JMS, Vol. 54, No. 4, 2018
GEOMECHANICS
INTEGRATED MULTI-LEVEL GEOMONITORING OF NATURAL-AND-TECHNICAL OBJECTS IN THE MINING INDUSTRY
N. N. Mel’nikov, A. I. Kalashnik, N. A. Kalashnik, and D. V. Zaporozhets
Mining Institute, Kola Science Center, Russian Academy of Sciences, Apatity, 184209 Russia
e-mail: kalashnik@goi.kolasc.net.ru
The system of integrated multi-level geomonitoring is developed for technical objects and oil/gas reservoirs in the west of Russian Arctic. The system is based on the principle of synchronization of inter-branch researches, including geodetic, geomechanical, geophysical and geotechnical measurements on the ground surface and by GPS, as well as subsurface, surface, aerial and GPR survey. The system uses the information technologies Big Data and Cloud Service with intelligence elements, and provides geomonitoring investigations at differ levels: remote, air, surface, subsurface, computer. In-situ inter-branch multi-level studies are the framework of the geomonitoring which continuously replenish and updates data bases. The multi-level approach is also involved in computer modeling: the geodynamic models of a man-made object, Kola Peninsula, Baltic Shield and Eurasian Plate are created as hierarchically nested structures. The models are analyzed under various boundary conditions, which enabled solution of an inverse problem on stress state of subsurface rock mass differentially by the investigates scales. The multi-level geomonitoring system is implemented at technical objects of the key mining companies of the Kola Peninsula: Kovdorsky GOK, Kola MMC, Apatit, Oleniy Ruchey and OLKON GOKs.
Multi-level geomonitoring, integrated inter-branch studies, natural-and-technical objects, mining industry
DOI: 10.1134/S1062739118043977
REFERENCES
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GEOMECHANICAL AND HYDRODYNAMIC FIELDS IN PRODUCING FORMATION IN THE VICINITY OF WELL WITH REGARD TO ROCK MASS PERMEABILITY–EFFECTIVE STRESS RELATIONSHIP
L. A. Nazarova and and L. A. Nazarov
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
e-mail: naz@misd.ru
The nonlinear model is developed to describe geomechanical and hydrodynamic fields in the vicinity of a vertical well in a fluid-saturated formation for the case when the permeability k depends on the effective stress σf by the exponential law. The analytical solutions are obtained for the porous–elastic and porous–elastoplastic modes of deformation of the well vicinity, based on which the change in the pressure and rate of flow under the variation of parameters characterizing the dependence k(σf) is analyzed. It is found that the rate of flow exponentially decreases with an increasing horizontal stress of the external field; the permeability of the irreversible strain zone around the well decreases with the distance from the well boundary. The test scheme is proposed for permeability of samples with the center hole under side loading, and the experimental data interpretation procedure is put forward, which enables finding the empirical dependence k(σf).
Rock mass, porous–elastic and porous–elastoplastic deformation, effective stress, permeability, well, experiment, sample with center hole
DOI: 10.1134/S1062739118043989
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SEISMIC EVENT IN THE KOMSOMOLSKAYA MINE ON THE 25TH OF JANUARY, 2018
N. N. Noskova, V. E. Asming, and A. V. Fedorov
Academician Yushkin Institute of Geology, Komi Science Center, Ural Branch, Russian Academy of Sciences, Syktyvkar, 167982 Russia
e-mail: noskova@geo.komisc.ru
Kola Division, Unified Geophysical Service of the Russian Academy of Sciences, Apatity, 184209 Russia
e-mail: asminve@mail.ru
e-mail: andrey_v_fedorov@inbox.ru
On the 25th of January, 2018 within the limits of the Vorkuta urban district, the regional seismic stations recorded an event classified as a rock burst. The records of 17 stations at the epicentral distances from 260 to 1645 km were collected and analyzed. The epicenter was localized in the Komsomolskaya Mine field of the Vorkuta coal deposit. Parameters of this event hypocenter were calculated by the data of the mine seismic monitoring network GITS, Vorkutaugol, which greatly improved reliability of determination of the hypocenter as compare with processing results of he regional stations and offered a reference estimate of the localization. The 25th of January rock burst has one more time proved that the geodynamic control and safety enhancement in the important mining region in the Republic of Komi requires installation of seismic stations nearby mine fields in the Vorkuta district.
