JMS, Vol. 57, No. 2, 2021
GEOMECHANICS
PROPAGATION OF SHOCK PULSE ALONG. A. PIPE DURING VERTICAL PENETRATION IN SOIL
A. L. Isakov* and A. S. Kondratenko**
Siberian Transport University, Novosibirsk, 630049 Russia
*e-mail: mylab@ngs.ru
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
**e-mail: kondratenko@misd.ru
The mathematical model of vertical penetration of a steel pipe in soil with a shock pulse generator is described. The influence of the external problem parameters on the attenuation of the shock pulse propagating along the pipe is described, and the process generalities are found. The attenuation law of the mass velocity amplitude in the shock pulse along the pipe during vertical penetration in soil is revealed.
Pipe penetration, shock impulse, mathematical model, dry friction, pulse attenuation
DOI: 10.1134/S1062739121020010
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ANALYSIS OF GROUND SURFACE DISPLACEMENTS UNDER THE INFLUENCE OF REPEATED MINING ACTIVITIES IN THE ZHEZKAZGAN AREA
N. F. Nizametdinov*, V. D. Baryshnikov**, R. F. Nizametdinov, M. B. Igemberlina***, H. Stankova****, and Zh. M. Batyrshaeva
Karaganda Technical University, Karaganda, 100000 Kazakhstan
*e-mail: mdig_kstu@mail.ru
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences,
Novosibirsk, 630091 Russia
**e-mail: v-baryshnikov@yandex.ru
Al-Farabi Kazakh National University, Almaty, 050040 Kazakhstan
***e-mail: igemberlina@mail.ru
Technical University of Ostrava, Ostrava-Poruba, 708 00 Czech Republic
****e-mail: hana.stankova@vsb.cz
The authors study the ground surface displacement in the area of Zhezkazgan copper ore field now subjected to extraction of ore reserves from rib pillars. The high-precision leveling procedure using digital leveling instrumentation and invar leveling staffs is proposed for the application in arrangement of a geodynamic test site at the settlements of Zhezkazgan and Lermontovo. The steel control survey points are firmly connected with rock mass by means of grouting. The observation results made it possible to detect and evaluate the ground surface displacements.
Ground surface displacement, observation station, survey profile, control survey point, geometric leveling, invar leveling staff, subsidence
DOI: 10.1134/S1062739121020022
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STIMULATION OF CAPILLARY IMBIBITION IN OIL RESERVOIR TREATMENT
D. S. Evstigneev
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
e-mail: rdx0503@gmail.com
The author proposes a problem formulation for the capillary rise process when one of the capillary ends is connected to the atmosphere and the other end is put in a liquid-filled tank with walls subjected to vibrations. The calculations show that pressure surges essentially reduce the time of capillary imbibition. Given no vibration in the liquid flow from the tank to the capillary, the water rise height found from the numerical solution of the formulated problem coincides with the calculation from the Lucas–Washburn equation and agrees with the test data. The generalization algorithm for the problem to be applicable to capillary imbibition in porous media saturated with immiscible liquids is presented.
Capillary imbibition, pressure surges, two-phase flow, vibration treatment
DOI: 10.1134/S1062739121020034
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AN ANALYTICAL SOLUTION FOR ANALYSIS OF BLOCK TOPPLING FAILURE USING APPROACH OF FICTITIOUS HORIZONTAL ACCELERATION
Hassan Sarfaraz
School of Mining Engineering, College of Engineering, University of Tehran, Iran
e-mail: sarfaraz@ut.ac.ir
In this research, firstly, the literature review of the most kinds of toppling failure is presented, and then using the fictitious horizontal acceleration technique, an analytical approach is proposed for the stability analysis of block toppling failure. This method is compared with the Goodman–Bray method through a typical example. The results of the methods have an acceptable agreement.
Rock slopes, block toppling failure, theoretical solution, safety factor
DOI: 10.1134/S1062739121020046
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13. Sarfaraz, H., Khosravi, M.H., and Amini, M., Numerical Analysis of Slide-Head-Toppling Failure, J. Min. Enviroment, 2019, vol. 10, no. 4, pp. 1001–1011.
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ROCK FAILURE
PREDICTION AND ACTUAL OVERSIZED/UNDERSIZED FRAGMENTATION IN UNDERGROUND BLASTING
S. A. Vokhmin*, A. A. Kytmanov, G. P. Erlykov, E. V. Shevnina, G. S. Kurchin, and A. K. Kirsanov
Siberian Federal University, Krasnoyarsk, 660041 Russia
*e-mail: svokhmin@mail.ru
Mayak Mine, NorNickel’s Polar Division, Norilsk, 663333 Russia
The blasting experience in Zapolyarny Mine is described, and the actual oversized/undersized fragmentation of blasting from haulage drift is presented. The drilling-and-blasting pattern parameters provide insufficient fragmentation quality, which elevates the blasting cost and reduces its efficiency. It is shown that the actual oversized/undersized fragmentation agrees with the Kuz–Ram fragmentation model. This allows adjusting the calculation parameters of uniformity index for the prediction and optimization of grain-size composition in broken muck. Possible causes of oversized/undersized fragmentation are discussed.
Rock fracture, grain-size composition, fragmentation, chamber, drilling-and-blasting, blasthole, explosive charge, blast, oversize/undersize, statistical processing
DOI: 10.1134/S1062739121020058
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THE INFLUENCE OF GEOTECHNICAL PARAMETERS ON SINKHOLE SUBSIDENCE AND ITS MODEL DEVELOPMENT FOR UNDERGROUND COAL MINES IN CENTRAL INDIA
P. Sahu, R. D. Lokhande*, M. Pradhan, and R. Jade
National Institute of Technology, Raipur, Chhattisgarh, 492010 India
Visvesvaraya National Institute of Technology, Nagpur, 440010 India
*e-mail: riteshlokhande@gmail.com
Excavations in shallow depth and the presence of weak overlying rock may disturb the strata conditions due to which caving start and creates a cavity in the subsurface and finally sinkhole. In central India, the sinkhole phenomenon is common in some of the coal mines and its urgent need to understand the influence of critical parameters that directly or indirectly aggravates the sinkholes. Seeing the potential damages against its occurrence, the field investigation were planned and implemented in some of the coal mines at Central India. Based on the field investigations, the detailed parametric analysis was done with respect to sinkhole depth against each critical parameter. A sinkhole model has been developed by using statistical approach to understand the collective influence of all critical parameters.
Underground coal mining, shallow cover, critical parameters, sinkhole
DOI: 10.1134/S106273912102006X
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ANALYSIS OF THE CAUSES OF THE SINKHOLE WITHIN THE MINING AREA OF THE FORMER MINE
P. Litwa
Central Mining Institute (GIG), Katowice, 40–166 Poland
e-mail: plitwa@gig.eu
The paper presents a case of a sinkhole located in a hard coal mine within the Upper Silesian Coal Basin in Poland and attempts to explain the causes of its formation. The calculations and analysis of geological and mining conditions carried out within the area of the sinkhole allowed to formulate conclusions that can support the decision-making process related to construction investments and environmental protection in the area of the decommissioned mine.
