Home – Home – Jornals – Humanitarian sciences in Siberia 2022 number

The paper considers the problem of control of movable objects with distrib-uted parameters, optimal according to standard quality criteria, concerning the actual goal of optimization of the operational temperature modes for continuous process instal-lations for preheating semi-finished products before subsequent pressure treatment. The solution to the problem provides the optimal energy consumption distributions of the heat sources' power along over the length of the heater in stationary modes of its operation, which act as the desired design solutions for the installation. Algorithms for automatic programmed and positional control of operational transient modes of a heating installa-tion are proposed that are optimal in terms of a standard quadratic quality criterion under conditions of a given accuracy of uniform approximation of the final spatial temperature distribution to the required one. The procedure for synthesizing an optimal controller is reduced to constructing a control system with linear feedback based on incomplete measurements of the object's state with non-stationary transmission coefficients determined by a preliminary calculation of programmed control.

To solve the problem of compensation of the influence of a perturbation on the angular position of the spacecraft, an engineering technique is proposed for the synthesis of an algorithm for controlling the flywheel orientation and stabilization system, based on ensuring selective invariance of the control system and the anti-accumulation signal scheme. The effectiveness of the method is confirmed by numerical modeling.

To solve the problem of estimating the orientation and position of an aircraft, a system based on series-connected Kalman filters is proposed: a linear Kalman filter in the attitude stabilization loop and an extended Kalman filter in the subsystem of maintaining the target location. The effectiveness of the developed control system is confirmed by experimental results of the quadrocopter indoor flight control.

The problem of monitoring the metal particles of friction pairs’ wear in lubrication systems of power plants is considered. The solution is proposed on the base of a multi-channel cluster eddy current sensor with single-coil sensitive elements. The sensor is installed in the oil pipeline break and provides the identification of ferromagnetic and non-ferromagnetic metal particles, as well as their ranking by several size groups. The features of the conversion of sensing elements’ inductances in differential measuring circuits during the movement of metal particles through the oil channel of the sensor are considered. The effect of the particles’ speed in the oil flow on the result of the conversion of sensor signals is analyzed. The algorithm for recognizing and assigning metal particles to specified size groups is given. Considering the possible effect of the particles’ speed on the result of the conversion of sensor signals, the operational correctness of the algorithm is evaluated.

The problem of estimation of the force loading channel gain of the electrohydraulic strength test bench is considered, in particular, on the basis of the frequency response analysis, the gradient method, the least squares method with sliding window, and the recursive least squares method with forgetting factor and based on the harmonic analysis. The calculation relations of the algorithms for obtaining an estimate of the force loading channel gain are given, the results of implementation of these methods on the experimental bench are presented, and a comparison of the estimates obtained by different methods is performed. As a result of the conducted research, recommendations are given for building an adaptive control system with the force loading channel coefficient identification loop on the aircraft structures strength test stand. The obtained results make it possible to automate the process of regulators’ adjustment for electric hydraulic actuators of the stand and to speed up the process of strength and fatigue strength tests of aircraft structures.

In modern robotics, the questions of local navigation of mobile robots (MRs) providing the purposeful movement of the robot in an environment with obstacles gain all the most urgency. At the same time, the most popular are the methods of local navigation of the MR based on the use of artificial potential fields (PFs) generating virtual forces of "attraction" to the target and "repulsion" from obstacles. However, their application faces the problem of potential pits, which are local "traps" for MRs. The new method of potential guidance of the MR that is based on the concept of a "fairway" and allows one not only to solve the problem of "traps," but also to choose an optimal route of the robot's movements to the target is stated in the paper. The constructive aspects of the "fairway" method are discussed, and a virtual particle method is proposed to find the desired "fairway" on the map of force lines of the PF.

