. Results of researches dynamic stability EPI, with usage model made on the basis of the equations, describing electromagnetic and electromechanical processes in underground electric motor are resulted. The dependences are revealed, allowing to define maximum permissible depth of failures of power In system of electrical supply EPI and power on an output of uninterruptible power supplies at which dynamic stability of technological process is provided.

Telegin A.N.,Saint Petersburg State Mining Institute
4th International Conference and Exhibition: New Discoveries through Integration of Geosciences, Saint Petersburg 2010 | Year: 2010

Is considered a choice of optimum parameters of a technique of seismic prospecting by a method of the reflected waves of the received results directed on unequivocal geological interpretation. In particular communication of a kind of shooting (digitization of results on the area of works) with complexity of a relief of geological borders, and parameters seismograms CMP (fold of supervision and offset a sourcereceiver), received in each bin, with complexity of a registered wave picture is defined. Formulas for calculation of concrete parameters of a technique of works are resulted.

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