Sinkholes, noncontinuous deformation in mining and post-mining areas
DOI: 10.1134/S1062739121020071
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MINERAL MINING TECHNOLOGY
OPTIMIZATION OF OPEN PIT GOLD MINE DESIGN CAPACITY USING LAG MODELING APPROACH
A. A. Ordin* and I. V. Vasil’ev
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences,
Novosibirsk, 630091 Russia
*e-mail: ordin@misd.ru
Federal Research Center for Information and Computational Technologies, Novosibirsk, 630090 Russia
VostNII Research Center, Kemerovo, 650002 Russia
Sibgiproshakht, Novosibirsk, 630132 Russia
The theory of the lag modeling approach to optimizing design capacity of an open pit gold mine by the criterion of maximized integrated economic performance over the mine life is given. The geology of Brekchia gold field in the Altai Krai is described, and the open pit mine design is shown. The optimization results on the open pit mine design capacity by the integral criterion of maximum economic indices using the lag modeling approach are given. The influence of the market prices of gold on the optimized design capacity of the open pit mine is analyzed.
Open pit mine, ore, proven reserves, gold, lag modeling, optimization, design capacity, discounting, integral criterion
DOI: 10.1134/S1062739121020083
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24. Ordin, A.A. and Vasil’ev, I.V., Optimized Depth of Transition from Open Pit to Underground Coal Mining, Journal of Mining Science, 2014, vol. 50, no. 4, pp. 696–706.
25. Kaputin, Yu.E., Informatsionnye tekhnologii planirovaniya gornykh rabot (Information Technologies in Mine Planning), Saint-Petersburg: Nedra, 2004.
26. Kosov, V.V., Livshits, V.N., and Shakhnazarov, A.G., Metodicheskie rekomendatsii po otsenke effektivnosti investistionnykh proektov (Instructional Guidelines on Investment Project Evaluation, Moscow: Ekonomika, 2000.
DRAINAGE EFFICIENCY ENHANCEMENT FOR WATERED SLUDGE IN AIKHAL OPEN PIT MINE
L. A. Elantseva* and S. V. Fomenko**
Belgorod State University, Belgorod, 308015 Russia
*e-mail: Elantseva@bsu.edu.ru
**e-mail: SVFomenko@rambler.ru
The authors address the problem connected with gradual rise of sludge level in Aikhal open pit mine. It is found that sludge level has been rising gradually in the course of underground mining under the safety crown meant to prevent inrush of watered mud from the open pit bottom to the underground excavations. The promising approaches to steadying of watered sludge to ensure safe and convenient underground mining are developed.
Aikhal open pit mine, sludge, steadying, drainage activities, water removal, hard rock cushion, mechanical support, freezing
DOI: 10.1134/S1062739121020095
REFERENCES
1. Drozdov, A.V., Iost, N.A., and Lobanov V. V., Kriogidrogeologiya almaznykh mestorozhdenii Zapadnoi Yakutii (Cryo-Hydro-Geology of Diamond Fields in Western Yakutia), Irkutsk: IrGTU, 2008.
2. Borshch-Komponiets, V.I. and Makarov, A.B., Gornoe davlenie pri otrabotke moshchnykh pologikh rudnykh zalezhei (Lithostatic Pressure in Mining Thick and Gently Dipping Ore Bodies), Moscow: Nedra, 1986.
3. Kalmykov, V.P., Bor’ba s vnezapnym proryvom vody v gornye vyrabotki (Combating Water Inrushes in Mines), Moscow: Nedra, 1973.
4. Kolganov, V.F., Akishev, A.N., and Drozdov, A.V., Gorno-geologicheskie osobennosti korennykh mestorozhdenii almazov Yakutii (Geological Features of Diamond Deposits in Yakutia), Mirny: Yakutniproalmaz, 2013.
5. Baryshnikov, V.D., Baryshnikov, D. V., and Khmelinin, A.P., Experimental Estimation of the Mechanical Condition of Reinforced Concrete Lining in Underground Excavations, Proc. of XIV Int. Multidisciplinary Scientific GeoConference (SGEM), Albena, Bulgaria, 2014.
6. Baryshnikov, V.D., Gakhova, L.N., Filatov, A.P., Cherepnov, N.A., Geomechanical Validation of Bottom-Upward Extraction of Ore Reserves under Aikhal Open Pit, GIAB, 2007, no. 15, pp. 119–129.
7. Baryshnikov, V.D. and Gakhova, L.N., Geomechanical Substantiation of Access Roads and Stope Faces in Upward Mining of the Reserves Subjacent the Open Pit Bottom in Terms of the Mine Aikhal, Journal of Mining Science, 2008, vol. 44, no. 2, pp. 155–162.
8. Baryshnikov, V.D., Baryshnikov, D.V., and Khmelinin, A.P., Experimental Determination of Stresses in Enclosing Rock Mass of Aikhal Mine, ALROSA, Interexpo-GeoSibir Conference Proceedings, 2018, vol. 5, pp. 265–271.
9. Kovalenko, A.A., Tishkov, M.V., Neverov, S.A., Neverov, A.A., and Nikolsky, A.M., Mining Technology for Mineral Reserves Remaining below Open Pit Bottom under Difficult Ground Conditions, J. Fundament. Appl. Min. Sci., 2016, vol. 1, no. 3, pp. 305–311.
10. Markov, V.S., Pavlov, A.A., Petrova, L.V., and Skryabin, E.P., Slice Mining at Larger-Size Parameters in Aikhal Mine, GIAB, 2013, no. 8, pp. 373–378.
11. Nikolsky, A.M., Substantiation of Underground Mining Technologies for Diamond Deposits in Yakutia, Doctor of Engineering Sciences Dissertation, Novosibirsk, 2019.
12. Petrov, A.N and Akimov, D.D., Improvement of Slice Mining System for Kimberlite Deposits, GIAB, 2013, no. 8, pp. 384–392.
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SCIENCE OF MINING MACHINES
INFLUENCE OF BODY DIMENSION AND MATERIAL ON PULL STRENGTH OF SHELL-TYPE SOLENOID ELECTROMAGNETS IN ELECTROMAGNETIC HAMMERS
B. F. Simonov*, V. Yu. Neiman**, and A. O. Kordubailo
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences,
Novosibirsk, 630091 Russia *e-mail: Simonov_BF@mail.ru
Novosibirsk State Technical University, Novosibirsk, 630073 Russia
**e-mail: nv.nstu@ngs.ru
The study analyzes the influence exerted by the body, guide and their materials on the pull strength of electromagnets in electromagnetic hammers. The pull strengths of electromagnets without positive and negative poles are evaluated.