Solving problems of environmental monitoring reasonably requires collecting, digitizing, storing, and analyzing a large amount of spatiotemporal data. Data processing often needs distributed computing. As a rule, there are no means to fully support such computing in the well-known geographic information systems. In the paper, we propose an approach to solving this problem based on integrating a geographic information system with tools for developing and using distributed scientific applications in a heterogeneous computing environment through representing applied software as web data processing services. We show the advantages of the proposed approach in reducing the complexity of preparing and carrying out experiments with geodata.

The problem of improving the synchronization accuracy of three-phase voltages of an autonomous four-wire inverter with a network is considered. Increasing the synchronization accuracy is achieved by applying a proportional-integral-differential (PID) resonant controller. A new structure of the PID resonant controller and a methodology for calculating its parameters are proposed. The peculiarity of the proposed approach consists in the application of the time-scale separation method, which makes it possible to calculate the PID-component of the controller regardless of the choice of the parameters of its resonant components. Application of this approach to the calculation of the controller of autonomous voltage inverters makes it possible to improve electromagnetic compatibility and reduce losses in distributed power generation systems. The results of numerical simulation are presented.

A constructive technology for solving parametrizable problems of two-channel time-optimal boundary control of two physically inhomogeneous objects with distributed parameters described by linear heat conduction equations under conditions of a given accuracy of uniform approximating the resultant spatial distribution of the controlled variable to the desired state is proposed. The two objects are considered under conditions of perfect thermal contact of interacting surfaces. The developed technology uses a special method for describing the studied temperature fields in a form containing uniformly converging series. The developed approach is based on the parametrization procedure of the sought control actions and subsequent reduction to a special form of the task of semi-infinite optimization, which is solved by the scheme of the alternance method proposed earlier with an additional restriction on the same duration of the control process for two control actions.

In this paper, the possibility of stabilizing algorithm application for a linearized system “Double inverted pendulum” by means of the localization method is discussed. In order to reduce the complexity of the controller calculation procedure, a preliminary transformation of the object definition to the canonical basis is provided. Moreover, the control algorithm formulation in the form of a function of the canonical variables is suggested. The controller definition in a primitive basis is obtained via an inverse transformation of the canonical variables. It provides a possibility of issuing recommendations for the physical implementation of the system. In addition, it is needed to estimate the entire list of variables for creating the controller, but only the part of internal variables of the object can be measured. With the purpose of the variables’ estimation, three similar differentiators are proposed, which provides the possibility of estimating the total state vector. The designed controller guarantees the pendulum’s stabilization in a vertical position with a small angle of deviation. The main features of the designed system are shown by simulating the model in the MatLab Simulink integrated environment.

A possibility of using different ways of adjusting parameters of a proportional-integral-differential (PID) regulator in a system with a second-order object with a transport delay is discussed. According to the experimentally obtained acceleration parameter, the transfer function of the object and its parameters are determined, the quality indicators of the transient process are evaluated, and the synthesis task is formulated. Because of a significant delay of the control object, it is planned to investigate some ways of regulator tuning in order to choose the most appropriate one: Ziegler-Nichols’ method (frequency method), Chyn-Chrones-Resvik’s method, Kun’s method (fast adjustment), Stogestad’s method, and method of numerical optimization with various cost functions are investigated in this project. Based on the calculation results, the simulation of synthesized systems in the integrated MatLab Simulink and VisSim environments is performed. A comparison of graphs of transients obtained by using different methods is carried out. It is shown that, among all the approaches studied, only the numerical optimization method allows providing a transient process with desired properties at the output of a closed system.

In a number of systems for non-contact tracking of the gaze direction based on video data generated by a video camera, the gaze direction is determined by the mutual position of the centers of the pupil and the cornea of the eye. In the camera coordinate system, the three-dimensional coordinates of the cornea center can be calculated from the positions of glares created on the cornea surface by point sources of IR radiation rigidly connected to the camera. The paper considers a new method for estimating the three-dimensional coordinates of the cornea center from images of glares, generated by a pair of point radiation sources. It is shown that the problem comes down to solving one nonlinear equation, where the distance between the eye and the camera is much greater than the radius of the cornea. We present an iterative algorithm for estimating the coordinates of the cornea center, which ensures low computational costs. The results of the numerical experiment confirm the preservation of the estimates accuracy.