Rock burst, induced seismicity, geodynamic safety, coal mine, Vorkuta deposit
DOI: 10.1134/S1062739118043990
REFERENCES
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MONITORING OF GROUND SURFACE DISPLACEMENT UNDER MINING OF THE SOKOLOVO–SARBAI DEPOSIT BY THE RADAR INTERFEROMETRY METHOD
A. V. Usanova and S. V. Usanov
Institute of Mining, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620219 Russia
e-mail: anne.usanova@gmail.com
e-mail: usv@igduran.ru
The ground surface displacement under mining of the Sokolovo–Sarbai iron ore deposit is measured using radar survey data obtained over the period from 2006 to 2016. The purpose of the research is to determine features of the process inside the displacement trough of the Sokolovskaya Mine under conditions of water-encroached loose formations. Using a series of ALOS Palsar and ALOS-2 satellite radar images, the vertical subsidence in the test area of the deposit is evaluated. The history and boundaries of displacements within the displacement trough, in pitwalls and in dump slopes are determined.
Earth remote sensing, archive radar images, rock movement, Sokolovo deposit, displacement trough, subsidences
DOI: 10.1134/S1062739118044002
REFERENCES
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ROCK FAILURE
INITIATION OF TECTONIC EARTHQUAKES DURING UNDERGROUND MINING
G. G. Kocharyan, A. M. Budkov, and S. B. Kishkina
Institute of Geosphere Dynamics, Russian Academy of Sciences, Moscow, 119334 Russia
e-mail: geospheres@idg.chph.ras.ru
The influence of underground mine workings arranged nearby faults on the initiation of large seismic event is considered. Numerical modeling proves that amount of underground mine workings affects actual stiffness of rocks and initiates dynamic movements accompanied by intensive seismic radiation. As rock mass quality worsens, the effective shear modulus drops. The calculations show that the effective shear modulus lowers by 20% for the stopes on the same level, decreases 1.5 times in case of the stopes arranged on two levels and nearly halves for three levels. Such reduction in the actual shear stiffness of rock mass may be critical in terms of initiation of dynamic shift along a fault.
Induced seismicity, induced earthquakes, underground mine workings, monitoring, effective rock mass stiffness, faulting zones, Coulomb stress, modeling
DOI: 10.1134/S1062739118044014
REFERENCES
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29. Kocharyan, G.G. and Spivak, A.A., Dinamika deformirovaniya blochnykh massivov gornykh porod (Deformation Dynamics of Faulted Rocks), Moscow: Akademkniga, 2003.
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32. Arkhipov, V.N., Borisov, V.A., and Budkov, A.M., Mekhanicheskoe deistvie yadernogo vzryva (Mechanic Effects of Nuclear Explosion), Moscow: Fizmatlit, 2003.
33. Kocharyan, G.G., Zolotukhin, S.R., Kalinin, E.V., Panasiyaian, L.L., and Spungin, V.G., Stress–Strain State of Rock Mass in the Zone of Tectonic Fractures in the Korobkovo Iron Ore Deposit, J. Min. Sci., 2018, vol. 54, no. 1, pp. 13–20.
34. Nur, A., Mavko, G., Dvorkin, J., and Galmudi, D., Critical Porosity: A Key to Relating Physical Properties to Porosity in Rocks, The Leading Edge, 1998, vol. 17, no. 3, pp. 357–362.
BLASTING METHODS OF STRESS STATE DETERMINATION IN ROCK MASS
V. N. Tyupin and T. I. Rubashkina
Belgorod State University, Belgorod, 108015 Russia
e-mail: tyupinvn@mail.ru
The methods for the determination of stress state in rock mass using the energy of explosion are substantiated. The industrial tests are performed with a view to sizing zones of squeezing and radial fracturing in mines of Priargunsky Mining and Chemical Works. It is found that the fracturing zone radius decreases and the squeezing zone diameter increases with the grater depth of mining operations. The theoretical formulas for calculating stresses depending on sizes of squeezing and fracturing zones, physical and mechanical properties of rocks and detonation characteristics of explosives are obtained. The validity of the formulas is proved in comparison with the method of stress measurement in parallel drill holes at the Antei deposit of Priargunsky MCW. The method of stress determination by blasting is suitable for operational application during heading in mines.
Rock mass, stress state, explosion energy, squeezing zone, radial fracturing zone, physicotechnical properties, stress formulas, validity
DOI: 10.1134/S1062739118044026
REFERENCES
1. Kurlenya, M.V., Oparin, V.N., Reva V. N., Glushikhin, F.P., Rozenbaum, M.A., and Tapsiev, A.P., A Method for Estimating the Stress State of Rock Mass,, J. Min. Sci., 1993, vol. 28, no. 5, pp. 397–401.
