JMS, Vol. 59, No. 3, 2023
GEOMECHANICS
MODIFIED FEM ALGORITHM WITH INTRODUCED ELASTIC BLOCKS FOR GEOMECHANICAL MODELING OF UNDERMINED ROCK MASS
M. A. Zhuravkov*, M. A. Nikolaichik**, and N. M. Klimkovich***
Belarusian State University, Minsk, 220030 Belarus
*e-mail: zhuravkov@bsu.by
**e-mail: nikolaitchik.m@gmail.com
***e-mail: nikita.klimkovitch@yandex.ru
The authors attempt the numerical modeling of the geomechanical behavior of rock mass in the course of single unit face longwall mining. The calculation models are constructed for the rock mass geomechanics from ground surface down to mining depth. The model problems are solved in two and in three dimensions. The resultant characteristics of a trough subsidence on ground surface were compared with the data of engineering analysis. The modeling results are verified using actual in-situ observations of check point subsidence. The comparative analysis of the trough subsidence characteristics on ground surface from the geomechanical modeling and engineering analysis show their correlation in case of all test alternatives.
Conjugate numerical methods, finite element method, block components, longwall mining, induced jointing domains, trough subsidence, stress–strain behavior
DOI: 10.1134/S1062739123030018
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INTERFACE STRUCTURES AND STRENGTH CHARACTERISTICS OF COAL FREEZING ADHESION ON TRANSPORTATION EQUIPMENT IN COLD REGIONS
Da An*, Yifei Chi, and Chunhua Wang
School of Mechanic and Electronic Engineering, Shenyang Aerospace University,
Shenyang, 110000 China
*e-mail: 897785216@qq.com
The coal freezing adhesion tests on typical substrates including metal, rubber and plastic substrates were carried out, the steady and separated interfacial structures between coal and substrate surfaces were investigated, and the strength characteristics of coal freezing adhesion on substrates were analyzed in depth. At the stable interface of coal freezing adhesion, the frozen coal slime area is formed in some areas, while the direct contact area as well as the void area may appear between the frozen coal and substrate surface in other areas. The surfaces of metal and rubber substrates have small water contact angle and good wettability, and the separation failure of freezing adhesion occurs at the interior of the frozen coal slime area or the frozen coal itself, thus the coal freezing adhesion strength is reflected by the freezing strength of the frozen coal slime or the frozen coal itself. The surfaces of plastic substrates have large water contact angle and poor wettability, and the separation failure occurs at the bonding interface between the frozen coal slime area and substrate surface, thus the coal freezing adhesion strength is reflected by the bonding strength. The coal freezing adhesive strength on plastic substrates is 4–12 time less than on metal and rubber substrates.
Coal transportation, coal freezing adhesion, interface structure, coal freezing adhesive strength
DOI: 10.1134/S106273912303002X
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ROCK FRACTURE
ESTIMATION OF SPECIFIC CUTTING ENERGY AND NOISE LEVEL IN CIRCULAR SAW CUTTING PROCESS BY LEEB, SHORE AND SCHMIDT HARDNESS VALUES OF ROCKS
G. Ekincioğlu* and D. Akbay
Ahi Evran University, Kaman Vocational School, Kaman, Kırşehir, 40300 Turkey
*e-mail: gokhanekincioglu@gmail.com
Çanakkale Onsekiz Mart University, Çan Vocational School, Çan, Çanakkale, 17400 Turkey
In this study, the rebound hardness values (Shore–Schmidt–Leeb) were calculated for 12 different carbonate rocks using three different devices. The relationships between hardness values and rock cuttability properties (specific cutting energy and noise level) were investigated by simple and multiple regression analyses. It is determined that the Leeb hardness of the rocks can be an alternative to the Shore hardness and Schmidt hardness and that both the specific cutting energy and the noise level can be estimated with the Leeb hardness values.
Natural stone, Shore hardness, Schmidt hardness, Leeb hardness, specific cutting energy, noise level
DOI: 10.1134/S1062739123030031
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MECHANICAL PROPERTIES OF SHOTCRETE PRODUCED WITH RECYCLED AGGREGATES FROM CONSTRUCTION WASTES
G. Külekçi*, M. Çullu**, and A. O. Yilmaz***
Gumushane University, Faculty of Engineering and Natural Sciences, Department of Mining Engineering, Gumushane, 29100 Turkey
*e-mail: gkulekci@gumushane.edu.tr
**e-mail: mcullu@gumushane.edu.tr
Karadeniz Technical University, Department of Mining Engineering, Trabzon, 61080 Turkey
***e-mail: aoyilmaz@ktu.edu.tr
This study examines the usability of concrete wastes generated from buildings demolished for various reasons in shotcrete. The strength properties of shotcrete produced from recycled aggregates (RA), cylinder specimen and plate specimen were tested. it was observed that as the ratio of RA used instead of natural aggregate increases, the strength of the cylinder specimen decreases, ultrasonic pulse velocity increases. The toughness value has increased in the concrete samples prepared by replacing the natural aggregate with 50% or more RA. It was observed that the fiber amount and load carrying capacity were proportional in fiber reinforced plates prepared using RA. As a result, it has been observed that the interaction of RA with fiber is positive and it can be used in shotcrete. It has been revealed that RA can contribute to the reduction of environmental pollution caused by construction and wreckage wastes and can be presented as an alternative to natural aggregate.
Construction and wreckage wastes, plate tests, recycled aggregate, shotcrete, waste management
DOI: 10.1134/S1062739123030043
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MINERAL MINING TECHNOLOGY
SYSTEM-BASED IDENTIFICATION AND FORMALIZATION OF FLOW- AND DIFFUSION-TYPE MASS TRANSFER PROCESSES DURING GAS DRAINAGE IN COAL SEAMS
M. V. Kurlenya*, K. Kh. Lee**, V. G. Kazantsev, H. U. Li, and S. V. Kulyavtseva***
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences,
Novosibirsk, 630091 Russia
*e-mail: kurlenya@misd.ru
Scientific Center VostNII, Kemerovo, 650002 Russia
**e-mail: leeanatoly@mail.ru
Federal Research and Production Center ALTAI,
Biysk, 659322 Russia
***e-mail: wts-01@mail.ru
The authors discuss the mechanisms of gas transfer in exposed coal on the strength of the phenomenology of coal gas content. The phenomenon of gas transfer is divided into flow and diffusion, and the major characteristics of these processes in the overall gas travel are revealed.
Coal seam, gas drainage, flow, diffusion, adsorption pressure, gas concentrations, porosity
DOI: 10.1134/S1062739123030055
REFERENCES
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6. Malyshev, Yu.N., Trubetskoy, К.N., and Airuni, А.Т., Fundamental’no-prikladnye metody resheniya problemy ugol’nykh plastov (Fundamental and Applied Methods for Solving the Problem of Coal Seams), Moscow: IAGN, 2000.
7. Alekseev, А.D., Airuni, А.Т., Vasyuchkov, Yu.F., Zverev, I.V., Sinolitskii, V.V., Dolgova, М.О., and Ettinger, I.D., The Property of the Organic Matter of Coal to Form Metastable Single-Phase Systems with Gases Similar to Solid Solutions, Discovery, Diploma no. 9, Application no. А-016 dated 30.06.94, registration no. 16, Moscow: 1994.
8. Polevshchikov, G.Ya., Nepeina, Е.S., and Tsuran, Е.М., Development of a Procedure for Assessing Decomposition Thermodynamics of Coal-Methane Geomaterials, Vestn. KGTU, 2015, no. 6, pp. 13–18.