Electromagnetic hammer, coil, current, magnetic gap, guide, piston, body, pole
DOI: 10.1134/S1062739121020101
REFERENCES
1. Ivashin, V.V., Kudinov, V.P., and Pevchev, A.K., Electromagnetic Actuators for Pulse and Vibropulse Technologies, Izv. Vuzov. Elektromekhanika, 2012, no. 1, pp. 72–75.
2. Manzhosov, V.K., Lukutina, N.O., and Nevenchannaya, T.O., Dinamika i sintez elektromagnitnykh generatorov silovykh impul’sov (Dynamics and Synthesis of Electromagnetic Power Pulse Generators), Frunze: Ilim, 1985.
3. Pevchev, V.P. and Ivashin, V.V., Proektirovanie moshchnykh korotkokhodovykh impul’snykh elektromagnitnykh dvigatelei (Designing Powerful Short-Stroke Pulse Electromagnetic Motors), Tolyatti: TGU, 2012.
4. Ugarov, G.G. and Moshkin, V.I., Prospects for the Development of Power Electromagnetic Pulse Systems, Vestn. KGU, Ser. Tekhn. Nauki, 2013, no. 2, pp. 88–90.
5. Ryashentsev, N.P. and Ryashentsev, V.N., Elektromagnitnyi privod lineinykh mashin (Electromagnetic Actuator of Linear Machines), Novosibirsk: Nauka, 1985.
6. Malov, A.T., Ryashentsev, N.P., Malakhov, A.P., Antonov, A.N., and Nosovets, A.V., Elektromagnitnye moloty (Electromagnetic Hammers), Novosibirsk: Nauka, 1968.
7. Ryashentsev, N.P., Ugarov, G.G., L’vitsyn, A.V., Elektromagnitnye pressy (Electromagnetic Presses), Novosibirsk: Nauka, 1989.
8. Simonov, B.F., Kadyshev, A.I., Neiman, V.Yu., Study of Static Parameters of Long-Stroke Electromagnets for Hammers, Transport: Nauka, tekhnika, upravlenie, 2011, no. 12, pp. 30–32.
9. Simonov, B.F., Neiman, V.Yu., and Shabanov, A.S., Pulsed Linear Solenoid Actuator for Deep-Well Vibration Source, J. Min. Sci, 2017, vol. 53, no. 1, pp. 117–125.
10. Simonov, B.F. and Kadyshev, A.I., Effect of Structural Components on the Static Draw Characteristics of DC Electromagnets, J. Min. Sci, 1987, vol. 23, no. 6, pp. 521–526.
11. Ryashentsev, N.P., Simonov, B.F., and Kadyshev, A.I., Investigation of the Influence of Design Factors on Operating Processes of an Electromagnetic Hammer, Izv. SO AN SSSR, Ser. Tekhn. Nauki, 1988, iss. 3, no. 11, pp. 73–85.
12. Bul’, O.B., Metody rascheta magnitnykh sistem elektricheskikh apparatov: magnitnye tsepi, polya i programma FEMM (Methods for Calculating the Magnetic Systems of Electrical Devices: Magnetic Circuits, Fields and the FEMM Software), Moscow: Akademiya, 2005.
13. Neiman, L.A., Petrova, A.A., and Neiman, V.Yu., To the Assessment of Selecting the Type of Electromagnet by the Value of Design Factor, Izv. Vuzov. Elektromekhanika, 2012, no. 6, pp. 62–64.
INVESTIGATION OF THE RELATIONSHIP BETWEEN SPEED AND IMAGE QUALITY OF AUTONOMOUS VEHICLES
Li Xin, Kan Yuting, and Shang Tao*
School of Mines, China University of Mining and Technology, Xuzhou, 221116 China
*e-mail: 147782929@qq.com
In order to ensure the safety of the autopilot system, this article analyzes the causes of motion blur from the perspective of camera imaging principles and uses the relationship between the coordinate systems to determine the position of a certain point in the three-dimensional space in the pixel coordinate system. Finally, the degree of motion blur is determined by calculating the displacement of the pixel points per unit time and assigning weights to them using a Gaussian function. The results show that the degree of motion blur increases from the center of the image to the sides, and it is positively correlated with the motion speed in general. This is used to determine the critical speed of safe driving, providing a way to improve the safety of the open-pit mining autopilot system further.
Open-pit mine, autonomous vehicles, motion blur, motion speed
DOI: 10.1134/S1062739121020113
REFERENCES
1. Saayman, P., Craig, I.K., and Camisani-Calzolari, E., Optimization of an autonomous Vehicle Dispatch System in an Underground Mine, J. South African Inst. Min. Metall., 2006, vol. 106(2), pp. 77–86.
2. Xu, Z., Yang, W., You, K., Li, W., and Kim, Y., Vehicle Autonomous Localization in Local Area of Coal Mine Tunnel Based on Vision Sensors and Ultrasonic Sensors, PLOS ONE, 2017, vol. 12(1): e0171012. Available at: https://doi.org/10.1371/journal.pone.0171012.
3. Boulter, A. and Hall, R., Wireless Network Requirements for the Successful Implementation of Automation and Other Innovative Technologies in Open-Pit Mining, Int. J. Min. Reclam. Environ., 2015, vol. 29(5SI), pp. 368–379. Available at: https://doi.org/10.1371/journal.pone.0171012.
4. Swart, C., Miller, F., Corbell, P. A., Falmagne, V., and St-Arnaud, Vehicle Automation in Production Environments, J. South. African Inst. Min. Metall., 2002, vol. 102(3), pp. 139–144. Available at: https://hdl.handle.net/10520/AJA0038223X_2658.
5. Golushko, S.K., Cheido, G.P., Shakirov, R.A., Shakirov, S.R., and Shevchenko, D.O., Multi-Functional Mine Shaft Alarm System, J. Min. Sci., 2018, vol. 54(1), pp. 173–179.
6. Reina, G., Underwood, J., Brooker, G., and Durrant-Whyte, H., Radar-Based Perception for Autonomous Outdoor Vehicles, J. Field. Robot., 2011, vol. 28(6), pp. 894–913.
7. Zang, S., Ding, M., Smith, D., Tyler, P., Rakotoarivelo, T., and Ali Kaafar,M., The Impact of Adverse Weather Conditions on Autonomous Vehicles: Examining How Rain, Snow, Fog, and Hail Affect the Performance of A Self-Driving Car, IEEE Vehic. Technol. Mag., 2019, vol. 14, pp. 103–111, 10.1109/MVT.2019.2892497.
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14. Qiu, J., Design and Construction of Open-Pit Mine Roads, Min. Technol., 2012, vol. 12(03), pp. 42–46.
