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Online first

Online first (OF) is the advance electronic publication of accepted articles that will be posted in upcoming issues. OF articles cannot be changed (including title, authors, etc.) or withdrawn (without regard to violation of publication ethics). Such an online publication differs from a traditional one in that it does not have fixed page numbers and is not tied to a specific journal issue. However, each such publication has a digital DOI identifier for correct citation and is indexed by databases in the usual manner. That is, the article can be fully used in the lists of references and indicated in the reporting documents.

After the formation of the printed version of the volume, the missing information is added to the articles, but the URL address of the article and DOI are not changed.

Advantages of Online First:

  • Reduces publication time
  • Provides quick access to the latest research results

Online First articles are posted in Russian and English as they are approved by the editor-in-chief and as the editorial process is completed.

When citing an Online First article, you must include the author's name, article title, journal title, year of publication, and DOI. Example of the citation format:

Pashkevich Mariya A., Bykova Marina V.  Methodology for Thermal Desorption Treatment of Local Soil Pollution by Oil Products at the Facilities of the Mineral Resource Industry. Journal of Mining Institute. 2022. DOI: 10.31897/PMI.2022.6

Пашкевич М.А., Быкова М.В. Методология термодесорбционной очистки локальных загрязнений почв от нефтепродуктов на объектах минерально-сырьевого комплекса. Записки Горного института. 2022. DOI: 10.31897/PMI.2022.6

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Geotechnical Engineering and Engineering Geology
  • Date submitted
    2021-02-21
  • Date accepted
    2022-04-06
  • Date published
    2022-05-31

Study of the kinetics of the process of producing pellets from red mud in a hydrogen flow

The reduction kinetics of serial phase transitions of iron oxides during reduction to a metallized state with different modes of technical hydrogen supply has been studied and substantiated. The results of the pellets formation when 3-5 % molasses is added to the red mud as a binding reagent are presented. The dependences of the reduction rate of iron oxides on the hydrogen flow rate are obtained. Based on the results of the experiments, a kinetic model was constructed, and with the help of X-ray phase and spectral analysis, it was proved that the agglomerates formed after heat treatment received high strength due to the adhesion of reduced iron particles with red mud particles. The use of a new type of charge materials in melting units will reduce the amount of emissions and dust fractions, as well as increase the metal yield.

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Akhmed A. Khalifa, Vladimir Yu. Bazhin, Yana V. Ustinova, Mokhamed E. Kh. Shalabi (2022) Study of the kinetics of the process of producing pellets from red mud in a hydrogen flow. Journal of Mining Institute. DOI: 10.31897/PMI.2022.18
Geotechnical Engineering and Engineering Geology
  • Date submitted
    2021-04-06
  • Date accepted
    2022-04-26
  • Date published
    2022-06-28

Experimental study on the effect of rock pressure on sandstone permeability

The results of laboratory studies to determine the effect of effective stress on the permeability of sandstone are presented. During the test, the samples were subjected to a stepwise increase or decrease of the effective stress (at a constant pore pressure) in a specified step. The values of rock permeability at different values of effective stress were determined, and the influence of the grain size of the reservoir rock matrix on the character of the change in the sandstone permeability coefficient was also established. During the test, a decrease in permeability was observed with an increase in effective stress. It was found that as a result of gradual loading/unloading of the sandstone sample, the original permeability values were not restored, which indicates the beginning of the formation of residual strains in the rock. This effect should be taken into account when modeling field development because in the process of reserves extraction the effective stress acting on the reservoir rock skeleton changes, which results in a significant chang in rock permeability. The results of laboratory studies showed that the deviation of permeability in medium-grained sandstones relative to the initial value was greater than in medium- and fine-grained sandstones. The pressure sensitivity coefficient and constant of material, which are used in empirical relationships between permeability and effective stress, were numerically estimated. At the same time, the constant of material showed no such convergence, which indicates that the values of this parameter are individual for each rock.

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Dmitry G. Petrakov, Grigory M. Penkov, Anatoly B. Zolotukhin (2022) Experimental study on the effect of rock pressure on sandstone permeability. Journal of Mining Institute. DOI: 10.31897/PMI.2022.24
Geotechnical Engineering and Engineering Geology
  • Date submitted
    2021-05-31
  • Date accepted
    2022-02-24
  • Date published
    2022-05-20

Mathematical model of linear and non-linear proppant concentration increase during hydraulic fracturing – a solution for sequential injection of a number of proppant types