9. Li, К.Kh., Kazantsev, V.G., Li Hi Un, Zykov, V.S., and Ivanov, V.V., Influence of Methane Drainage Boreholes on Kinetics of Coal-Methane Seams, Vestn. Nauchn. Tsentra Bezop. Rabot Ugol. Prom., 2023, no. 1, pp. 33–41.
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11. Kabirova, S.V., Voroshilov, V.G., Portnov, V.S., and Akhmatnurov, D.R., Estimation of Gas Content in Formation K10 within the Sherubainurinsk Section of Karaganda Coal Basin, Izv. TPU. Inzhiniring Georesursov, 2019, vol. 330, no. 5, pp. 64–74.
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GEOMECHANICAL ASSESSMENT OF OVERLYING ROCK MASS IN BLIND OREBODY MINING AT SHEREGESH DEPOSIT
A. A. Eremenko*, V. A. Shtirts**, and V. S. Pisarev***
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
*e-mail: eremenko@ngs.ru
Mining Assets—Division, EVRAZ ZSMK, Sheregesh, 652971 Russia
**e-mail: Vladimir.Shtirts@evraz.com
Siberian State University of Geosystems and Technologies, Novosibirsk, 630108 Russia
***e-mail: v.s.pisarev@sgugit.ru
The authors make a geomechanical assessment of undermined rock mass before and after formation of a sinkhole on ground surface during blind orebody mining on Podruslovy site. The geophysical surveys allowed finding the pillar size dynamics above the mined-out void. The borehole gravity measurements in integration with an orthophotomap made it possible to determine the boundaries of the mined-out void and the parameters of the sinkhole. The mathematical modeling estimated the zones of stress concentration and fracture in enclosing rock mass in the neighborhood of the test boreholes. The safety precautions are designed for the further mining operations on Podruslovy site at Sheregesh deposit.
Overlying rock mass, rock pillar, mined-out void, orebody, gravity measurements, mining system, ore, bumps, mineral deposit
DOI: 10.1134/S1062739123030067
REFERENCES
1. Eremenko, A.A., Shaposhnik, Yu.N., Filippov, V.N., and Konurin, A.I., Development of Scientific Framework for Safe and Efficient Geotechnology for Rockburst-Hazardous Mineral Deposits in Western Siberia and the Far North, Gornyi Zhurnal, 2019, np. 10, pp. 33–39.
2. Eremenko, A.A., Eremenko, V.A., and Gaidin, A.P., Gorno-geologicheskie i geomekhanicheskie usloviya razrabotki zhelezorudnykh mestorozhdenii v Altae-Sayanskoi skladchatoi oblasti (Geological and Geomechanical Conditions of Iron Ore Mining in the Altai-Sayan Folded Area), Novosibirsk: Nauka, 2009.
3. Kalugin, A.S., Kalugina, T.S., Ivanov, V.I., et al, Zhelezorudnye mestorozhdeniya Sibiri (Iron Ore Deposits in Siberia), Novosibirsk: Nauka, 1981.
4. Kuznetsov, V.A., Tectonic Zoning and Basic Features of Endogenous Metallogeny in Mountainous Altai, Vopr. Geolog. Metallogen. Gorn. Altaya, 1963, issue 13, pp. 7–70.
5. Smirnov, V.I. (Ed.), Rudnye mestorozhdeniya SSSR (Ore Deposits in the USSR), Moscow: Nedra, 1978, vol. 1.
6. Kurlenya, M.V., Eremenko, A.A., and Shrepp, B.V., Geomekhanicheskie problemy razrabotki zhelezorudnykh mestorozhdenii Sibiri (Geomechanical Problems in Iron Ore Mining in Siberia), Novosibirsk: Nauka, 2001.
7. Kononov, A.N., Shrepp, B.V., Kononov, O.A., Nikitin, V.N., and Krylova, O.A., Phenomenon of Pulsating Horizontal Stress in Enclosing Rocks and Orebodies in the South of Siberia, Gornyi Zhurnal, 1995, no. 8, pp. 9–11.
8. Ukazaniya po bezopasnomu vedeniyu gornykh rabot na Tashtagol’skom mestorozhenii, sklonnom i opasnom po gornym udaram (Guides for Safe Mining at Rockburst-Hazardous Tashtagol Deposit), Novosibirsk–Novokuznetsk, 2021.
9. Khademian, Z. and Ugur, O., Computational Framework for Simulating Rock Burst in Shear and Compression, Int. J. Rock Mech. Min. Sci., 2018, vol. 110, pp. 279–290.
10. Xia-Ting Feng, Jianpo Liu, Bingrui Chen, Yaxun Xiao, Guangliang Feng, and Fengpeng Zhang, Monitoring, Warning, and Control of Rockburst in Deep Metal Mines, Eng., 2017, vol. 3, iss. 4, pp. 538–545.
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12. Yang Yu, Ka-zhong Deng, Yi Luo, Shen-en Chen, and Hui-fu Zhuang, An Improved Method for Long-Term Stability Evaluation of Strip Mining and Pillar Design, Int. J. Rock Mech. Min. Sci., 2018, vol. 107, pp. 25–30.
13. Kocharyan, G.G., Zolotukhin, S.R., Kalinin, E.V., Panas’yan, V.V., and Spungin, V.G., Stress–Strain State of Rock Mass in the Zone of Tectonic Fractures in the Korobkov Iron Ore Deposit, Journal of Mining Science, 2018, vol. 54, no. 1, pp. 13–20.
14. Kropotkin, P.N., Rezul’taty izmerenii napryazhennogo sostoyania gornykh porod v Skandinavii, v Zapadnoi Evrope, v Islandii, Afrike i Severnoi Amerike (Measured Stresses in Rocks in Scandinavia, Western Europe, Island, Africa and North America), Moscow: Nauka, 1973.
15. Baryshnikov, V.D. and Gakhova, L.N., Geomechanical Conditions of Kimberlite Extraction in Terms of Internatsional’naya Kimberlite Pipe, Journal of Mining Science, 2009, vol. 45, no. 2, pp. 137–145.
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20. Sleptsov, S.N., Eremenko, A.A., Leftor, V.V., and Prib, V.V., Methods of Relaxation of Rock Mass from Stresses in Rockburst-Hazardous Iron Ore Mining, Bezop. Truda v Prom., 2021, no. 12, pp. 7–12.
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USABILITY OF CHLORIDE MINE WATER IN PREPARING CEMENTED PASTE BACKFILL
T. I. Rubashkina* and M. A. Kostina
Belgorod State University, Belgorod, 308015 Russia
*e-mail: korneychuk@bsu.edu.ru
The usability of salt mine water with high content of chloride-ions in preparing cemented paste backfill is studied. The rheological and mechanical properties of experimental backfill mixtures at different cement consumption are analyzed at uniform and compound aggregate hydrated with tap and mine water with the content of chloride-ions up to 0.75% of the mass of cement. The strength, elasticity modulus and Poisson’s ratio are calculated in cemented paste backfill with tap and mine water after curing for 28, 60, 90 and 360 days. It is found that the strength, elasticity and deformation characteristics of the test cemented paste backfill made of mine water change similarly to the backfill made of tap water, at deviation of ± 10% and ±4% in terms of strength and deformation, respectively. Chloride-ions contained in mine water have no adverse effect on rheological properties of backfill or hydrated cement, and on dynamics of development of strength in the mixture.
Cemented paste backfill, mixing water, salt mine water, uniaxial compression strength, static elasticity modulus, Poisson’s ratio
DOI: 10.1134/S1062739123030079
REFERENCES
1. Gavrishin, A.I., Formation Patterns of the Chemical Composition of Mine Waters in Eastern Donbas, Doklady Earth Sci., 2018, vol. 481, no. 1, pp. 916–917.