MINERAL DRESSING
COARSENESS OF PARTICLES IN FLOTATION IN IMPELLER-TYPE CELLS
S. A. Kondrat’ev* and K. A. Kovalenko
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences,
Novosibirsk, 630091 Russia
*e-mail: kondr@misd.ru
The study focuses on stability of particle–bubble attachment versus the size of particles attached to bubbles, design of a flotation cell and the input energy. The main force to tear away a particle from a bubble is assumed to be the inertia force conditioned by undulation of the gas–liquid interface. It is examined how the bubble surface oscillations influence detachment of particles. The oscillation amplitude is a function of the energy dissipation rate. The energy dissipation rate is determined using the methods of computational hydrodynamics in Ansys Fluent. The calculated sizes of particles produced in frother flotation with regard to coalescence in the froth bed agree with the existing and new experimental data.
Flotation, particle size, detachment model, energy dissipation
DOI: 10.1134/S1062739121020125
REFERENCES
1. Tabosa, E., Runge, K., and Duffy, K.A., Strategies for Increasing Coarse Particle Flotation in Conventional Flotation Cells, Proc. the 6th Int. Flotation Conf., Cape Town, South Africa, 2013.
2. Yoon, R.H., Kelley, K., Do, H., Sherrell, I., Noble, A., Kelles, S., and Soni, G., Development of a Flotation Simulator Based on a First Principles Model, Proc. XXVI Int. Miner. Process. Congress (IMPC 2012), New Delhi, India, 2012.
3. Muganda, S., Zanin, M., and Grano, S.R., Influence of Particle Size and Contact Angle on the Flotation of Chalcopyrite in a Laboratory Batch Flotation Cell, Int. J. Miner. Process., 2011, vol. 98, nos. 3–4, pp. 150–162.
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6. Maksimov, I.I. and Emel’yanov, M.F., Influence of Turbulence on Detachment of Particles from Bubbles in Flotation Slurry, Obogashch. Rud, 1983, no. 2, pp. 16–19.
7. Koh, P. T. L. and Schwarz, M.P., CFD Modelling of Bubble–Particle Attachments in Flotation Cells, Miner. Eng., 2006, vol. 19, pp. 619–626.
8. Bloom, F. and Heindel, T., On the Structure of Collision and Detachment Frequencies in Flotation Models, Chem. Eng. Sci., 2002, vol. 57, pp. 2467–2473.
9. Pyke, B., Fornasiero, D., and Ralston, J., Bubble Particle Heterocoagulation under Turbulent Conditions, J. of Colloid and Interface Sci., 2003, vol. 265, pp. 141–151.
10. Nguyen, A., New Method and Equations for Determining Attachment Tenacity and Particle Size Limit in Flotation, Int. J. of Miner. Process., 2003, vol. 68, pp. 167–182.
11. Goel, S. and Jameson, G.J., Detachment of Particles from Bubbles in an Agitated Vessel, Miner. Eng., 2012, vols. 36–38, pp. 324–330.
12. Xu, D., Ametov, I., and Grano, S.R., Detachment of Coarse Particles from Oscillating Bubbles. The Effect of Particle Contact Angle, Shape and Medium Viscosity, Int. J. of Miner. Process., 2011, vol. 101, no. 1/4, pp. 50–57.
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15. Kondrat’ev S.A. and Izotov, A.S., Interaction of a Gas–Liquid Phase Interface with a Mineral Particle, J. Min. Sci., 1999, vol. 35, no. 4, pp. 439–444.
16. Stevenson, P., Ata, S., and Evans, G.M., The Behavior of an Oscillating Particle Attached to a Gas-Liquid Surface, Ind. Eng. Chem. Res., 2009, vol. 48, pp. 8024–8029.
17. Kondrat’ev, S.A. and Moshkin, N.P., Particle-Free Air Bubble Interaction in Liquid, J. Min. Sci., 2020, vol. 56, no. 6, pp. 990–999.
18. Tabosa, E., Runge, K., and Holtham, P., Development and Application of a Technique for Evaluating Turbulence in a Flotation Cell, Proc. XXVI Int. Miner. Proc. Congress (IMPC 2012), New Delhi, India, 2012.
19. Xie, W., Meng, J., and Nguyen, A.V., Experimental Quantification of Turbulence and Applications in the Study of Multiphase Flotation Pulps, Int. J. of Miner. Process., 2016, vol. 156, pp. 87–98.
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THE MECHANISM AND PARAMETERS OF FROTH FLOTATION STIMULATION FOR DIAMOND-BEARING MATERIALS BY THERMAL AND ELECTROCHEMICAL EFFECTS
V. V. Morozov*, G. P. Dvoichenkova**, E. G. Kovalenko***, E. L. Chanturia, and E. N. Chernysheva
National University of Science and Technology—MISIS, Moscow, 117049 Russia
*e-mail: dchmggu@mail.ru
Academician Melnikov Research Institute of Comprehensive Exploitation of Mineral Resources—IPKON, Russian Academy of Sciences, Moscow, 111020 Russia
**e-mail: dvoigp@mail.ru
Yakutniproalmaz Institute, ALROSA, Mirny, 678194 Russia
***e-mail: kovalenkoeg@alrosa.ru
Mirny Polytechnic Institute—Branch of the Ammosov North-Eastern Federal University,
Mirny, 678174 Russia
Coralina Engineering, Moscow, 105005 Russia
The thermodynamic analysis and tests of minerogenesis under higher temperatures determine conditions of thermochemical decomposition of hydrophilic attachments on diamond surface. It is found that hydrophilic mineral attachments can be removed from diamond surface by combining thermal treatment of slurry at the temperature of 80–85 °C with electrochemical treatment of recirculated water, which enables required change in ion–molecule composition of water phase in the slurry. The hybrid conditioning technology ensures recovery of the natural hydrophobic behavior and floatability of diamonds and enhances performance of froth flotation of diamonds by 5.1%.
Diamonds, kimberlite, froth flotation, thermal treatment, electrochemical conditioning, attachments, films, scrubbing
DOI: 10.1134/S1062739121020137
REFERENCES
1. Chanturia, V.A., Godun, K.V., Zhelyabovsky, Yu.G, and Goryachev, B.E., Current State of Diamond Mining Industry in Russia and Main Diamond Mining Countries of the World, Gornyi Zhurnal, 2015, no. 2, pp. 55–58.
2. Chaadaev, A.S., Cherepnov, A.N., Zyryanov, I.V., and Bondarenko, I.F., Prospective Trends for the Development of Diamond Ore Mining and Processing Technologies at PJSC ALROSA, Gornyi Zhurnal, 2016, no. 2, pp. 56–61.