The article considers a new method for reconstructing images from holograms with high spatial resolution, based on hologram shifts by a value smaller than the aperture size. The method is based on the discretization equation obtained using generalized functions. Mathematical modeling of the process of restoring a high-resolution image from low-resolution holograms is carried out. The proposed method can be used to obtain digital holograms using a photodetector array with a low resolution. The method does not require a direct solution of a system of algebraic equations of high dimension.

V.S. Ikonnikov made a review of the critiques of the apocryphal stories in works by Maximus the Greek. The paper objective is to investigate several texts by Maximus the Greek not included mostly into the author’s codes of the learned monk that expose apocryphal contents of certain narratives. Two writings- miniatures, “An answer about the heaven’s epistle” and “Tale of Jesus Christ’s priesthood”, are the theologian responses regarding apocryphal stories. In the first brief statement, Maximus the Greek simply denies the existence of the epistle granted by God. It is known that the original text of “Tale of Jesus Christ’s priesthood” is on manuscript margins of the mid XVI century kept in the Russian State Library (fond 173/I № 57) as an autograph comment for the apocrypha by Theodosius the Jew. In such a context, the literary monument has been preserved as part of other collections of the XVI-XVII centuries. In his tale, Maximus the Greek made three statements contesting Jesus Christ’s priesthood. “The epistle to a certain man” contains the critique of the collected works “Lucidarius” sent to a certain George and translated from German. The article contains assumptions regarding the addressee’s personality, and details of two versions of the Epistle, the Slavic and Troitsk versions, known as parts of the hand-written collections of the late XVI-XVII centuries. The main feature of the Troitsk version consists in inserts of quotations from Lucidarius into the author’s text, likely made by an editor from the XVII century: they accompany the statements of Maximus the Greek and ensure their perception by the reader. The versions differ by the content amount. Another anti-apocryphal writing by Maximus the Greek “The tale of handwritten recording of sins” has been preserved in two versions, its handwriting tradition has been described.

The Petition of 1670 by the Old Believer Monk Avraamii (died 1672) is the most striking polemical work of the early Old Believers, which helped to struggle for abolishing Patriarch Nikon’s church reform. However, the study of the Petition is at an early stage nowadays, the same like a century ago. The main objective is to find out correlation of two known versions of the work. The author supposes that it is crucial to study the handwritten collection by Avraamii “The Christian Secure Shield of Faith” (1667-1669) (Avraamii included its great part in a revised form into the Petition) as well as other writings of the Monk and his associates (Deacon Fedor, Archpriest Avvakum, Geronty of Solovki) also included fragmentally into the Petition. The texts analysis allows confirming the hypothesis expressed previously by researchers that of the two currently known versions of this work the 1^st one should be recognized as the closest to the author’s text. This text version, different from the author’s one, previously published by N.I. Subbotin and most often cited in studies, has signs of purposeful processing. This makes it possible to consider the 2^nd version as a special variant of the Petition. However, the nature of its processing appears to be more complex than was thought previously. It is mainly expressed in rearrangement of the text fragments, and in several meaningful additions. It is proved that the co-creator of the Petition 2^nd version carried out coherent replacement of certain phrases and expressions. But the textological features of the 2^nd version indicate that it better preserved the text of the Petition’s sources in a number of cases. The author suggests that both versions are based on a common protograph, which means that a part of differences in the 2^nd version can be explained by individual manuscripts errors, not by the deliberate will of its creator.