2. Kozlovsky, E.A. (Ed.), Gornaya entsiklopedia (Mining Encyclopedia), Moscow: Sovetskaya Entsiklopediya, 1984–1991.
3. Kulikova, A.A., Sergeeva, T.I., Ovchinnikova, E.I., and Khabarova, Yu.A., Formation of Mine Water Compositions and Analysis of Treatment Methods, Mining Informational and Analytical Bulletin—GIAB, 2020, no. 7, pp. 135–145.
4. Smolyago, G.A., Kryuchkov, A.A., Drokin, S.V., and Dronov, A.V., Studies of Chloride Corrosion in Reinforced Concrete Structures, Vestn. BelGTU im. V.G. Shukhova, 2014, no. 2, pp. 22–24.
5. Leonovich, S.N. and Stepanova, A.V., Modeling Chloride Aggression to High-Quality Concrete to Maintain Design Service Life, Sistemnye tekhnologii, 2016, no. 2 (19), pp. 75–85.
6. Rozental’, N.K., Stepanova, V.F., and Chekhnii, G.V., Maximum Allowable Content of Chlorides in Concrete, Stroit. Mater., 2017, no. 1–2, pp. 82–85.
7. Cullu, M. and Arslan, M., The Effects of Chemical Attacks on Physical and Mechanical Properties of Concrete Produced Under Cold Weather Conditions, Construction and Building Materials, 2014, vol. 5, pp. 53–66.
8. Garibov, R.B. and Ovchinnikov, I.I., Modeling Penetration of Chloride-Bearing Media in Reinforced Concrete Structures, Beton i zhelezobeton, 2010, no. 4, pp. 26–28.
9. Ovchinnikov, I.I., Chen’, T., and Ovchinnikov, I.G., Probabilistic Modeling of Reinforced Concrete Pile Subjected to Joint Influence of Loads and Chloride-Bearing Medium, Regional. Arkhitekt. Stroit., 2016, no. 4(29), pp. 55–61.
10. Kurilko, A.S., Drozdov, A.V., Alekseev, K.N., and Nikiforova, A.D., Impact of Chloride Calcium Brines on Strength of Shotcrete Made of Local Aggregate: A Case-Study of Udachny Mine, Mining Informational and Analytical Bulletin—GIAB, 2014, no. 2, pp. 17–21.
11. Doinikov, Yu.A., Montyanova, A.N., Efimov, A.I., et al, RF patent no. 2396434 Backfill Mixture, 2010.
12. Krupnik, L.A., Shaposhnik, Yu.N., Shaposhnik, S.N., and Tursunbaeva, A.K., Backfilling Technologies in Kazakhstan Mines, Journal of Mining Science, 2013, vol. 49, no. 1, pp. 82–89.
13. Berezikov, E.P., Krupnik, L.A., Shaposhnik, Yu.N., and Shaposhnik, S.N., Diversification of Components in Backfill Manufacture, Gorn. Zh. Kazakhstana, 2009, no. 4, pp. 16–19.
14. Rubashkina, T.I. and Korneichuk, M.A., Cemented Backfill with Low-Grade Natural Sand, Gornyi Zhurnal, 2020, no. 10, pp. 84–90.
15. Rubashkina, T.I. and Korneichuk, M.A., Optimization of Grading of Sand in Backfill Using Metallurgical Waste, Journal of Mining Science, 2020, vol. 56, no. 5, pp. 797–804.
16. Neville, A.M., Properties of Concrete, London: Longman Scientific & Technical, Pitman Publishing, 1981.
SUPPORT AND STABILIZATION OF TEMPORARY ROADWAYS IN EXTRACTION OF COAL MEASURES IN KUZBASS
A. A. Isachenko* and M. G. Koryaga**
Erunakovskaya-8 Mine, Yuzhkuzbassugol, Novokuznetsk, 654006 Russia
*e-mail: metall_kuzbass@mail.ru
Siberian State Industrial University, Novokuznetsk, 654007 Russia
**e-mail: R7080@yandex.ru
It is examined how convergence of roof and floor affects temporary roadways during extraction of coal measures in Kuzbass. The geological and geotechnical factors that can cause deformation in roadways are identified. Roadways are classified in terms of their location relative to a coal seam being mined and a coal seam being overmined in a coal series. The parameters and phases of deformation of rocks are analyzed as primary and secondary convergence of roof and floor rocks in temporary roadways. The primary convergence is observed in temporary roadways located in parallel to the mined-out void and driven in the bottom layer of a thick coal seam being overmined. The secondary convergence takes place in temporary roadways in the abutment pressure zone induced by the earlier mined-out extraction site.
Mine, convergence, floor overcutting, overmined seam, rock pressure
DOI: 10.1134/S1062739123030080
REFERENCES
1. Apal’kova, T.G and Levchenko, K.G., Main trends in the world market of coal in a short term, Ugol’, 2022, no. 11 (1160), pp. 32–37.
2. Vanyakin, O.V., Justification of process flowsheet parameters for closed-space coal seam mining, Theses of Cand. Tech. Sci. Dissertation, Saint-Petersburg: Gornyi universitet, 2016.
3. Egorov, P.V. Krasil’nikov, B.V., Kalinin, S.I., and Zamyshlyaev, V.N., Razrabotka ves’ma sblizhennykh plastov na shakhtakh Kuzbassa (Mining of Very Close-Spaced Coal Seams in Mines in Kuzbass), Prokopievsk: KuzNIUN, 1992.
4. Protod’yakonov, M.M., Davlenie gornykh porod i rudnichnoe kreplenie. Ch. 1, (Rock Pressure and Mine Support. Part 1), Moscow: GIZ, 1931.
5. Yakobi, O., Praktika upravleniya gornym davleniem (Ground Control Practice), Moscow: Nedra, 1987.
6. Knyaz’kov, O.V., Ryabichev, V.D., Spichak, Yu.N., and Paleichuk, N.N., Effect of the mined-out longwall width on convergence in temporary roadways, DonGTU Transactions, 2021, no. 22 (65), pp. 16–20.
7. Tormysheva, O.A., Deev, P.V., Monina, O.S., and Fomin, A.V., Determination of Seismic Effect Parameters from Convergence Measurements at Roadway Boundaries, Fundamentals, Theory, Methods and Means for Measurement, Control and Diagnostic: The 18th International Youth Conference Proceedings, Novocherkassk: Lik LLC, 2017, pp. 48–50.
8. Kurlenya, M.V. and Mirenkov, V.E., Assessment of Deformation of Coal Seam and Longwall through the Identification of Top Coal Caving Parameters, Journal of Mining Science, 2020, vol. 56, no. 4, pp. 505–511.
9. Isachenko, A.A. and Petrova, O.A., Influence of Variability of Geological and Geotechnical Parameters of Shapes and Size of Longwalls and Extraction Panels within the Mine Field Limits, Vestn. SibGIU, 2016, no. 3, pp. 15–18.
10. Isachenko, A.A. and Petrova, T.V., Efficiency of Prevention of Floor Rock Swelling in Drifts in Very Close-Spaced Coal Sean Mining in Measures, Natural and Intelligent Resources in Siberia—Sibresurs 2016: The 16th International Conference Proceedings, Kemerovo: KuzGTU, 2016.
11. Isachenko, A.A., Geomechanical Justification of Ground Control Techniques in Underground Mining of Very Close-Spaced Coal Seams, Cand. Tech. Sci. Dissertation, Kemerovo, 2018.