2. Kurlenya, M.V., Mirenkov, V.E., and Shutov, A.V., Stress–Strain State of a Rock Mass in the Zone of Mutual Influence of Workings, J. Min. Sci., 2000, vol. 36, no. 3, pp. 200–208.
3. Mikhailov, A.M., Calculation of the Stresses around a Crack, J. Min. Sci., 2000, vol. 36, no. 5, pp. 445–451.
4. Aitaliev Sh.M. and Takishov, A.A., Control of Arch Formation in the Room-and-Pillar System of Mining. Part 1: Stress-Strain State of the Rock Mass, J. Min. Sci., 2000, vol. 36, no. 2, pp. 97–105.
5. Bushmanova, O.P. and Revuzhenko, A.F., Stress State of the Rock Mass around Working under Localization of Shear Strain, J. Min. Sci., 2002, vol. 38, no. 2, pp. 116–123.
6. Panfilova, D.V. and Remezov, A.V., Estimating Rock Pressure during Stoping: Analysis of Methods, Vestn. KuzGTU, 2005, no. 41, pp. 48–52.
7. Kocharyan, G.G., Zolotukhin, S.R., Kalinin, E.V., Panasiyan, L.L., and Spugin V. G., Stress–Strain State of Rock Mass in the Zone of Tectonic Fractures in the Korobkovo Iron Ore Deposit, J. Min. Sci., 2018, vol. 54, no. 1, pp. 13–20.
8. Nikolenko, P.V., Shkuratnik, V.L., Chepur, M.D., and Koshelev, A.E., Using the Kaiser Effect in Composites for Stressed Rock Mass Control, J. Min. Sci., 2018, vol. 54, no. 1, pp. 21–26.
9. Mirenkov, V.E., Relationship between Mine Working Cross-Section and Damaged Rock Zone, J. Min. Sci., 2018, vol. 54, no. 1, pp. 27–33.
10. Kuznetsov, G.N., Ardashev, K.A., Filatov, N.A., and Amusin, B.Z., Metody i sredstva resheniya zadach gornoi geomekhaniki (Methods and Tools for Solving Geomechanics Problems), Moscow: Nedra, 1987.
11. Vitolin, E.S., Chernyakov, A.B., Ruban, A.D., and Potapov, A.M., Metody i sredstva kontrolya sostoyaniya i svoistv gornykh porod v massive (Methods and Tools for Control of the State and Properties of Rocks), Moscow: Nedra, 1989.
12. Trubetskoy, K.N., Iofis, M.A., and Postavnin, B.N., RF patent no. 2194857, Byull. Izobtet., 2002, no. 35.
13. Polozhenie po bezopasnomu vedeniyu gornykh rabot na mestorozhdeniyakh, sklonnykh i opasnykh po gornym udaram. Ser. 06 (Safety Regulations for Mining in Fields with Rock Burst Risks: Federal Norms and Rules for Production Safety. Ser. 06), Moscow: ZAO NTC PB, 2014, Issue 7.
14. Tyupin, V.N., Vzryvnye i gornomekhanicheskie protsessy v treschinovatykh napryazhennykh gornykh massivakh (Explosive and Geomechanical Processes in Fractured Stressed Rock Mass), Belgorod: Belgorod, 2017.
15. Sukhanov, A.F. and Kutuzov B. N., Razrushenie gornykh porod vzryvom (Rock Breakage), Moscow: Nedra, 1983.
SCIENCE OF MINING MACHINES
DETERMINING DISPLACEMENTS OF PULSED ELECTROMAGNETIC SOURCE OF SEISMIC SIGNALS
V. V. Ivashin and V. P. Pevchev
Tolyatti State University, Tolyatti, 445020 Russia
e-mail: V.Pevchev@tltsu.ru
The technology for nonexplosive seismic exploration of oil and gas reservoirs uses pulsed electromagnetic sources of seismic signals. Aiming to improve the technology efficiency, it is suggested to upgrade control in order to properly adjust the equipment operation mode. As a control parameter, the absolute displacement of the seismic source is chosen. This parameter is determined by estimating displacement of armature relative induction coil in electromagnetic motor. In the pulsed seismic source, it is difficult to apply displacement sensors with power drive as well as remote control sensors for the determination of movement of elements in the electromagnetic motor. The analysis of electromechanical transformation of energy in the electromagnetic motor of a seismic source shows indirect determination capability of the required parameter by means of measurement of electric values in the power system: armature current and magnetic flux though the gap.