The article discusses the participation and role of Archbishop Afanasy, a prominent hierarch of the Russian Orthodox Church, in the cases of two representatives of Russian culture of the second half of the XVII century - Peter Artemyev and Grigory Alekseevich Skibinsky. Both converted to the Catholic faith for the opportunity to study at universities in Europe, and after returning to Moscow faced persecution by the church authorities. The research material is a set of documentary and literary-journalistic texts representing a dossier on both church apostates (manuscripts of the late XVII - early XVIII centuries). The study concludes that Afanasy Kholmogorsky, despite his great distance from Moscow events, showed great interest in them and played a role in the affairs of both “apostates from piety”. Although the degree of his involvement was different in each cases. He carried out the supervisory and educational functions assigned to him by the church court in the case of Artemyev, who was exiled to Kholmogory. According to the archbishop’s replies included in the dossier, he regularly informed Patriarch Adrian about his conversations with Artemyev, a prisoner in Kholmogorsky prison, and expressed his negative opinion about the freethinker. Afanasy Kholmogorsky’s interest in the documents on the case of Grigory Skibinsky is evidenced by a note in the posthumous inventory of his library indicating that it contained some materials related to Skibinsky (at least there was his «penitential petition» addressed to Patriarch Adrian about the possibility of returning to the Orthodox Church). The author suggests that Afanasy Kholmogorsky could have become acquainted with Skibinsky case while being in Moscow for church business in 1697-1698. The archbishop’s interest in these materials may be related to the preparation of an extended edition of the book «The shield of faith» by Euphemy Chudovsky, as its curator and editor of the main text was Afanasy Kholmogorsky. Some materials related to cases of Peter Artemyev and Grigory Skibinsky were included in the additions to «The shield of faith».

The article deals with the scientific problem of understanding by the Old Believers in the XVIII century the need to justify their right for resolving issues of dogmatic theology. The first generation of the Old Belief defenders formulated the idea that after starting the church reform in Russia the humanity found itself on the verge of a catastrophe, which was assumed by Christian eschatological teaching. The country was declared to be the last frontier that defended the world from the final conquest by the Antichrist. The Vyg coomunity took advantage of this historical scheme stating that the Antichrist reigned in Russia and only the community existence retained hope to continue the mankind history. Realizing themselves as keepers of the Russian Church traditions, the Vyg community understood that the absence of priests naturally led to the inevitable transformations of the religious life. The article shows that they focused gradually on describing, or rather, forming their own traditions. Under such situation, the Vyg community was forced both to formalize its own traditions and discuss complex theological issues to justify new rules for the community’s religious life. The religious leaders wrote works devoted to solving the problems of dogmatic theology. Certainly, it was not on creating a doctrine system, but only on trying to resolve some theological issues. The analysis of “The Dogmatic Book” content compiled in the Vyg Old Believers community, led to the conclusion that this collection made an attempt to present the Old Believers’ individual works as a part of Orthodox dogmatic theology. This book’s author (Khludov`s collection, State Historical Museum, no. 272) managed to sum up the Vyg community’s views on dogmatic theology characterizing the Old Belief features.

The article introduces a new ego-document - a notebook of the merchant Andrey Konovalov from Turinsk. The notes date back to the mid XVIII century and record mainly the dates of the merchant’s movement along the rivers of Siberia to buy and sell goods. The way laid through Tyumen, Tobolsk, Samorov Yam, Surgut, Narym, Yeniseisk and other cities, but the trip’s ultimate goal was Kyakhta - the Russian-Chinese trade center. The private fur trade was forbidden that time by the state, which sent its caravans to China. Obviously, Andrey Konovalov participated in smuggling furs, so some notes were made with cryptography - transliterated in Latin. Andrei Konovalov’s notebook is one of the earliest ego-documents related to the Siberian merchant class. The records reflect the difficulties of the river route, Baikal storms. There was Chinese fabrics’ trade besides furs. In addition to business records, the book contains several family dates, a list of purchases for oneself (including icons), and a rewritten news on the discovery of Dimitri of Rostov’s relics. The document is preserved as a manuscript in the collection of Vladimir Malyshev Archive of Ancient Relics at the Institute of Russian Literature (Pushkin House) of the Russian Academy of Sciences. The second part of the manuscript is a dictionary of foreign words appeared in the Russian language and drawn from various books of the XVIII century. As a whole, the manuscript demonstrates its owner as an educated person. The publication of Turinsk Merchant’s notebook is preceded by an introductory article, restoring the chronological sequence of the entries with relevant comments. The historical context for understanding the manuscript is provided by the writings of historians and travelers of the XVIII century: Gerard Friedrich Miller, Peter Simon Pallas, Alexander Radishchev; as well as works of modern historians. The notebook gives an idea of the goods exchange at the Russian-Chinese border in Kyakhta, allows to restore the portrait of the notes’ author to some extent, to see the circle of his interests.