12. Kazanin, O.I., Sidorenko, A.A., Ermakov, A.Yu., and Vanyakin, O.V., Justification of Parameters for Preparation of Extraction Panels for Longwall Mining in Coal Measures, GIAB, 2014, no. 3, pp. 3–12.
13. Lazarevich, T.I., Mazikin, V.P., Maly, I.A., Kovalev, V.A., Polyakov, A.N., Kharkevich, A.S., and Shabarov, A.N., Geodinamicheskoe raionirovanie Yuzhnogo Kuzbassa (Geodynamic Zoning of Southern Kuzbass), Kemerovo: VNIMI, 2006.
14. Bykadorov, A.I., Larishkin, P.M., and Svirko, S.V. Geotechnical Aspects of Coal Mining Design and Performance Using Hybrid (Open Pit/Underground) Method, Rats. osvoen. nedr, 2014, no. 5–6, pp. 82–92.
SCIENCE OF MINING MACHINES
AERODYNAMIC DESIGN OF AXIAL FAN WITH GUIDE VANE FOR REVERSE AIR FLOW
A. M. Krasyuk* and P. V. Kosykh
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences,
Novosibirsk, 630091 Russia
*e-mail: krasuk@cn.ru
The authors perform the aerodynamic design of axial fans with impeller and inlet guide vane to reverse air flow direction via killing rotation of the impeller while putting the guide vane into rotation. This approach can substantially enhance fan efficiency in reverse mode. The newly developed blade angle analysis procedure allows finding air flow parameters in reversal. The parametric regions in aerodynamic designs of axial fans, where the proposed approach of reversal is effective, are delineated. Design of a fan having similar performance curve in the forward and reverse air flow is undertaken. The swirl ratios of flow in the guide vane are correlated with the axial velocity ratios toward geometrical similarity of blade profiles of impeller and guide vane at an average radius.
Reversible axial fan, aerodynamic design, reversal technique, rotatable guide vane
DOI: 10.1134/S1062739123030092
REFERENCES
1. Krasyuk, A.M., Lugin, I.V., Kosykh, P.V., and Russky, E.Yu., Substantiation of Life Extension Method for Two-Stage Axial Flow Fans for Main Ventilation, Journal of Mining Science, 2019, vol. 55, no. 3, pp. 478–493.
2. Federal’nye normy i pravila v oblasti promyshlennoi bezopasnosti “Pravila bezopasnosti v ugol’nykh shakhtakh (Federal Safety Code: Safety Regulations for Coal Mines), Moscow, series 05, issue 40, 2017.
3. Brusilovsky, I.V., Aerodinamicheskii raschet osevykh ventilyatorov (Aerodynamic Design of Axial Fans), Moscow: Mashinostroenie, 1986.
4. Krasyuk, A.M. and Russky, E.Yu., Optimizing Design of Blades for High-Speed Axial Fans, Journal of Mining Science, 2020, vol. 56, no. 6, pp. 1024–1031.
5. Petrov, N.N, RF patent no. 2439379, Byull. Izobret., 2012, no. 1.
6. Nosyrev, B.A and belov, S.V., Ventilyatornye ustanovki sjakht i metropolitenov (Fan Plants for Mines and Subways), Yekaterinburg: UGGGA, 2000.
7. Levin, E.M., Effektivnost’ reversirovaniya shakhtnykh osevykh ventilyatorov izmeneniem napravleniya vrashcheniya (Reversing Efficiency of Axial Mine Fans by Changing Rotation Direction), Moscow: MIRGE, 1962, pp. 125–135.
8. Brusilovsky, I.V., Aerodinamicheskie skhemy i kharakteristiki osevykh ventilatorov TSAGI (Aerodynamic Configurations and Performance Curves of TSAGI’s Axial Fans), Moscow: Nedra, 1978.
9. Abdolmaleki, M., Afshin, H., and Farhanieh, B., Performance Analysis of Elliptic-Profile Airfoil Cascade for Designing Reversible Axial Flow Fans, AIAA J, 2019. DOI:10.2514/1.J057843.
10. Spasic, Z., Jovanovic, M., and Bogdanovic-Jovanovic, J., Design and Performance Of Low-Pressure Reversible Axial Fan with Doubly Curved Profiles of Blades, J. Mech. Sci. Technol., 2018, vol. 32, no. 8, pp. 3707–3712.
11. Moskovko, Yu.G., Engineering and Design Procedure for Energy-Efficient Axial Fans with Special-Shape Blades, Diss. Cand. Tech. Sci., Saint-Petersburg, 2011.
12. Grekhneva, E.Yu., Aerodynamic Configurations with S-shape Blades of Impellers for Reversible and Nonturnable Blade Axial Fans, Diss. Cand. Tech. Sci., Novosibirsk, 2012.
13. Barnabei, V.F., Castorrini, A., Corsini, A., and Rispoli, F., Morphing of Reversible Axial Fan Blade: A FSI-FEM Study, J. Turbomachinery, 2022, vol. 144, no. 9, 091013.
14. Benisek, M.H., Cantrak, D.S., Ilic, D.B., and Jankovic, N.Z., New Design of the Reversible Jet Fan, Proc., 2020, vol. 8, no. 12, 1671.
15. Bogdanovic, B., Spasic, Z., and Bogdanovic-Jovanovic, J., Low-Pressure Reversible Axial Fan Designed with Different Specific Work of Elementary Stages, Thermal Sci., 2012, vol. 16, suppl. 2, pp. S605–S615.
16. Abbaszadeh, M., Parizi, P.N., and Taheri, R., A Novel Approach to Design Reversible Counter Rotating Propeller Fans, Proc. ASME 2012 Gas Turbine India Conf. GTINDIA 2012-9657, pp. 265–270.
17. Krasyuk, A.M., Lugin, I.V., and Kosykh, P.V., RF patent no. 2726239, Byull. Izobret., 2020, no. 19.
18. Kosykh, P.V. and Krasyuk, A.M., Development of Mine Axial Fans with Increased Performance in Reverse Mode, J. Fundament. Appl. Min. Sci., 2021, vol. 8, no. 1, pp. 230–237.
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SHAPE OF HAMMERS OF HAMMER ROTORS FOR INERTIAL IMPACT FRACTURE
E. G. Kulikova*, S. Ya. Levenson, and A. V. Morozov
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences,
Novosibirsk, 630091 Russia
*e-mail: shevchyk-78@mail.ru; e.kulikova@corp.nstu.ru
Novosibirsk State Technical University, Novosibirsk, 630087 Russia
A brief review of machines for pit wall scaling is given. The inertial impact technique is compared with the surface miner operation. The authors describe an inertial impact machine with a hammer rotor for pit wall scaling. The procedure and data of the numerical and lab-scale testing of the machine are presented. The tests produced the rational range of lip angles for hammer plates and the preferable impact frequency, which ensure the minimized energy intake of the rotor motor and the least counterforce of rock mass to the bearing seat of the rotor at the preserved efficiency of fracture process.