3. Chanturia, V.A., Dvoichenkova, G.P., Kovalchuk, O.E., and Timofeev, A.S., Surface Composition and Role of Hydrophylic Diamonds in Foam Separation, J. Min. Sci., 2015, vol. 51, no. 6, pp. 1235–1241.
4. Dvoichenkova, G., Chanturiya, V., Morozov, V., Podkamenny, Y., and Kovalchuk, O., Analysis of Distribution of Secondary Minerals and Their Associations on the Surface of Diamonds and in Derrivative Products of Metasomatically Altered Kimberlites, J. Polish Miner. Eng. Soc., 2019, vol. 43, no. 1, pp. 43–46.
5. Kovalenko, E.G., Dvoichenkova, G.P., and Polivanskaya, V.V., Scientific Justification of the Combined Use of Thermal and Electrochemical Treatment to Increase the Efficiency of Froth Flotation of Diamond-Containing Raw Materials, Nauch. Vestn. MGGU, 2014, no. 3, pp. 67–80.
6. Makarsky, I.V., Adodin, E.I., and Tarasova, L.G., Improvement of Thermochemical Methods for Diamond Scrubbing, Gornyi Zhurnal, 2011, no. 1, pp. 89–91.
7. Chanturia, V.A., Ryazantseva, M.V., Dvoichenkova, G.P., Minenko, V.G., and Koporulina, E.V., Surface Modification of Rock-Forming Minerals of Diamond-Bearing Kimberlites under Interaction with Wastewater and Electrochemically Trated Water, J. Min. Sci., 2017, vol. 53, no. 1, pp. 126–132.
8. Gushchin, N.A., Chekhovskaya, O.M., Gushchina, Yu.F., and Ivanov, E.V., Termodinamicheskiy raschet ravnovesiya dlya khimicheskikh reaktsiy (Thermodynamic Equilibrium Calculation for Chemical Reactions), Moscow: Information Center of Gubkin National University of Oil and Gas, 2013.
9. Timakova, E., Fizicheskaya khimiya. Khimicheskaya termodinamika (Physical Chemistry. Chemical Thermodynamics), Novosibirsk: NGTU, 2016.
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11. Karapetyants, M.Kh. and Karapetyants, M.L., Osnovnye termodinamicheskie konstanty neorganicheskikh i organicheskikh veshchestv (Basic Thermodynamic Constants of Inorganic and Organic Substances), Moscow: Khimiya, 1968.
12. Karabutov, A.A., Cherepetskaya, E.B., Kravtsov, A.N., and Arrigoni, M., Methods for Studying the Structure and Properties of Rocks on Samples (Brief Review), Gorn. Nauki i Tekhnologii, 2018, no. 4, pp. 10–20.
13. Mahoney, J., Monroe, C., and Swartley, A.M., Surface Analysis Using X-ray Photoelectron Spectroscopy, Spectroscopy Letters an Int. J. for Rapid Communication, 2020, vol. 53, no. 10, pp. 726–736.
14. Anthony, J.W., Bideaux, R.A., Bladh, K.W., Monte, C., and Nichols, M.C., Handbook of Mineralogy, Eds. Mineralogical Society of America, 2003.
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17. Pestryak, I.V., Modeling and Analysis of Physicochemical Processes in Recirculating Water Conditioning, J. Min. Sci., 2015, vol. 51, no. 4, pp. 811–818.
18. Chukanov, N. and Chervonnyi, A., Infrared Spectroscopy of Minerals and Related Compounds, Springer Cham Heidelberg New York Dordrecht London, Springer Int. Publish, Switzerland, 2016.
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22. Chanturia, V.A., Dvoichenkova, G.P., Bunin, I.Zh., Minenko, V.G., Kovalenko, E.G., and Podkamenny, Yu.A., Combination Processes of Diamond Recovery from Metasomatically Altered Kimberlite Rocks, J. Min. Sci., 2017, vol. 53, no. 2, pp. 317–326.
ADSORPTION PROPERTIES OF MODIFIED SAPONITE IN REMOVAL OF HEAVY METALS FROM PROCESS WATER
V. G. Minenko
Academician Melnikov Institute of Comprehensive Exploitation of Mineral Resources—IPKON, Russian Academy of Sciences, Moscow, 111020 Russia
e-mail: vladi200@mail.ru
The adsorption properties of electrochemically and thermally modified saponite relative to heavy metals are analyzed. The tests have found the efficient use and regeneration parameters of the sorbent to ensure maximized adsorption of cations of heavy metals and to enable production of pregnant solutions with high concentrations of heavy metals.
Sorbent, modified saponite, heavy metals, process water, scrubbing, statistical exchange capacity
DOI: 10.1134/S1062739121020149
REFERENCES
1. Chanturia, V., Minenko, V., Suvorova, O., Pletneva, V., and Makarov, D., Electrochemical Modification of Saponite for Manufacture of Ceramic Building Materials, Appl. Clay Sci., 2017, vol. 135, pp. 199–205.
2. Minenko, V.G., Makarov, D.V., Samusev, A.L., Suvorova, O.V., and Selivanova, E.A., New Efficient Techniques of Saponite Recovery from Process Water of Diamond Treatment Plants Yielding High-Quality Marketable Products, Int. Miner. Proc. Congr., 2018, pp. 2946– 2955.
3. Minenko, V.G., Justification and Design of Electrochemical Recovery of Saponite from Recycled Water, J. Min. Sci., 2014, vol. 50, no. 3, pp. 595–600.
4. Zhou, C.H., Zhou, Q., Wu, Q.Q., Petit, S., Jiang, X.C., Xia, S.T., Li, C.S., and Yu, W.H., Modification, Hybridization and Applications of Saponite: An Overview, Appl. Clay Sci., 2019, vol. 168, pp. 136–154.
5. Nityashree, N., Gautam, U.K., and Rajamathi, M., Synthesis and Thermal Decomposition of Metal Hydroxide Intercalated Saponite, Appl. Clay Sci., 2014, vol. 87, pp. 163–169.
6. Villa-Alfagemea, M., Hurtado, S., Castro, M., Mrabet, S., Orta, M., Pazosc, M., and Alba, M., Quantification and Comparison of the Reaction Properties of FEBEX and MX-80 Clays with Saponite: Europium Immobilisers under Subcritical Conditions, Appl. Clay Sci., 2014, vol. 101, pp. 10–15.
7. Gebretsadik, F., Mance, D., Baldus, M., Salagre, P., and Cesteros, Y., Microwave Synthesis of Delaminated Acid Saponites Using Quaternary Ammonium Salt or Polymer as Template, Study of pH Influence, Appl. Clay Sci., 2015, vol. 114, pp. 20–30.
8. Bochkarev, G.R. and Pushkareva, G.I., Strontium Removal from Aqueous Media by Natural and Modified Sorbents, J. Min. Sci., 2009, vol. 45, no. 3, pp. 290 – 294.