Forming the “journalist” profession, professional identity of press figures, development of common goals and objectives, ethical standards of author took place in the second half of the XIX century. During the period under study, journalists in Siberia were representatives of various professions, ranks, and positions. The article objective is to analyze the formation of the “journalist” profession in Siberia during the mentioned period. The research problematics correlate with the direction of “historical professionology”. The article describes approaches to studying professions in historical retrospect, presents definitions of such terms as “profession” and “Siberian journalist”. Persons who possessed literary skills, an ability to white vivid, extraordinary, succinct, but at the same time meaningful texts for newspapers, magazines, to observe the public life, started gradually to cooperate with periodicals. The authors were persons without special education, which was a feature of forming the profession and testified to incompleteness of formation of a regional group, establishing its professional boundaries. The community of journalists recruited figures from other groups of intellectuals into its ranks. The spheres of additional or main but not journalistic professional activity of authors could vary in different years under the influence of both external and internal factors. Some journalists became full-time employees, editors. Others combined journalistic work with another type of activity, which was the specifics of the profession formation. The experience gained in a different field of work favored the development of intellectuals as journalists, successful, active employees of editions. This was especially true for some scientists, teachers, doctors, officials, lawyers. Their closeness to society, interaction with the various groups of population were reflected in newspaper notes. Press employees despite their employment in other fields were recognized by fellow journalists, became members of editorial offices and were perceived as members of the journalistic group.

The paper discusses publishing strategies used by Far Eastern publishing houses at the transition stage from the state to market model (the late 1980s - early 1990s) as well as the book publishing strategies employed in the Russian Far East in the post-Soviet period (mid-1990s - early 2000s). During the transition from the book publishing state to a market model, the leading role in the Russian Far East was assigned to state and institutional publishing houses. The strategies used by them differed from those employed by private publishing houses located in western Russia. In 1986-1991, research institutes were the leaders of the Far Eastern book publishing industry, but in 1990-1991, a significant part of editions produced by Far Eastern publishing houses was science fiction and adventure genres. Therefore, the strategy of the Far Eastern publishing of this period was literary and artistic one. In 1991-1994, universities took over the leading positions in producing literature in the Far East, which indicates the presence of academic strategy. At the same time, children’s book publishing was actively developing, so traditionalist, or universal, strategy became widespread. In post-Soviet period (mid-1990s - early 2000s), since 1994-1995 till the middle of 1996, higher education institutions became the most active participants of the publishing process in the Far East, so the university strategy became decisive. In 1995-1998, concentration of media assets of various enterprises started in the Russian Far East, and some university publishing houses were transformed into publishing and printing complexes and media holdings, thus the external growth strategy was developed. In 1998-2000, the book market of the Far East formed under the effect of specific and mixed strategies, such as the strategy of launching new products on the market, which includes a strategy of focusing, or narrow specialization (regional natural history) aimed at a verified target audience of the publishing house. Since 2001, independent and online strategies have emerged, which made it possible to satisfy customers’ demand and at the same time diminish risks by reducing circulation.