It is known that much of the technology aimed at intensifying fluid inflow by means of hydraulic fracturing involves the use of proppant. In order to transport and position grains in the fracture, a uniform supply of proppant with a given concentration into the fracturing fluid is ensured. The aim of the operation is to eliminate the occurrence of distortions in the injection program of proppant HF. A mathematically accurate linear increase of concentration under given conditions is possible only if the transient concentration is correctly defined. The proposed approach allows to correctly form a proppant HF work program for both linear and non-linear increase in proppant concentration. The scientific novelty of the work lies in application of a new mathematical model for direct calculation of injection program parameters, previously determined by trial and error method. A mathematical model of linear and non-linear increase of proppant concentration during HF was developed. For the first time, an analytical solution is presented that allows direct calculation of parameters of the main HF stages, including transient concentrations for given masses of the various types of proppant. The application of the mathematical model in formation of a treatment plan allows maintaining correct proppant mass distribution by fractions, which facilitates implementation of information and analytical systems, data transfer directly from a work program into databases. It is suggested to improve spreadsheet forms used in production, which would allow applying mathematical model of work program formation at each HF process without additional labour costs. The obtained mathematical model can be used to improve the software applied in the design, modelling and engineering support of HF processes.

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Aleksandr V. Kochetkov, Irik G. Fattakhov, Vyacheslav V. Mukhametshin, Lyubov S. Kuleshova, Shamil G. Mingulov (2022) Mathematical model of linear and non-linear proppant concentration increase during hydraulic fracturing – a solution for sequential injection of a number of proppant types. Journal of Mining Institute. DOI: 10.31897/PMI.2022.10
Geotechnical Engineering and Engineering Geology
  • Date submitted
    2021-09-17
  • Date accepted
    2022-04-06
  • Date published
    2022-05-17

Technique for calculating technological parameters of non-Newtonian liquids injection into oil well during workover

Technique for automated calculation of technological parameters for non-Newtonian liquids injection into a well during workover is presented. At the first stage the algorithm processes initial flow or viscosity curve in order to determine rheological parameters and coefficients included in equations of rheological models of non-Newtonian fluids. At the second stage, based on data from the previous stage, the program calculates well design and pump operation modes, permissible values of liquid flow rate and viscosity, to prevent possible hydraulic fracturing. Based on the results of calculations and dependencies, a decision is made on the necessity of changing the technological parameters of non-Newtonian liquid injection and/or its composition (components content, chemical base) in order to prevent the violation of the technological operation, such as unintentional formation of fractures due to hydraulic fracturing. Fracturing can lead to catastrophic absorptions and, consequently, to increased consumption of technological liquids pumped into the well during workover. Furthermore, there is an increased risk of uncontrolled gas breakthrough through highly conductive channels.

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Dmitry V. Mardashov, Аnton V. Bondarenko, Inzir R. Raupov (2022) Technique for calculating technological parameters of non-Newtonian liquids injection into oil well during workover. Journal of Mining Institute. DOI: 10.31897/PMI.2022.16
Geotechnical Engineering and Engineering Geology
  • Date submitted
    2021-12-16
  • Date accepted
    2022-04-06
  • Date published
    2022-06-03

The Upper Kotlin clays of the Saint Petersburg region as a foundation and medium for unique facilities: an engineering-geological and geotechnical analysis

The article reviews the issues concerned with correctness of the engineering-geological and hydrogeological assessment of the Upper Kotlin clays, which serve as the foundation or host medium for facilities of various applications. It is claimed that the Upper Kotlin clays should be regarded as a fissured-block medium and, consequently, their assessment as an absolutely impermeablestratum should be totally excluded. Presence of a high-pressure Vendian aquifer in the lower part of the geological profile of the Vendian sediments causes inflow of these saline waters through the fissured clay strata, which promotes upheaval of tunnels as well as corrosion of their lining. The nature of the corrosion processes is defined not only by the chemical composition and physical and chemical features of these waters, but also by the biochemical factor, i.e. the availability of a rich microbial community. For the first time ever, the effect of saline water inflow into the Vendian complex on negative transformation of the clay blocks was studied. Experimental results revealed a decrease in the clay shear resistance caused by transformation of the structural bonds and microbial activity with the clay’s physical state being unchanged. Typification of the Upper Kotlin clay section has been performed for the region of Saint Petersburg in terms of the complexity of surface and underground building conditions. Fissuring of the bedclays, the possibility of confined groundwater inflow through the fissured strata and the consequent reduction of the block strength as well as the active corrosion of underground load-bearing structures must be taken into account in designing unique and typical surface and underground facilities and have to be incorporated into the normative documents.