9. Tkachenko, O.P., Kustov, L.M., Kapustin, G.I., Mishina, I.V., and Kuperman, A., Synthesis and Acid-Base Properties of Mg-Saponite, Mendeleev Communications, 2017, vol. 27(4), pp. 407–409.
10. Morozova, M.V., Frolova, M.A., and Makhova, T.A., Sorption-Desorption Properties of Saponite-Containing Material, J. of Physics: Conf. Series, 2017, vol. 929, 012111.
11. Petra, L., Billik, P., Melichova, Z., and Komadel, P., Mechanochemically Activated Saponite as Materials for Cu2+ and Ni2+ Removal from Aqueous Solutions, Applied Clay Sci., 2017, vol. 143, pp. 22–28.
12. Bochkarev, G.R. and Pushkareva, G.I., New Natural Sorbent to Extract Metals from Aqueous Media, J. Min. Sci., 1998, vol. 34, no. 4, pp. 339–343.
13. Bochkarev, G.R., Kovalenko, K.A., and Pushkareva, G.I., Copper Adsorption on Porozhinskoe Manganese Ore, J. Min. Sci., 2015, vol. 51, no. 5, pp. 1029–1033.
DISSOCIATION OF GOLD ORE FROM GURBEY DEPOSIT UNDER IMPACT EFFECTS
A. I. Matveev*, E. S. L’vov**, and A. V. Zaikina***
Chersky Institute of Mining of the North, Siberian Branch, Russian Academy of Sciences,
Yakutsk, 677007, Republic of Sakha (Yakutia), Russia
*e-mail: andrei.mati@yandex.ru
**e-mail: lvoves@bk.ru
TESCAN, Saint-Petersburg, 195220 Russia
***e-mail: Arina.Zaikina@tescan,ru
Dissociation of gold particles is tested in disintegration of Gurbey deposit ore samples under multiple impact effects in crusher DKD-300. It is found that in disintegration of gold-bearing schistose quartz ore, dissociation of gold particles larger than 100 µm in size extractable by gravity reaches 47%. The test results are confirmed by the data of the automated mineralogical analysis on scanning electron microscope TESCAN TIMA.
Disintegration, crusher, dissociation, scanning, X-ray examination, grain-size composition, gold
DOI: 10.1134/S1062739121020150
REFERENCES
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3. Neskoronmykh, V.V. and Kostin, Yu.S., Teoreticheskie osnovy mekhaniki razrusheniya i proektirovaniya tekhniki i tekhnologii napravlennogo bureniya anizotropnykh gornykh porod (Theoretical Foundations of Fracture Mechanics and Designing of Equipment and Technology for Directional Drilling of Anisotropic Rocks), Irkutsk: IrGTU, 2000.
4. Kershtein, I.M., Klyushnikov, V.D., Lomakin, E.V., and Shesterikov, S.A., Osnovy eksperimental’noi mekhaniki razrusheniya (Foundations of Experimental Fracture Mechanics), Moscow: MGU, 1989.
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7. Efimov, V.P., Improving the Technology of Fine Grinding of Technogenic Raw Materials Based on Dosed Stage Disintegration, GIAB, 2020, no. 4, pp. 29–43.
8. Gazaleeva, G.I., Tsypin, E.F., and Chervyakov, S.A., Rudopodgotovka. Droblenie, grokhochenie, obogashchenie (Ore Pretreatment. Crushing, Screening, Dressing), Yekaterinburg: OOO UTsAO, 2014.
9. L’vov, E.S. and Matveev, A.I., Studying the Formation of Grain-Size Composition and Dissociation of Minerals in Ore Crushing by Multiple Dynamic Action Device DKD-300, GIAB, 2014, no. 10, pp. 112–116.
10. Gorain, K., Innovative Process Development in Metallurgical Industry, Physical Proc.: Innovations in Miner. Proc., 2015, pp. 9–65.
11. L’vov, E.S., Determination of Disintegration Features of Lump Geomaterials during Crushing Using Dynamic Effects, GIAB, 2018, no. 11, pp. 154–160.
12. Matveev, A.I. and L’vov, E.S., Disintegratability Procedure for Geomaterials in Multiple Impact Crushing, J. Min. Sci., 2020, vol. 56, no. 2, pp. 283–287.
13. Bocharov, V.A., Ignatkina, V.A., Kayumov, A.A., Makavetskas, A.R., and Fishchenko, Yu.Yu., Influence of Structural Features and Nature of Interaction between Minerals on the Selection of Methods for Lead-Bearing Ore Separation, J. Min. Sci., 2018, vol. 54, no. 5, pp. 821–830.
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16. Matveev, A.I., L’vov, E.S., and Vinokurov, V.P., Novelty in Ore Pretreatment—Crushers and Grinders of Multiple Impact Action, GIAB, 2016, no. 8, pp. 242–252.
GRAVITY AND MAGNETIC SEPARATION OF POLYMETALLIC PEGMATITE FROM WADI EL SHEIH GRANITE, CENTRAL EASTERN DESERT, EGYPT
Mohamed F. Raslan, Sherif Kharbish, Mona M. Fawzy*, Mohamed M. El Dabe, and Mai M. Fathy
Nuclear Materials Authority of Egypt, Cairo, Egypt
*e-mail: mm1_fawzy@yahoo.com
Suez University, El Salam, 43518 Egypt
Occurrence and mineralogy of economically important rare-metal mineralization from pegmatite of Wadi El Sheih granite, Central Eastern Desert of Egypt, was previously discussed. The mineralogical investigation of the bulk composite sample collected from the studied pegmatite revealed the presence of 7.59% by mass heavy economic polymetallic minerals such as euxenite-(Y), fergusonite-(Y), allanite-(Ce), xenotime-(Y), uranothorite and zircon. This work investigated the use of high intensity magnetic separator in conjunction with gravity pre-concentration steps via shaking table concentrator to recover rare-metals and rare earth bearing mineralization of Wadi El Sheih pegmatitic granitoid sample. The results of magnetic separation are related to the magnetic susceptibility measurements of pure single crystal minerals using vibrating sample magnetometer instruments.
Rare metal mineralization, physical concentration, vibrating sample magnetometer, Wadi El Sheih pegmatite
DOI: 10.1134/S1062739121020162
REFERENCES
1. El Dabe, M.M., A New Occurrence of Polymetals Mineralized Pegmatites in the Older Granites, Wadi El Sheih Area, Central Eastern Desert, Egypt, Al Azhar Science Magazine, 2017.
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5. Ercit, T.S., REE-Enriched Granitic Pegmatites, Rare Element Geochemistry and Ore Deposits, Geological Association of Canada, Short Course Notes, 2005, vol. 17, pp. 257–296.