A conjugated physical and mathematical model for the combustion of a mixed solid fuel with the addition of polydisperse boron powder is presented. The gas-dynamic processes in a two-phase, multi-velocity, and multi-temperature heat-conducting medium, as well as heat transfer and reaction processes in solid fuel are taken into account in this model above the solid fuel surface. Boundary conditions for the equality of heat and mass flows of fuel components are set on the fuel surface. From the numerical solution of the system of equations, the dependence of the burning rate of a mixed solid fuel containing boron particles on the pressure above the fuel surface is determined.

This paper presents the results of a study of the ignition of nine brands of coal from the Kuznetsk Basin by laser pulses (120 μs and 1064 nm). Depending on the laser pulse energy density, three types of processes can be distinguished in the general process of coal ignition, and they differ in threshold, temporal, and spectral-kinetic characteristics. The first type is associated with flame ignition on the surface of coal particles, and the second and third types are related to the initiation of various thermochemical reactions within particles. The laser pulse energy density defines the intensity and duration of the flame glow, as well as the flame column height.

The detonation characteristics of an aluminized EMX with a density of ≈0.5 g/cm³ and with a mass content of aluminum up to 20 % were determined. The addition of aluminum leads to an increase in detonation velocity and detonation pressure in comparison with the parameters of the pure EMX. Replacing aluminum with ground glass leads to a decrease in both detonation velocity and pressure. The increased detonation characteristics of the aluminized EMX can be due to the partial reaction of aluminum before the Chapman-Jouguet plane. The brightness temperature of detonation products of the aluminized EMX was measured. It is shown that it decreases with the addition of aluminum to the EMX. This result demonstrates the complex effect of aluminum addition on the detonation characteristics of the EMX.

The article describes a technical approach to justification of pitwall parameters based on an integrated geomechanical research of pitwall rock mass using cores from specially drilled earth bores. The sizes of structural blocks, the rock mass quality index and structural weakness coefficient are determined. The strength characteristics of rocks and their physical properties are studied on a laboratory scale. Estimates of pitwall stability using different methods show a good agreement. The optimal pitwall parameters are recommended.

The experimental and theoretical studies show that plane deformation of granular medium induces formation of clusters with sizes of the order of 10-15 diameters of particles. The process of biaxial compression is examined. It is found that deformation has four basic modes conformable with different shapes of clusters. The modes feature a very complex alternation behavior. The process of deformation possesses memory with the Hurst exponent of 0.84. The limit loads in different modes can differ by 2 or 3 times. In problems on deformation of granular media, the calculation of mechanical condition of domains less than 80-100 diameters of particles in size should use not the continuum models but the discrete element method.

The article describes a new method proposed for the mine geometry-based prediction of location and vertical amplitude of faults within the boundaries of an extraction panel using the data on survey network coordinates. A survey network is split into cells-convex quadrilaterals with their vertexes representing the survey grid points. For each quadrilateral, the geometric uncertainties of the coal seam hypsometry are estimated as closure errors and are eliminated in the course of the survey grid adjustment by means of correction of heights. The method consists in calculation and analysis of corrections for the measured absolute heights of the coal seam points arranged in mine roadways, the introduction of which eliminates the interpretation uncertainty of geological data. The corrections are only assumed to be the weights of the measurement and interpolation errors in the neighborhood of specific measurement points. A fault is predicted when there is a jump between the values of the correction for the neighbor measurement points.

To enhance the scientific nature and the reliability of physical modeling of tailings dams, the present developments and main achievements are discussed from four perspectives: dam break, downstream evolution, stability evaluation and protection tests. The experiment materials, methods of measurement and instruments used are summarized. The problems and shortcomings of physical model tests are investigated in terms of the difference between a physical model and a prototype, nature of the experiment, methods of measurement, etc. Emerging technologies such as artificial intelligence and 3D printing to improve safety of tailings dams are discussed. The scope of the review embraces environmental impact of tailings dams in case of accidents.