Slope scaling, inertial impact hammer, input current, bearing seat vibration amplitude, breakage efficiency
DOI: 10.1134/S1062739123030109
REFERENCES
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MINERAL DRESSING
MODIFICATION OF PROPERTIES OF HIGH LUMINOUS DIAMONDS WITH LUMINOPHORE-BEARING COMPOSITIONS TOWARDS ENHANCED SELECTIVITY OF X-RAY LUMINESCENCE SEPARATION
V. A. Chanturia, V. V. Morozov, G. P. Dvoichenkova*, and E. L. Chanturia
Academician Melnikov Institute of Comprehensive Development of Mineral Resources—IPKON, Russian Academy of Sciences, Moscow, 111020 Russia
*e-mail: dvoigp@mail.ru
The found interaction mechanism between a mineral–diamond mixture and a modifying agent includes the stage of adhesive attachment of luminophore at grains of diamonds and kimberlite. The selected compositions of modifying agents and the modification process parameters ensure efficient attachment of luminophore-bearing compositions at diamonds. The proposed criterion of selective action of modifying agent on spectral characteristics of diamonds enable choosing modes of recovery of weak and high luminous diamonds from kimberlite ore in X-ray luminescence separation. The rational variation parameters are determined for the organic collector composition, water phase of a modifying agent and for the process of modifying treatment of diamond–kimberlite products before the X-ray luminescence separation. The test of the selected compositions of modifying agents and the diamond-bearing product treatment modes proved almost complete extraction of weak and high luminescence diamonds to concentrate at minimized yield of kimberlite.
Weak and high luminescence diamonds, kimberlite, luminescence property modification, luminophores, modifying agents, interaction mechanism, selectivity criterion
DOI: 10.1134/S1062739123030110
REFERENCES
1. Mironov, V.P., Optical Spectroscopy of Diamonds from Concentrates and Tailings of X-Ray Luminescence Separation, Nauka i Obraz., 2006, no. 1 (41), pp. 31–36.
2. Chanturia, V.A., Morozov, V.V., Dvoichenkova, G.P., and Timofeev, А.S., Substantiation of Luminophore-Bearing Composition for Modifying the Kinetic and Spectral Characteristics of Diamonds in Flow Charts of X-Ray Luminescence Separation, Obogashch. Rud, 2021, no. 4, pp. 27–33.
3. Chanturia, V.A., Dvoichenkova, G.P., Morozov, V.V., Koval’chuk, О.Е., Podkamennyi, Yu.A., and Yakovlev, V.N., Selective Attachment of Luminophore-Bearing Emulsion at Diamonds—Mechanism Analysis and Mode Selection, Journal of Mining Science, 2020, vol. 56, no. 1, pp. 96–103.
4. Zlobin, М.N., Coarse-Grained Flotation Technology in Dressing Diamond-Bearing Ore, Gornyi Zhurnal, 2011, no. 1, pp. 87–89.
5. Melik-Gaikazyan, V.I., Emelyanova, N.P., Kozlov, P.S., Yushina, Т.I., and Lipnaya, Е.N., Studying the Process of Froth Flotation and Selecting Reagents Based on the Mechanism of their Effect. Report 1. Justification of the Selected Research Methods, Obogashch. Rud Tsvet. Metallov, 2009, no. 2, pp. 7–18.
6. Morozov, V.V., Chanturia, V.A., Dvoichenkova, G.P., Chanturia, Е.L., and Podkamennyi, Yu.A., Selecting Organic Collectors for Luminophore-Bearing Modifying Agents to Extract Weakly Fluorescent Diamonds, Journal of Mining Science, 2023, vol. 59, no. 2, pp. 123–133.
7. Morozov, V.V., Chanturia, V.A., Dvoichenkova, G.P., and Chanturia, E.L., Hydrophobic Interactions in the Diamond–Organic Liquid–Inorganic Luminophore System in Modification of Spectral and Kinetic Characteristics of Diamonds, Journal of Mining Science, 2022, vol. 58, no. 2, pp. 257–266.
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23. Morozov, V.V., Kovalenko, Е.G.., Dvoichenkova, G.P., and Chut’-Dy, V.A., Selection of Temperature Regimes for Conditioning and Flotation of Diamond-Bearing Kimberlites by Compound Collectors, Gorn. Nauki i Tekhnologii, 2022, vol. 7, no. 4, pp. 287–297.
EFFECT OF PHYSISORBED COLLECTOR ON INDUCTION TIME AND KINETICS IN FLOTATION OF COAL SLURRIES
S. A. Kondrat’ev* and T. A. Khamzina
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences,
Novosibirsk, 630091 Russia
*e-mail: kondr@misd.ru
Academician Melnikov Institute of Comprehensive Development of Mineral Resources—IPKON, Russian Academy of Sciences, Moscow, 111020 Russia
The literature review discloses preferability of using the time of induction rather than the wetting angle as a criterion of coal floatability. The authors analyze kinetics of coal flotation as function of surface properties of heteropolar collectors relative to the gas–liquid interface. The correlation between the spreading velocity of collectors on water surface and the coal flotation kinetics is determined as a case-study of fat coal slurries. Justification is given for using the time of displacement of the boundary between three states of aggregation as the time of induction. From the correlation of the spreading velocity of a collector, displacement time of the contact line (induction time) and the flotation velocity, it is found that flotation activity of the collector is governed by its properties relative to the gas–liquid interface.
Flotation, coal, collector, induction time, surface activity, collector spreading velocity
DOI: 10.1134/S1062739123030122
REFERENCES
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13. Ye, Y. and Miller, I.D., The Significance of Bubble/Particle Contact Time during Collision in the Analysis of Flotation Phenomena, Int. J. Miner. Process., 1989, vol. 25, pp. 199–219.
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15. Kowalczuk, P.B. and Zawala, J., A Relationship between Time of Three-Phase Contact Formation and Flotation Kinetics of Naturally Hydrophobic Solids, Colloids and Surfaces A: Physicochem. Eng. Aspects., 2016. doi:10.1016/j.colsurfa.2016.07.005.
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18. Khamzina, Т.А. and Kondrat’ev, S.А., Activity of Different Chemistry Agents in Flotation of Difficult Slack Coal, Journal of Mining Science, 2021, vol. 57, no. 4, pp. 645–653.
19. Kondrat’ev, S.А., Selecting Collecting Agents for Flotation, Journal of Mining Science, 2022, vol. 58, no. 5, pp. 796–811.
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SULFIDATION OF OXIDIZED LEAD AND ZINC WITH PYRITE-BEARING LEAD-AND-ZINC ORE
I. G. Antropova, A. A. Merinov, P. A. Gulyashinov, and B. B. Damdinov*
Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences,
Ulan-Ude, 670047 Russia
Dobretsov Geological Institute, Siberian Branch, Russian Academy of Sciences,
Ulan-Ude, 670047 Russia
*e-mail: inan@binm.ru
The article proves the promising nature of joint roasting of rebellious oxidized and sulfide lead-and-zinc ore from Ozerny deposit at the stage of ore preparation for flotation. The joint roasting of lead-and-zinc ore and sulfide ore initiates generation of sulfur-containing agents and sulfidation of rebellious oxidized lead and zinc. It is experimentally proved that selective oxidation of pyrite proceeds together with disintegration of lead and zinc along the interphase boundaries. The main products of such interaction are ZnS, PbS, Fe3O4 and Fe2O3, which can greatly facilitate flotation later on. This method of complex ore processing can potentiate commercialization of oxidized lead-and-zinc ore and rebellious sulfide ore, can prolong service life of mines and mitigate the environmental impact of the industry. The produced samples are analyzed and described using the X-ray phase analysis, differential scanning calorimetry, optical microscopy, chemical analysis, Rietveld refinement and program TOPAS.
Oxidized lead-and-zinc ore, sulfide ore, sulfidation roasting, non-mechanical disintegration, Ozerny deposit
DOI: 10.1134/S1062739123030134
REFERENCES
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12. Aryasuta Nayak, Jena, M.S., et. al., Beneficiation of Lead-Zinc Ores—A Review, Min. Proc. and Extractive Metallurgy Review, 2022, vol. 43, no. 5, pp. 564–583.
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18. Mutevellioglu, N.A. and Yekeler, М., Beneficiation of Oxidized Lead-Zinc Ores by Flotation Using Different Chemicals and Test Conditions, Journal of Mining Science, 2019, vol. 55, no. 2, pp. 327–332.