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Regina E. Dashko, Georgiy A. Lokhmatikov (2022) The Upper Kotlin clays of the Saint Petersburg region as a foundation and medium for unique facilities: an engineering-geological and geotechnical analysis. Journal of Mining Institute. DOI: 10.31897/PMI.2022.13
Geology
  • Date submitted
    2022-01-24
  • Date accepted
    2022-04-26
  • Date published
    2022-05-31

Forecast of radionuclide migration in groundwater of the zone affected by construction drainage at the Leningrad NPP-2

The distribution of natural (at the level of global background) and technogenic radionuclides in groundwater of the industrial zone in Sosnovy Bor town, where several nuclear power facilities are operating, was analyzed. The main technogenic radionuclides recorded in groundwater samples are cesium ( 137 Cs), strontium ( 90 Sr), and tritium isotopes. The first two aquifers from the surface are subject to contamination: the Quaternary and the upper zone of the Lomonosov aquifer. Based on extensive material on the engineering and geological studies of the work area, a 3D geological model and hydrodynamic and geomigration models of the industrial zone were constructed. By means of modeling, the extent and nature of changes in hydrogeological conditions of area resulting from the construction and operational drainage of the new stage of the Leningrad Nuclear Power Plant (LNPP-2) were determined. The “historical” halo of radioactive contamination of groundwater forming (1970-1990) at the site adjacent to the NPP, where the storage facility of low- and medium-level radioactive waste is located, falls into the zone of influence. Interpretation of monitoring data allowed obtaining the migration parameters for predictive estimates. Modeling has shown that during the time of the LNPP-2 operation there is was no intake of contaminated water by the drainage system of the new power plant.

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Valentina A. Erzova, Vyacheslav G. Rumynin, Anton M. Nikulenkov, Konstantin V. Vladimirov, Sergei M. Sudarikov, Mariia V. Vilkina (2022) Forecast of radionuclide migration in groundwater of the zone affected by construction drainage at the Leningrad NPP-2. Journal of Mining Institute. DOI: 10.31897/PMI.2022.27
Geology
  • Date submitted
    2022-02-26
  • Date accepted
    2022-04-26
  • Date published
    2022-06-06

Type intrusive series of the Far East belt of lithium-fluoric granites and its ore content

The evolution and ore content of granitoid magmatism in the Far East belt of lithium-fluoric granites lying in the Russian sector of the Pacific ore belt have been studied. Correlation of intrusive series in the Novosibirsk-Chukotka, Yana-Kolyma and Sikhote-Alin granitoid provinces of the studied region allowed to establish the unity of composition, evolution, and ore content of the Late Mesozoic granitoid magmatism. On this basis, a model of the type potentially ore-bearing intrusive series of the Far East belt of lithium-fluoric granites has been developed: complexes of diorite-granodiorite and granite formations → complexes of monzonite-syenite and granite-granosyenite formations → complexes of leucogranite and alaskite formations → complexes of rare-metal lithium-fluoric granite formation. The main petrological trend in granitoid evolution is increasing silicic acidity, alkalinity, and rare-metal-tin specialization along with decreasing size and number of intrusions. At the end of the intrusive series, small complexes of rare-metal lithium-fluoric granites form. The main metallogenic trend in granitoid evolution is an increasing ore-generating potential of intrusive complexes with their growing differentiation. Ore-bearing rare-metal-granite magmatism of the Russian Far East developed in the Late Cretaceous and determined the formation of large tungsten-tin deposits with associated rare metals: Ta, Nb, Li, Cs, Rb, In in areas with completed intrusive series. Incompleteness of granitoid series of the Pacific ore belt should be considered as a potential sign of blind rare-metal-tin mineralization. The Far East belt of lithium-fluoric granites extends to the Chinese and Alaskan sectors of the Pacific belt, which allows the model of the type ore-bearing intrusive series to be used in the territories adjacent to Russia.

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Viktor I. Alekseev (2022) Type intrusive series of the Far East belt of lithium-fluoric granites and its ore content. Journal of Mining Institute. DOI: 10.31897/PMI.2022.21
Geology
  • Date submitted
    2022-03-03
  • Date accepted
    2022-04-26
  • Date published
    2022-06-06

Peculiarities of rare-metal mineralization and genetic relationship of mineral associations in the eastern rim of Murzinsko-Aduysky anticlinorium (the Ural Emerald Belt)

The paper presents features of the location and composition, as well as a generalization of data on the age of rare-metal mineralization developed at the deposits and occurrences of rare metals and gemstones in the eastern rim of Murzinsko-Aduysky anticlinorium, within the Ural Emerald Belt, which is a classic ore and mineralogical object and has been studied for almost two hundred years. With a significant number and variety of prospecting, research and scientific works devoted mainly to emerald-bearing mica complexes and beryl mineralization, as well as rare-metal pegmatites, scientific literature has so far lacked generalizations on the formation of numerous mineral associations and ore formations that represents a uniform genetic process in this ore district. The aim of the work is a comprehensive geological-mineralogical analysis of mineral associations of the eastern rim of Murzinsko-Aduysky anticlinorium and studying their age, formation conditions and characteristic features to determine the possibility of expanding and using the mineral resource base of the Urals through developing new prognostic and prospecting criteria for rare-metal and gemstone ore formations and creating the new devices for promising objects prospecting

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Mikhail P. Popov (2022) Peculiarities of rare-metal mineralization and genetic relationship of mineral associations in the eastern rim of Murzinsko-Aduysky anticlinorium (the Ural Emerald Belt). Journal of Mining Institute. DOI: 10.31897/PMI.2022.19