The article describes the studies into the geological conditions and geotechnologies of coal mining in brachysyncline-type fields. It is found that such coalfields have some specifics which governs the choice of the open pit mining technologies to be efficient. The authors propose an approach to justification of a sequence of mining and to selection of geotechnologies for coalfields in brachysynclinal folds.

In mid-May 2014, heavy rainfall caused unprecedented floods in Serbia. Kolubara Mining Basin, the greatest coal producer in the Electric Power Industry of Serbia, has suffered enormous material damage. Coal production at four open-pit mines was suspended and the operation of four thermal power plants was threatened. The consequences of the uncontrollable water, physically visible on open-pit coal mines, were felt in all system sectors. Intersectorial analysis was used to view and diagnose the situation of the system’s production sectors. The paper gives the summaries of uncontrollable water, mining and energy system structure, the implementation of the intersectorial model in the analysis, comments on the analysis results, evaluation, and a conclusion from the aspect of efficiency and reliability of application in solving practical problems.

The author proposes a determination procedure for calibration factors for current frequency converter of a tunnel fan motor with regard to air flow rate control time at each train density. The ranges of three quality criteria of ventilation control in subways are determined. The ventilation energy consumption at a subway station is analyzed as function of an opening angle of air governor flaps in the ventilation connection at the station, and the economic runs are selected for the flap air governor. The change in the air flow rate at a station versus the flap air governor setting angle serves the basis to create the automatic air control algorithm for a shallow subway with ventilation due to the piston effect in the absence of tunnel fans. The algorithm allows maintenance of the required air renewal at subway stations in rush hours.

The article presents an algorithm of automatic determination of fan influence zones under conditions of their dynamic change. The use of fuzzy logic enables stabilization of crossing influence zones of fans and allows compensating impossibility of their strict differentiation when determining the most difficult-to-ventilate direction. The solution to the problem of the real-time air distribution control in a mine ventilation network is stable and close to optimality. The practical relevance of the proposed fan control algorithm and the correctness of the formulas are proved by the result of simulation modeling of automatic ventilation control operation in mine 4RU of Belaruskali.

The authors study the processing behavior of luminophore-containing blends of zinc and cadmium chalcogenides with a view to using them for the modification of the kinetic and spectral characteristics toward enhanced recovery of weakly and abnormally luminescent diamonds usually lost in X-ray luminescence separation. It is shown that zinc and cadmium sulfides activated by copper and silver have the kinetic and spectral characteristics which are the most similar to natural diamonds. The procedure developed for the improvement of the processing behavior of luminophores with zinc and cadmium sulfides includes the circuits of surface activation with copper cations and subsequent treatment in the potassium butyl xanthate solution. The visiometric analysis reveals that the increased oil receptivity of luminophores and the dispersing agents ensure selective attachment of luminophores to diamonds. The bench testing proves feasibility of complete extraction of diamonds to concentrate, including weakly and abnormally luminescent crystals.

Using the methods of UV spectroscopy, potentiometry, laser and electron microscopy, the authors give a scientific ground and prove experimentally the mechanism of interaction between new complexing agents MDTC and CEDETC and low-dimensional gold on the surface of gold-bearing sulfides. The different surface coverage of sulfide minerals with CEDETC ensures selective hydrophobization and effective recovery of micro and nano gold from complex gold-bearing ore. The behavior of the chalcopyrite electrode potential confirms the active chemical adsorption of MDTC with the formation of the strong MDTC-Cu compound and the domination of CEDETC physisorption in the adsorption layer of minerals. The lab-scale testing of a gold-bearing ore sample from Olimpiada deposit shows that the use of MDTC and CEDETC in combination with butyl xanthate ensures the higher quality of the concentrate and the increased gold recovery by 6-7%.

The article describes the lab-scale tests aimed at development of an efficient technology for nepheline concentrate production from high-silica nepheline-bearing raw material to be a non-bauxite import-substituting feedstock for the aluminum industry in Russia and in the other countries with limited or totally unavailable high-quality bauxite reserves. The improved process flowchart ensures production of nepheline concentrate which satisfies requirements of subsequent processing by sintering with lime and contains not less than 26.4% of alumina and not more than 2.3% of total iron, with alumina recovery of not less than 90% at the silica modulus of 0.6 and alkali modulus of 0.5.