6. William, S.B., Hanson, S.L., and Falster, A.U., Samarskite-Yb: A New Species of the Samarskite Group from the Little Pasty Pegmatites, Jefferson County, Colorado, Can. Mineral, 2006, vol. 44, no. 5, pp. 1119–1125.
7. Pal, D.C., Mishra, B., and Bernhardt, H.J., Mineralogy and Geochemistry of Pegmatite-Hosted Sn-, Ta-, Nb- and Zr-Hf Bearing Minerals from the Southeastern Part of the Bastar-Malkangiri Pegmatite Belt, Central India, Ore Geology Reviews, 2007, vol. 30, pp. 30–55.
8. Raslan, M.F., Mineralogical and Minerallurgical Characteristics Of Samarskite-Y, Columbite and Zircon From Stream Sediments of the Rasbaroud Area, Central Eastern Desert, Egypt, The Scientific Papers of the Institute of Mining of the Wroclaw University of Technology, Wroclaw, Poland, J. Min. and Geol., 2009, no. 126, XII, pp. 179–195.
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10. Raslan, M.F., Mona M. Fawzy, and Abu-Khoziem, H., Mineralogy of Mineralized Pegmatite of Ras Mohamed Granite, Southern Sinai, Egypt, Int. J. of Geol., Earth and Environmental Sci., 2017, vol. 7, no. 1, pp. 65–80.
11. Raslan, M.F. and Mona M. Fawzy, Mineralogy and Physical Upgrading of Fergusonite-Y and Hf-Zircon in the Mineralized Pegmatite of Abu Dob Granite, Central Eastern Desert, Egypt, Tabbin Institute for Metallurgical Studies (TIMS Bulletin), 2018, vol. 10, pp. 52–65.
12. Mona M. Fawzy, Mahdy, N.M., and Mabrou,k S., Mineralogical Characterization and Physical Upgrading of Radioactive and Rare Metal Minerals from Wadi Al-Baroud Granitic Pegmatite at the Central Eastern Desert of Egypt, Arabian J. of Geosciences, 2020, vol. 13, pp. 413.
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REGIME DESIGN FOR GOLD ORE FLOTATION BY AIR AND STEAM MIXTURE
S. I. Evdokimov and T. E. Gerasimenko*
North Caucasian Institute of Mining and Metallurgy (State Technological University),
Vladikavkaz, 362021 North Ossetia–Alania Republic, Russia
*e-mail: gerasimenko_74@mail.ru
The flowchart is developed for gold ore flotation at the reduced impurity of the rougher flotation product with difficult middlings. The rougher flotation concentrate is subjected to scavenging by aerated air and hot steam mixture. In cold pulp slurry, the steam condensation heat is removed from bubbles to wetting films. With increasing temperature, the hydrophilic repulsive forces, that stabilize the films, can be reduced to excess osmotic pressure between the hydrophilic surfaces, and the instability of the films between the hydrophobic surfaces can be reduced to excess osmotic pressure of surrounding water, i.e. to the hydrophobic attraction forces. The test machine is designed to measure heat-transfer coefficients during aeration of water by air–steam mixture. The revealed heat loss patterns enable determining the efficient steam flow to ensure water heating in the interfacial layers of bubbles at the minimized loss of the heat source. Using an ore sample, it is demonstrated that it is possible to enhance gold recovery using the designed circuit of rougher flotation and the method of rougher concentrate scavenging.
Gold ore, flotation, air–steam mixture, gold recovery enhancement
DOI: 10.1134/S1062739121020174
REFERENCES
1. Mirzekhanov, G.S and Mirzekhanova, Z.G., Forward Appraisal of Potential Gold Content of Dredge and Sluice Tailings Dumps at Placers at Russia’s far East, Journal of Mining Science, 2020, vol. 56, no. 2, pp. 259–267.
2. Aleksandrova, T.N., Afanasova, A.V., and Aleksandrov, A.V., Microwave Treatment to Reduce Refractoriness of Carbonic Concentrates, Journal of Mining Science, 2020, vol. 56, no. 1, pp. 136–141.
3. Matveeva, T.N., Gromova, N.K., and Lantsova, L.B., Analysis of Complexing and Adsorption Properties of Dithiocarbamates Based on Cyclic and Aliphatic Amines for Gold Ore Flotation, Journal of Mining Science, 2020, vol. 56, no. 2, pp. 268–274.
4. Gavrilova, T.G. and Kondrat’ev, S.A., Effect of Physisorption of Collector on Activation of Flotation of Sphalerite, Journal of Mining Science, 2020, vol. 56, no. 3, pp. 445–456.
5. Wang, H., Bochkarev, G.R., Rostovtsev, V.I., Veigel’t, Yu.P., and Lu, S., Intensification of Polymetallic Sulfide Ore Dressing by High-Energy Electrons, Journal of Mining Science, 2002, vol. 38, no. 5, pp. 499–505.
6. Chanturia, V.A., Bunin, I.Zh., Ryazantseva, M.V., Chanturia, E.L., Khabarova, I.A., Koporulina, E.V., and Anashkina, N.E., Modification of Structural, Chemical and Process Properties of rare Metal Minerals under Treatment y High-Voltage Nanosecond Pulses, Journal of Mining Science, 2017, vol. 53, no. 4, pp. 718–733.
7. Algebraistova, N.K., Burdakova, E.A., Romanchenko, A.S., Markova, A.S., Kolotushkin, D.M., and Antonov, A.V., Effect of Pulse-Discharge Treatment on Structural and Chemical Properties and Floatability of Sulfide Minerals, Journal of Mining Science, 2017, vol. 53, no. 4, pp. 743–749.
8. Albrecht T. W. S., Addai-Mensah J., and Fornasiero D. Critical copper concentration in sphalerite flotation: Effect of temperature and collector, Int. J. of Miner. Proc., 2016, vol. 146, pp. 15–22.
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11. Xia, W., Role of Surface Roughness in the Attachment Time between Air Bubble and Flat Ultra-Low-Ash Coal Surface, Int. J. of Miner. Proc., 2017, vol. 168, pp. 19–24.
12. Albijanic, B., Ozdemir, O., Nguyen, A.V., and Bradshaw, D., A Review of Induction and Attachment Times of Wetting Thin Films between Air Bubbles and Particles and Its Relevance in the Separation of Particles by Flotation, Advances in Colloid and Interface Sci., 2010, vol. 159, pp. 1–21.
13. Shikhalev, S.V., Minukhin, L.A., and Reshetnikov, I.F., Heat-Transfer and Mass-Exchange Processes in Vaporation of Steam from Air–Steam Mixture on Horizontal Faces of Coated Machines, Tekhn. Tekhnol. Pishch. Proizv., 2014, no. 3, pp. 103–107.