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29. Omarova, N.К., Sherembaeva, R.Т., and Imashev, А., Flotation of Sulfide Lead-Zinc Ores from Akzhal Deposit, Obogashch. Rud, 2022, no. 2, pp. 25–28.
30. Algebraistova, N.К., Prokop’ev, I.V., and Komarova, Е.S., Preparation of Collective Lead–Zinc Concentrates for Selection Cycle, Tsvet. Metally, 2021, no. 4, pp. 12–17.
31. Zhang, P., Ou, L., et al., MLA-Based Sphalerite Flotation Optimization: Two-Stage Roughing, Powder Technol., 2019, vol. 343, pp. 586–594.
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33. Fedotov, P.К., Senchenko, А.Е., Fedotov, К.V., and Burdonov, А.Е., Studies of Concentratibility of Sulfide and Oxidized Ores from Gold Deposits of the Aldan Shield, Zapiski Gornogo Instituta, 2020, vol. 242, pp. 218–227.
34. Biondi, J.C., Borgo, A., et. al. Structural, Mineralogical, Geochemical and Geochronological Constraints on Ore Genesis of the Gold-Only Tocantinzinho Deposit (Para State, Brazil), Ore Geology Reviews, 2018, vol. 102, pp. 154–194.
35. Myazin, V.P. and Litvintseva, V.I., Searching for New Selective Reagents to Increase the Flotation Efficiency of Lead–Zinc Ores from Novo-Shirokino Deposit, Vestn. ZabGU, 2017, vol. 23, no. 2, pp. 4–15.
STOCHASTIC OPTIMIZATION MODEL SUPPLIES OF FLOTATION MATERIALS
P. Stjepanović, S. Vujić*, M. Trumić, Ž. Praštalo, and M. Kuzmanović
Mining Institute, Belgrade, Serbia
*e-mail: slobodan.vujic@ribeograd.ac.rs
Technical Faculty, University of Belgrade, Bor, Serbia
Faculty of Organizational Sciences, University of Belgrade, Belgrade, Serbia
Consumable supplies in mines (explosives and explosive devices, oil, lubricants, rubber, protective devices, spare parts for machinery and equipment, flotation reagents, etc.) should be sufficient for stable production. However, for mining operations, supplies are burden costs, as storing supplies increases operating costs. The logical question is how to achieve the balance between mine production stability and minimization of costs of supplies, that is, how to optimize supplies. The paper presents a quantitative model of stochastic supplies optimization as a possible answer to this question. The application was demonstrated in the specific case of polymetallic ore lead, zinc, copper, and silver mine flotation with value indicators.
Flotation, supplies, consumables, stochastic optimization
DOI: 10.1134/S1062739123030146
REFERENCES
1. Bosevski, S., Dynamic Models of Production and Consumption Supplies Management in Non-Metallic Mineral Raw Materials Exploitation, Doctoral Thesis, University of Belgrade, Faculty of Mining and Geology, Belgrade, 2010.
2. Vujic, S., Quantitative Models for Decision-Making Support in Mining Planning and Design, Belgrade, Mining Institute, 2023.
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4. Vujic, S., Miljanovic, I., Maksimovic, S., Milutinovic, A., Benovic, T., Hudej, M., Dimitrijevic, B., Cebasek, V., and Gajic, G., Optimal Dynamic Management of Exploitation Life of the Mining Machinery: Models with Undefined Interval, J. Min. Sci., 2010, vol. 46, no. 4, pp. 425–430.
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6. Gorai, A.K. and Chatterjee, S., Optimization Techniques and their Applications to Mine Systems, UK, CRC Press, 2022.
7. Graze, G.М., Upravleniye zapasami v logisticheskikh sistemakh: metodicheskiye ukazaniya po samostoyatel’noy rabote (Inventory Management in Logistics Systems: Guidelines for Independent Work), Chelyabinsk: South Ural State University, 2006.
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18. Stanojevic, R., Dynamic Programming, Economic Institute, Belgrade, 2004.
19. Widodo, L.E., A Review of Soft Computing Application in Mineral Resources Engineering, IOP Conf. Series: Earth Env. Sci., 2018, vol. 212, pp. 1–16.
20. Zhen, S., Determination of Inventory for Mining Production with a Real Options Approach and Comparison with Other Classic Methods, Int. J. Min., Reclamation and Environment, Оnline version, 2016, pp. 346–363.
MINING ECOLOGY AND SUBSOIL MANAGEMENT
MINING INDUSTRY IN THE RUSSIAN FAR EAST: BALANCING THE INTERESTS OF SUBSOIL USE AND THE STATE
I. Yu. Rasskazov*, Yu. A. Arkhipova**, V. G. Kryukov, and A. F. Volkov
Institute of Mining—Detached Division, Federal Research Center, Far East Branch, Russian Academy of Sciences, Khabarovsk, 680000 Russia
*e-mail: adm@igd.khv.ru
**e-mail: yulia_arkhipovas@mail.ru
The authors discuss the mineral resources and mineral reserves of the Russian Far East in terms of their volume and production of certain minerals. The key challenges of subsoil use, which complicate advancement in the mining sector at the present time, are identified. The growth prospects of the mining sector can build on the processing industry and on the transition from mineral extraction to mineral production at high degree of conversion. The economic efficiency of subsoil use depends on the professional corporate management, transportation and power generation infrastructure, sound scientific grounding and on the development of the processing industry which uses products of the mining industry. The main trends of the spatial development in subsoil use are proposed. The large infrastructural projects are described, which can promote social and economic progress in the Far East Federal District of Russia. Emphasis is laid on improvement of personnel potential and on introduction of scientific supervision in the mining and processing industry in the region.
Mineral resources and reserves, mining and processing sector, subsoil use, infrastructural projects
DOI: 10.1134/S1062739123030158
REFERENCES
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4. Arkhipov, G.I., Present-Day Structure of the Mineral Resource Base and Subsoil Use in the Far East Federal District, Geografiya Prirodnye Resursy, 2022, vol. 43, no. 1, pp. 110–120.
5. Kryukov, V.G., Tin Deposits in the South of the Russian Far East: Prospects for Development, Mining, Processing, Mining Informational and Analytical Bulletin–GIAB, 2016, no. S21, pp. 446–461.
6. Rasskazov, I.Yu. and Kryukov, V.G., Mining Industry in the Khabarovsk Territory: Mineral Resource Base and Prospects for Development, Gornyi Zhurnal, 2018, no. 10, pp. 5–12.
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8. Kryukov, V.A. and Kryukov, Ya.V., Approaches to the Development of Mineral Resources in Siberia and the Far East in the Context of Modern Geopolitical Processes, Mineral’nye Resursy Rossii: Ekonomika i Upravlenie, 2023, no. 2, pp. 44–51.
9. Arkhipova, Yu.A. and Bardal’, A.B., Mineral and Raw Material Potential of the Far East Region and Transport Restrictions on Their Development, Geografiya Prirodnye Resursy, 2020, no. 4, pp. 170–179.
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14. Ivanova, N.V., Agglomerations and Clusters as Network Structures for Sustainable Growth of the Regional Economy, Ekonomika. Nalogi. Pravo., 2014, no. 5, pp. 111–116.
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17. Volkov, A.F., The System for Training Qualified Personnel for the Mining Industry on the Example of the Khabarovsk Territory, Regional’nye Problemy, 2022, vol. 25, no. 3, pp. 101–105.