The leaching and agitation tests of gold-bearing tailings from Hassai Mine in Sudan are carried out to find the particle size to ensure the maximum recovery. The column tests revealed that it is easy to apply and recover about 65.52% of Au content from the Au-tailing heaps at Ariab mining company by heap leach process. The obtained recovery indicates that the economic commercial viability of the process to be applied for extraction of Au in the huge tailing heaps at Ariab mines.

The new methodological approach to modern integrated geomechanical monitoring of large-scale subsoil use facilities in Siberia uses the multimodal and digital factories of diversified experimental and theoretical geoinformation. The main elements of the geoinformation system are described with definition of communications implemented via systems of orchestration of the data containers. The information aggregation and transmission technologies use the Internet of Things and include data storage, processing and systematization stages with regard to the available information on subsoil use assets. The trials of the information system in its different modes and options are described as a case-study of Kuzbass and Norilsk mining industry. The authors propose a new energy-based approach to the integrated analysis of nonlinear deformation waves and seismic emission processes within the framework of theory of pendulum waves.

The manmade acoustic signal properties are determined for rock mass monitoring aimed to predict main roof subsidence in coal longwalls. The limit properties for the automatic problem algorithm are defined. The dynamics of the informative parameters of a manmade acoustic signal is demonstrated as a case-study of the main roof subsidence areas in longwalls in Yalevsky Mine, Kirov Mine and Komsomolets Mine. The parameter stability of the integral resonance frequency energy at different distances from a setup room lengthwise an extraction panel is studied in three longwalls in coal mines of SUEK-Kuzbass in order to find correlation between relative stresses and intensity of interlaminar strains. The proposed and proven prognostic parameter enables timing of main roof subsidence and evaluation of the process dynamics.

Soil-water characteristic curves (SWCC) are extremely important in solving practical engineering problems. Most of SWCC are measured based on the specimen in equilibrium, which has long test time, high specialization of test equipment and complicated test operation steps. Moreover, based on the existing equipment technical conditions, the determination of SWCC in the process of dehumidification and moisture absorption requires a variety of tests. Taking Jiangxi laterite, granite residual soil and expansive soil as the research object, SWCC based on the conventional geotechnical test is obtained. SWCC of dehumidification under no vertical load and vertical load and the soil water characteristic curves of dehumidification and moisture absorption are studied by conventional geotechnical tests. Compared with SWCC measured by geo experts pressure plate instrument, SWCC measured based on conventional geotechnical test is very close to that measured by pressure plate instrument.

Gas and dust clouding after large-scale blasting at Sitovo Quarry in the Lipetsk Region and the resultant pollution of the neighborhoods of the nearest towns is studied. The concentrations of solid particles less than 2.5 µm in size are determined in real time using modern equipment. The electronic filming of a large-scale blast and the dust cloud transfer with the wind within the limits of the quarry allowed considering a theoretical partial problem on propagation of fine-dispersion dust from the upper portion of the cloud from a height of 50-100 m to the recording points on ground surface beyond the quarry limits. The methods of computational fluid dynamics are used to model flow at the bottom of the atmospheric boundary layer disturbed by the wind interaction with the quarry topography. It is shown that turbulent diffusion ensures vertical dispersion of micro particles down to the recording points. An explanation is proposed for the revealed non-monotonic maximal concentration of dust over ground surface with an increasing distance from the quarry.

The new dust suppression method using chemical agents has been developed, patented and put in use in some surface and underground mines in Kuzbass, in the Novosibirsk Region and in Khakassia. As compared with the known solutions, this method allows enhancing efficiency of dust suppression in combination with extra effect of decreased freezing of coal during transportation.