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38. Evdokimov, S.I., Datsiev, M.S., and Podkovyrov, I.Yu., Development of a New Flow Chart and Method for Flotation of Olimpiada Deposit Ore, Izv. vuzov. Tsv. Metallurg., 2014, no. 1, pp. 3–11.
39. Evdokimov, S.I. and Evdokimov, V.S., Enhanced Gold Recovery Based on Joint Ore and Waste Processing, Journal of Mining Science, 2017, vol. 53, no 2, pp. 358–366.
MINE AEROGASDYNAMICS
THE ANALYSIS OF POTASH SALT DUST DEPOSITION IN ROADWAYS
M. A. Semin*, A. G. Isaevich**, and S. Ya. Zhikharev***
Mining Institute, Ural Branch, Russian Academy of Sciences,
Perm, 614007 Russia
*e-mail: seminma@inbox.ru
**e-mail: aero_alex@mail.ru
***e-mail: perevoloki55@mail.ru
The authors propose a mathematical model of salt particulate dynamics in a roadway, including convection and diffusion of particles with air flow, coagulation of particles, condensation of water on them, and gravity deposition of particles on the roadway floor. Using the finite difference method, the problem on flow of salt particulates in a roadway is solved, and the particulate concentrations and the average size of particles are determined. The calculations are compared with the analytical model and full-scale test data. The found correlation between the particulate deposition velocity and the aerosol parameters can be used for the parametrization of mathematical models of air–dust mixture flow in ventilation networks of potash mines.
Mine ventilation, potash salt, salt dust, air–dust mixture, modeling, dust deposition
DOI: 10.1134/S1062739121020186
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NEW METHODS AND INSTRUMENTS IN MINING
QUASI-DISTRIBUTED FIBER-OPTIC MONITORING SYSTEM FOR OVERLYING ROCK MASS PRESSURE ON ROOFS OF UNDERGROUND EXCAVATIONS
A. D. Mekhtiev*, A. V. Yurchenko**, S. G. Ozhigin, E. G. Neshina***, and A. D. Al’kina
Seifullin Kazakh Agrotechnical University, Nur-Sultan, 010000 Kazakhstan
*e-mail: barton.kz@mail.ru
Tomsk Polytechnical University, Tomsk, 634050 Russia
**e-mail: niipp@inbox.ru
Karaganda Technical University, Karaganda, 100012 Kazakhstan
***e-mail: 1_neg@mail.ru
The ground control using optical fibers is discussed. The designed monomode fiber pressure sensor is capable to perform high-precision measurement of overlying rock mass pressure imposed on walls of underground excavation. The mathematical apparatus is presented for the calculation of radiation intensity of optical wave traveling along an optical fiber with and with no mechanical effects. The simulation model is developed for an underground excavation with steel arch support. The model is equipped with the fiber-optic monitoring system and pressure sensors. This model enables practicing the ground control methods and measurements. The critical element of the simulation model is its hardware/software complex with interface showing four check zones with fiber-optic pressure sensors. This monitoring system is explosion-proof and is suitable for operation in super hazardous mines in terms of gas and dust outbursts.
Fiber-optic sensors, monitoring system, overlying rock pressure, mine, explosive atmosphere, underground excavation, safety, mining, Karaganda coal basin, optic fiber
DOI: 10.1134/S1062739121020198
REFERENCES
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2. Osorio, J.H., Chesini, G., and Serrao, V.A., Simplifying the Design of Microstructured Optical Fibre Pressure Sensors, Scientific Reports, 2017, no. 7, pp. 1–7.
3. Poeggel, S., Tosi, D., Duraibabu, D., Leen, G., McGrath, D., and Lewis, E., Optical Fibre Pressure Sensors in Medical Applications, Sensors, 2015, no. 15, pp. 17115–17148.
4. Frantisek, U., Urban, F., Kadlec, J., Vlach, R., and Kuchta, R., Design of a Pressure Sensor Based on Optical Fiber Bragg Grating Lateral Deformation, Sensors, 2010, no. 10, pp. 11212–11225.
5. Yurchenko, A.V., Mekhtiyev, A.D., Bulatbayev, F.N., Neshina, E.G., and Alkina, A.D., The Model of a Fiber-Optic Sensor for Monitoring Mechanical Stresses in Mine Working, Russian J. of Nondestructive Testing, 2018, vol. 54, no. 7, pp. 528–533.
6. Mekhtiev, A.D., Yurchenko, A.V., Neshina, E.G., Al’kina, A.D., and Madi, P.Sh., Physical Foundations of Creating Pressure Sensors based on Changes in the Refractive Index of Light during Microbending of an Optic Fiber, Izd. Vuzov. Fizika, 2020, vol. 63, no. 2, pp. 129–136.
7. Yurchenko, A.V., Mekhtiyev, A.D., Bulatbaev, F.N., and Alkina, A.D., The Use of Optical Fiber to Control the Sudden Arch Collapse of the Mine Working, Proc. of Int. Conf. on Innovations in Non-Destructive Testing (SibTest) IOP Publishing IOP Conf. Series: J. of Physics, 2017, no. 881, pp. 1–5.
8. Chotchaev, Kh.O., Monitoring the Stress-Strain State of the Rock Mass by Soundometric and Geophysical Methods, Geologiya i geofizika yuga Rossii, 2016, no. 3, pp. 129–140.
9. Abramovich, A.S., Pudov, E.Yu., Kuzin, E.G., Kavardakov, A.A., and Bakin, V.A., Prerequisites for the Creation of a System for Automated Monitoring and Accounting of Roof Displacements in Underground Excavations to Improve the Mining Safety, Vestn. KuzGTU, 2017, no. 5, pp. 85–90.
10. Zayatdinov, D.F. and Lysenko, M.V., Development of a System for Electronic Monitoring of Adjacent Rock Mass Conditions in Mine Workings, Ugol’, 2017, no. 8, pp. 90–92.
11. Buyalich, G.D., Tarasov, V.M., and Tarasova, N.I., Interaction of the Roof Support Section with Lateral Rocks as the Pressure of Sliding Prisms according to the P. M. Tsimbarevich’ s Hypothesis. Development of a Hypothesis to a Concept, Vestn. Nauch. Tsentra Bezop. Rabot Ugol. Prom., 2014, no. 2, pp. 114–120.
12. Buyalich, G.D., Tarasov, V.M., and Tarasova, N.I., Improving the Operating Safety when the Sections of Powered Support Interact with the Roof in the Bottomhole Region of the Longwall, Vestn. Nauch. Tsentra Bezop. Rabot Ugol. Prom., 2013, nos. 1–2, pp. 130–135.
13. Grechishkin, P.V., Rozonov, E.Yu., Klishin, V.I., Opruk, G.Yu., and Shcherbakov, V.N., Roof Control to Improve the Efficiency of Supporting Mine Workings Protected by Yield Pillars, Ugol’, 2019, no. 10, pp. 35–41.
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