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AUTOMATED PLANNING OF UNDERGROUND MINING OPERATIONS WITH REGARD TO GEOLOGICAL AND GEOTECHNICAL CONSTRAINTS
V. V. Laptev* and K. P. Gurin**
Mining Institute, Kola Science Center, Russian Academy of Sciences, Apatity, 184209 Russia
*e-mail: v.laptev@ksc.ru
**e-mail: k.gurin@ksc.ru
The authors present a multi-factor algorithm for making provisions for geological/geotechnical constraints and operation timing criteria subject to availability of resources. The algorithm enables embracing a variety of possible combinations of heading or stoping conditions at each specific underground mine facility. The algorithm is a part of the digital tool of automated underground mine production planning in geological and mining information system MINEFRAME.
Underground mine production planning, geological and mining information systems, production process flow modeling, resource constraints, mines
DOI: 10.1134/S106273912303016X
REFERENCES
1. Badge, М.N., Ore and Backfill Dilution in Underground Hard Rock Mining, Journal of Mining Science, 2021, vol. 57, no. 6, pp. 995–1005.
2. Lukichev, S.V. (Ed.), Nauchnye i prakticheskie aspekty primeneniya tsifrovykh tekhnologii v gornoi promyshlennosti: monografiya (Scientific and Practical Aspects of Using Digital Technologies in the Mining Industry: Monograph), Apatity: FITs KNTs RAN, 2019.
3. Chaplygin, N.N., Bliznyuk, G.I., Churkin, О.Е., Myznikov, А.V., and Malinovskaya, М.P., Godovoe planirovanie podzemnykh gornykh rabot na EVM. Sb. nauch. tr.: Analiz sistem i upravlenie imi v gornom proizvodstve (Annual Planning of Underground Mining Operations on a Computer. Collection of Scientific Papers: Analysis and Management of Systems in Mining), Apatity: GoI KF AN SSSR, 1988.
4. Churkin, О.Е. and Malinovskaya, М.P., Informatsionnoe obespechenie imitatsionnoi modeli tekhnologii podzemnoi dobychi rudy. Sb. nauch. tr.: Analiz sistem i upravlenie imi v gornom proizvodstve (Information Support of the Simulation Model of Underground Ore Mining Technology. Collection of Scientific Papers: Analysis and Management of Systems in Mining), Apatity: GoI KF AN SSSR, 1988.
5. Chaplygin, N.N., Bliznyuk, G.I., Churkin, О.Е., Myznikov, А.V., and Malinovskaya, М.P., Modeling the Development of Underground Mining Operations, Proc. All-Union Sci. Tech. Conf. on the Theory and Practice of Designing, Constructing and Operating High-Performance Underground Mines, Moscow: MGI, 1990.
6. Belogorodtsev, О.V. and Savin, Е.М., Automated Planning of Underground Mining Operations, Chernaya Metallurgiya. Byull. Nauch. Tekh. Ekon. Inf., 2013, no. 10, pp. 15–19.
7. Lukichev, S.V. and Nagovitsyn, O.V., Digital Transformation of the Mining Industry: Past, Present, and Future, Gornyi Zhurnal, 2020, no. 9, pp. 13–18.
8. Lukichev, S.V., Nagovitsyn, O.V., Il’in, Е.А., and Rudin, R.S., Digital Technologies for Engineering Support of Mining Operations—The First Step towards the Creation of “Smart” Mining Production, Gornyi Zhurnal, 2018, no. 7, pp. 86–90.
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10. Manriquez, F., Perez, J., and Morales, N., A Simulation–Optimization Framework for Short-Term Underground Mine Production Scheduling, Optimization Eng., 2020, no. 21, pp. 939–971.
11. Turtygina, N.А. and Sidorov, D.V., Planning the Quality of Ore-Mineral Raw Materials in the Development of Mining Operations, Nauch. Vestn. Arktiki, 2018, no. 4, pp. 11–17.
12. Stadnik, D.A., Gabaraev, О.Z., Stadnik, N.M., and Tedeev, А.М., Improving the Methodological Foundations of Automated Scheduling of Mining Development when Designing Underground Mining of Ore Deposits, Mining Informational and Analytical Bulletin–GIAB, 2020, no. 11-1, pp. 189–201.
13. Belogorodtsev, О.V., Nagovitsyn, O.V., and Savin, Е.М., Mine Development Planning Module in MINEFRAME Software Package, Mining Informational and Analytical Bulletin–GIAB, 2014, no. 7, pp. 268–272.
14. Andrade, A.B. and Rampazzo, P.C.B., Understanding Plan’s Priorities: Short Term Scheduling Optimization, Application of Computers and Operations Research in the Mineral Industry, Proc. 39th Int. Symp. APCOM, Wroclaw, Poland, 2019.
15. Dimitrakopoulos, R., Stochastic Optimization for Strategic Mine Planning: A Decade of Developments, Journal of Mining Science, 2011, vol. 47, no. 2, pp. 138–150.
16. Nagovitsyn, O.V. and Lukichev, S.V., Gorno-geologicheskie informatsionnye sistemy—istoriya razvitiya i sovremennoe sostoyanie (Mining and Geological Information Systems—History of Development and Current Situation), Apatity: KNTs RAN, 2016.
17. Laptev, V.V. and Zvonareva, S.V., Calculation of Muck Transportation Parameters in Automated Underground Mine Production Planning, Mining Informational and Analytical Bulletin–GIAB, 2022, no. 2, pp. 70–80.
18. Lukichev, S.V., Nagovitsyn, O.V., and Laptev, V.V., Digital Tools for Underground Mine Planning: Cut-and-Fill Mining, Eurasian Min., 2021, no. 1, pp. 75–78.
19. Lukichev, S.V., Nagovitsyn, O.V., and Laptev, V.V., Short- and Medium-Term Planning of Underground Mining Operations, Proc.: Application of Computers and Operations Research in the Minerals Industries, The Southern African Institute of Mining and Metallurgy, Johannesburg, 2021.
FLOODING OF OPEN PIT AND UNDERGROUND MINES IN THE CHELYABINSK COAL FIELD: CONSEQUENCES, PROBLEMS AND SOLUTIONS
L. S. Rybnikova*, P. A. Rybnikov, and A. Yu. Smirnov
Mining Institute, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620075 Russia
*e-mail: luserib@mail.ru
The authors examine the present-day hydrogeological situation and its post-mining phase forecast in the Chelyabinsk Coal Field. Geotechnical facilities in the areas of Krasnaya Gornyachka Mine and Kopeisk and Korkino Open Pit Mines are discussed. The problems to arise during flooding are identified. The hydrological forecasts and an action plan to prevent underflooding in the study areas are presented.
Hydrogeological conditions, geoecological problems, water removing, drainage, flooding, underflooding, coal fields, landslide, leakage, water supply pipes
DOI: 10.1134/S1062739123030171
REFERENCES
1. Moiseenkov, А.V., FSBI GURSH—Twenty Years Later, Ugol’, 2018, no. 2, pp. 36–39.
2. Norvatov, Yu.А. and Petrova, I.B., Metodicheskoe rukovodstvo po prognozu gidrogeologicheskikh uslovii likvidatsii ugol’nykh shakht i obosnovaniyu meropriyatiy, obespechivayushchikh predotvrashcheniye negativnykh ekologicheskikh posledstviy (Methodological Guidance on the Forecast of Hydrogeological Conditions for the Liquidation of Coal Mines and Justification of Measures to Prevent Negative Environmental Consequences), Saint Petersburg: VNIMI, 2008.
3. Wolkersdorfer, C., Walter, S., and Mugova, E., Perceptions on Mine Water and Mine Flooding—An Example from Abandoned West German Hard Coal Mining Regions, Resources Policy, 2022, vol. 79, p. 103035.