Seismic source, powerful short-stroke electromagnet, gap, emitter displacement control
DOI: 10.1134/S1062739118044038
REFERENCES
1. Shchadin, P.Yu., Pulsed Electromagnetic Seismic Sources Yenisei. Review of Models and Application Experience, Pribory Sistemy Razved. Geofiz., 2005, no. 4, pp. 6–12.
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3. Pevchev, V.P., Pulsed Supply System of Electromagnetic Motor for Seismic Wave Source, Vestn. KGTU Tupoleva, 2009, no. 3, pp. 62–66.
4. Accelerometers. Available at: http://www.analog.com/en/products/mems/ accelerometers.html (accessed: 20.03.2018).
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6. Ivashin, V.V. and Ivannikov, N.A., RF patent no. 2265234. Byull. Izobret., 2005, no. 33.
7. Pevchev, V.P., The Use of Micro-Cap Software to Simulate Operating Processes of Electromechanical Impulse Devices, Russian Electrical Engineering, 2010, vol. 81, no. 4, pp. 213–216.
8. Kharkevich, A.A., Izbrannye trudy (Selectals), vol. 1: Theory of Electro–Acoustic Converters. Wave Processes, Moscow: Nauka, 1973.
9. Sensor Systems. Linear Displacement Sensors. Available at: http://www.sensor-systems.ru/category_11.html (accessed: 20.03.2018).
10. Moshkin, V.I. and Ugarov, G.G., Influence of Operation and Design Parameters of Linear Electromagnetic Motors on Efficiency of Electro–Mechanical Energy Conversion, Vestn. SGTU, 2012, no. 2 (66), pp. 124–129.
11. Moshkin, V.I. and Ugarov, G.G., Energy Modes of Pulsed Linear Electromagnetic Motors, Proc. 9th Int. Conf. on Automatic Electric Actuator AEP-2016, 2016, pp. 71–76.
DESIGN METHODOLOGY FOR CUTTING DRUM, POWER RATING AND OPERATIONAL CONTROL OF SURFACE MINER UNDER VARIED ROCK CONDITIONS—AN APPROACH
C. Kumar, V. M. S.R. Murthy, L. A. Kumaraswamidhas, and A. Prakash
Department of Mining Machinery Engineering, Indian Institute of Technology (ISM), Dhanbad 826004, India
e-mail: raa.swa@gmail.com
Department of Mining Engineering, Indian Institute of Technology (ISM), Dhanbad 826004,
India Central Institute of Mining and Fuel Research, Dhanbad 826015, India
Surface miners are being increasingly used in opencast mines owing to their ability to excavate thin bands selectively. Even minor variations in intact rock and rock mass parameters can adversely affect the performance of surface miner in terms of production and pick consumption. Power utilization both by rotary motion of cutting drum and linear motion of surface miner has been taken into account for arriving at suitable cutting speed and depth of cut. Cutting speed of surface miner, cutting force developed by individual pick and number of active picks coming in contact with the rock in respect to depth of cut under varied tensile strength can be determined through these studies. This will help the end user to decide suitable parameters for operational control. It is essential to optimize the operating parameters of machine (cutting speed and depth of cut) for a given rock mass condition with available machine power. The present study covers the 2.2 m wide drums of surface miner. Distribution of power available to the components of the machine has been arrived based on technical specifications of each component, taking power loss due to sleep occurs in belt power transmission mechanism.
Surface miner, drum width, depth of cut, cutting speed, cutting force, tensile strength, cutting power
DOI: 10.1134/S106273911804404X
REFERENCES
1. Wirtgen Surface Miners in Operation around the Globe, Job Report, 2013. http://www.media.wirtgen-group.com.
2. Kumar, C., Murthy, V. M. S.R., Kumaraswamidhas, L.A., and Prakash, A., Influence of Cutting Drum Specifications on the Production Performance of Surface Miner under Varied Rock Strength—Some Investigations, J. Min. Met. Fuels, 2016, vol. 64, pp. 181–186.
3. Prakash, A., Murthy, V. M. S.R., and Singh, K.B., Rock Excavation Using Surface Miners: An Overview of Some Design and Operational Aspects, Int. J. of Mining Science and Tech., 2013, vol. 23, pp. 33–40.
4. Prakash, A., A Study into the Influence of Intact Rock and Rock Mass Properties on the Performance of Surface Miners in Indian Geo-Mining Conditions, PhDTthesis, Indian School of Mines Dhanbad, 2013.
5. Evans, I., A Theory of the Basic Mechanics of Coal Ploughing, Proc. of the Int. Symp. on Mining Research, Oxford, Pergamon Press, 1961, vol. 2, pp. 761–768.
6. Thuro, K., Drillability Prediction—Geological Influences in Hard Rock Drill and Blast Tunneling, Geological Rundsch, 1997, vol. 86, pp. 426–438.
7. Murthy, V. M. S.R., Munshi, B., and Kumar, B., Predicting Roadheader Performance from Intact Rock and Rock Mass Properties—A Case Study, Proc. of National Seminar on Rock-Machine Interaction in Excavations, Banaras Hindu University, Varanasi, 2008.
8. Jain, S.C. and Rathore, S.S., Role of Physico-Mechanical Properties in Cutting Performance of Diamond Wire Saw in Marble Quarrying Operation, Proc. of Mine Planning and Equipment Selection, Australasian Institute of Mining and Metallurgy, Melbourne, 2010, pp. 179–190.
9. Prakash, A., Murthy, V. M. S.R., and Singh, K.B., Performance Simulation of Surface Miners with Varied Machine Parameters and Rock Conditions: Some Investigations, J. Geol. Min. Res., 2013, vol. 5, pp. 12–22.
10. Ordin, A.A. and Schwabenland, E.E., Evaluation of Technological Parameters for Apatite Extraction by Surface Miners, J. Min. Sci., 2016, vol. 52, no. 2, pp. 293–299.
11. Ordin, A.A. and Metel’kov, A.A., Optimization of the Fully-Mechanized Stoping Face Length and Efficiency in a Coal Mine, J. Min. Sci., 2013, vol. 49, no. 2, pp. 254–264.
12. Schwabenland, E.E., Potential of Surface Miners, Rats. Osv. Nedr, 2014, no. 1, pp. 54–60.
13. Evans, I., A Theory of the Cutting Force for Point-Attack Picks, Int. J. Min. Eng., 1984, vol. 2, pp. 63–71.
14. Roxborough, F.F. and Liu, Z.C., Theoretical Considerations on Pick Shape in Rock and Coal Cutting, Golosinski TS, Proc. of the 6th Underground Operator’s Conf., Kalgoorlie, WA, Australia, 1995, pp. 189–193.
15. Goktan, R.M., A Suggested Improvement on Evans Cutting Theory for Conical Bits, Proc. of the 4th Int. Symp. on Mine Mechanization and Automation, Queensland, 1997, pp. 457–461.
16. Goktan, R.M. and Gunes, N., A Semi-Empirical Approach to Cutting Force Prediction for Point-Attack Picks, J. South Afr. Inst. Min. Metall., 2005, vol. 105, pp. 257–263.
17. Belta, B., Sonmez, O.F., and Cengiz, A., Speed Losses in V-ribbed Belt Drives, Mechanism and Machine Theory, 2015, vol. 86, pp. 1–14.
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19. Prakash, A., Murthy, V. M. S.R., and Singh, K.B., A New Rock Cuttability Index for Predicting Key Performance Indicators of Surface Miners, Int. J. of Rock. Mech. and Min. Sci., 2015, vol. 77, pp. 339–347.
MINERAL MINING TECHNOLOGY
SUBSTANTIATION OF MINING-AND-TRANSPORTATION SYSTEM TYPE AND PARAMETERS FOR MINING OF ORE DEPOSITS IN THE CONDITIONS OF THE ON THE KOLA PENINSULA
E. V. Gromov, A. L. Bilin, O. V. Belogorodtsev, and G. O. Nagovitsyn
Mining Institute, Kola Science Center, Russian Academy of Sciences, Apatity, 184209 Russia
e-mail: evgromov@goikolasc.net.ru
Murmansk Arctic State University, Apatity, 184209 Russia
The technical approach to selection and substantiation of transportation systems for hard-to-access mineral mining in the Arctic is based on complexing computer-aided modeling and technical-and-economic assessment methods. The features of the transportation system design for mountainous and upland-and-flat terrains are described. The obtained relations of transportation cost and volume make it possible to validate the choice of transportation. In terms of the Partomchorr deposit, it is shown that under conditions of upland-and-flat terrain and minor level difference, it is efficient to use motor vehicles in case of small transportation volume (to 2.4 Mt/yr) and cable-and-belt conveying in case of large volume of transportation. For the Chinglusuai deposit situated in the upland country with large level difference, efficiency of cableway haulage with feasibility of energy recovery is substantiated.