4. Kretschmann, J., Post-Mining—A Holistic Approach, Mining, Metallurgy and Exploration, 2020, vol. 37, pp. 1401–1409.
5. Stemke, M. and Wieber, G., Closure of German Hard Coal Mines: Effects and Legal Aspects of Mine Flooding, Mine Water Env., 2022, vol. 41, pp. 280–291.
6. Guman, О.М., Petrova, I.G., and Lapin, S.E., Features of Environmental Monitoring near Coal Mines (on the Example of Tsentralnaya Mine in Kopeisk District of Chelyabinsk Coal Field), Geolog. Geofiz., 2001, no. 13, pp. 223–227.
7. Imaikin, А.К. and Imaikin, К.К., Gidrogeologicheskie usloviya Kizelovskogo ugol'nogo basseina vo vremya i posle okonchaniya ego ekspluatatsii, prognoz ikh izmenenii (Hydrogeological Conditions of Kizelovsky Coal Field during and after the End of its Operation, Forecast of Changes), Perm: PGNIU, 2013.
8. Langolf, E.L., Ludzish, V.S., Lazarevich, Т.I., and Polyakov, А.N., Actual Problems of Development of Mining Lease Areas after the Flooding of Mines in Kuzbass, Marksheid. Vestn., 2007, no. 4, pp. 45–48.
9. Rybnikov, P.А., Rybnikova, L.S., Maksimovich, N.G., and Demenev, А.D., Investigation of the Hydrogeological Conditions of Coal Deposits at the Post-Mining Stage Using Hydrodynamic Modeling (on the Example of Kizelovsky Coal Field, Western Urals, Russia), Mining Informational and Analytical Bulletin–GIAB, 2020, no. 3.1, pp. 488–500.
10. Rybnikova, L.S., and Rybnikov, P.А., Regularities of the Formation of Groundwater Quality in Mined-Out Copper Pyrite Mines of Levikha Ore Field (Middle Urals, Russia), Geokhimiya, 2019, vol. 64, no. 3, pp. 282–299.
11. Dominique, P., Aochi, H., and Morel, J., Triggered Seismicity in a Flooded Former Coal Mining Basin (Gardanne Area, France), Mine Water Environ, 2022, vol. 41, pp. 317–334.
12. Morin, S.V. and Barsukov, I.V., Problems of Assessing Movements and Deformations of the Earth's Surface in Previously Undermined Areas of Coal Mines, Sb. Nauch. Tr. VNIMI, Saint Petersburg, 2012.
13. Rybnikova, L.S., and Rybnikov, P.А., Hydrogeological Research in Mining at the Post-Mining Stage, Geoekologiya. Inzhenernaya Geologiya. Gidrogeologiya. Geokriologiya, 2018, no. 4, pp. 25–39.
14. Wolkersdorfer, C., Water Management at Abandoned Flooded Underground Mines. Fundamentals, Tracer Tests. Modeling, Water Treatment, Springer, Berlin, 2008.
15. Younger, P.L., Jenkins, D.A., Rees, B., Robinson, J., Jarvis, A.P., Ralph, J., Johnston, D.N., and Coulton, R.H., Mine Waters in Wales: Pollution, Risk Management and Remediation, Urban Geology in Wales, National Museums and Galleries of Wales Geological Series, 2004, no. 23, pp. 138–154.
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17. Anderson, M.P., Woessner, W.W., and Hunt, R.J., Applied Groundwater Modeling Simulation of Flow and Advective Transport, Academic Press, 2015.
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20. Sokolovskiy, А.V., Lapaev, V.N., Temnikova, М.S., and Gordeev, А.I., Engineering Features of Liquidation of Korkino Open Pit Mine, Ugol’, 2018, no. 3, pp. 91–95.
INVESTIGATION OF PROPERTIES OF DOMESTIC BINDERS FOR DUST SUPPRESSION AT TAILINGS STORAGE FACILITIES
E. A. Krasavtseva*, D. V. Makarov, and A. V. Svetlov
Laboratory for Nature-Like Technologies and Technosphere Safety in the Arctic,
Kola Science Center, Russian Academy of Sciences, Apatity, 184209 Russia
*e-mail: vandeleur2012@yandex.ru
Institute of North Industrial Ecology Problems, Kola Science Center, Russian Academy of Sciences,
Apatity, 184209 Russia
The article presents the case-study of properties of domestic binders in dust suppression at tailing storage facilities at a mining and processing plant in the Murmansk Region. The strength development dynamics of the binder-formed blankets and the change in the strength in the wetting–drying mode are determined, the impact of chemical agents on water permeability of treated tailings is estimated, and leaching of polymerized concentrates in weakly acid and alkaline media is carried out. The authors emphasize essentiality of an integrated research for the well-founded choice of a binder.
Tailings, dusting, dust suppression, binders, tailing storage facilities
DOI: 10.1134/S1062739123030183
REFERENCES
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THE ASSESSMENT OF BLAST-INDUCED DUST IN AN URBAN SITE QUARRY
Ulku Kalayci Sahinoglu
Istanbul University–Cerrahpasa, Istanbul, Turkiye
e-mail: ukalayci@iuc.edu.tr
In the study, the particulate matter (PM) measurements were carried out during several blasting operations using a portable Cascade Impactor with eight particle size fractions. The particle mass size distribution was characterized for each blast shot. The PM dispersion trend equations were established for using the measurements collected from various distances in the downwind direction and classified for different fractions (respirable, thoracic, and inhalable) to assess the health risks. As an outcome of the study, the amount of dust generated in the blasting source was specified according to the blasting theory. The PM dispersion trends were established by evaluating measurement results. It was concluded that, PM decreases from gram to milligram grades in the first 100 m distance. All of the PM fractions ultimately settles at an approximate distance of 535 m and not spread out of the quarry pit. Regarding particle mass size distribution studies, blast-induced PM is classified as fine particles. The study has preceded features regarding both PM sampling during a blasting event and revealing PM fractions close to the blasting point. The context also provides a detailed comparison of the amount and characteristics of dust caused by blasting with other activities.
Blasting, dust emission, mining, particle size distribution
DOI: 10.1134/S1062739123030195
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NEW METHODS AND INSTRUMENTS IN MINING
ACOUSTIC CHARACTERISTICS OF ROCK SAMPLES UNDER NEGATIVE TEMPERATURES
V. I. Vostrikov*, P. A. Tsoi, and O. M. Usol’tseva
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences,
Novosibirsk, 630091 Russia
*e-mail: vvi.49@mail.ru
The authors investigate geophysical parameters of water-saturated and frozen rock samples, and compare the results with the data of natural rocks. The samples were subjected to dynamic loading, an acceleration signal was recorded and a spectral density was calculated. On this basis, later on, the authors determined the longitudinal vibration velocity, the logarithmic decrement of damping, the internal friction factor and the acoustic Q-factor. The water-saturated and frozen rock samples demonstrated the increased velocities of longitudinal vibrations. The samples, which had the high acoustic Q-factors in the frozen conditions, fractured under much higher loads. The degree of water saturation affected the strength of the test samples: their strength reduced with the higher water saturation. Freezing of the samples generated microseismic vibrations in the region of high frequencies. In the uniaxial compression tests to failure of the samples under critical loading, a high frequency signal was recorded during initiation of an extension fracture, and the signal spectrum shifted toward lower frequencies as the fracture grew.
Rock sample, water saturation, freezing, fracturing, microseismic emission, acceleration, spectral density, acoustic Q-factor, internal friction factor, damping
DOI: 10.1134/S1062739123030201
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