Hard-to-access deposit, Arctic zone, industrial conveyance and hoistng facilities, hybrid mining, open pit mine, underground mine, computer-aided modeling, enviornmental constraint, technical-and-economic assessment
DOI: 10.1134/S1062739118044051
REFERENCES
1. Russian Federation Government Order No. 130 as of February 8, 2018 on Establishment of Khibiny National Park, Svod zakonov RF, 2018, no. 9, p. 1385.
2. Gromov, E.V., Improvement of Low-Grade Ore Mining under Ecological Constraints (in Terms of the Partomchorr Apatite–Nepheline Deposit), Cand. Tech. Sci. Synopsys, Apatity, 2016.
3. Lukichev, S.V., Gromov, E.V., Shibaeva, D.N., and Tereshchenko, S.V., Evaluating Efficiency of Ecologically Balanced Mining Technology for Strategic Partomchorr Deposit in the Arctic Zone of Russia, Gornyi Zhurnal, 2017, no. 12, pp. 57–62.
4. Grebenshchikov, A.L. and Palamarchuk, N.V., Cable Belts, Gorn. Prom., 2006, no. 4, pp. 15–16.
5. Lewis, A. and Grebenshchikov, A.L., Long Cable Belts, Gorn. Prom., 2005, no. 3, pp. 42–47.
6. Nagovitsyn, O.V. and Lukichev, S.V., Automated Engineering Tools of Mineframe Software, GIAB, 2013, no. 7, pp. 184–192.
7. Zemskov, A.N. and Poletaev, I.G., Overhead Freight Cableways—A Promising Mineral Transportation Facility, Proektirovanie, proizvodstvo i ekspluatatsiya mashin i mekhanizmov dlya gornodobyvayushchei promyshlennosti: sb. trudov (Engineering, Manufacture and Operation of Machines and Mechanisms for Mining Industry: Collected Works), Perm: PKI Gorneftemash, 2003, pp. 24–30.
8. Kuleshov, A.A., Vasil’ev, K.A., Dokukin, V.P., and Koptev, V.Yu., Variants of Ore Haulage from Open Pit Mine to Processing Plant at ALROSA, Gornyi Zhurnal, 2003, no. 6, pp. 13–16.
9. Bilin, A.L., Gromov, E.V., Toropov, D.A., Comparison of Transportation Schemes in Mineral Mining in Upland Conditions, GIAB, 2017, no 10 (Special issue 23), pp. 117–125.
OPTIMIZATION OF LONGWALL PARAMETERS IN UNDERGROUND MINING OF THICK METHANE-BEARING COAL SEAM IN THE SOKOLOVO DEPOSIT IN KUZBASS
A. A. Ordin, A. M. Timoshenko, D. V. Botvenko, A. A. Meshkovc, and M. A. Volkov
Institute of Computational Technologies, Novosibirsk, 630090 Russia
e-mail: ordin@misd.ru
VostNII Science Center, Kemerovo, 650002 Russia
SUEK-Kuzbass, Leninsk-Kuznetsky, 652507 Russia
The technical and economic feasibility of increasing the length of longwall 5003 in the the Yalevsky Mine to 400 m and raising output per face to 70 ths t per day in mining thick coal seam is substantiated. It is found that from the condition of the maximum annual profit of the mine, the optimized longwall length is 450 m, and the variants of the longwall lengths of 400 and 512 m are equivalent. The methane release calculations show that at the indicated length and production output of the longwall, it is predicted that methane concentration in return ventilation air is 0.53%, which means null gas criterion constraints.
Mine, coal seam, fractional composition, sorption, methane release, advance speed, productivity, sheare loader
DOI: 10.1134/S1062739118044063
REFERENCES
1. Tekhnicheskii proekt razrabotki Sokolovskogo kamennougol’nogo mestorozhdeniya. Otrabotka zapasov plastov 50 i 52 v granitsakh shakhtoupravleniya Kotinskaya OAO SUEK-Kuzbass s ob’edineniem seti gornykh vyrabotok shakht im. V. D. Yalevskogo i Kotinskaya. I etap. Dopolnenie no. 3 (Sokolovo Coal Deposit Development Project. Extraction of Coal Reserves from Seams 50 and 52 within Kotinskaya Mine Management limits with integration of underground excavations of the Yalevsky and Kotinskaya Mines. Stage I. Amendment 3), vol. 1, book 1, Kemerovo: NPTS VostNII, 2017.
2. Plotnikov, V.P., Deriving formulas for screw, drum or crown shearers, Ugol’, 2009, no. 9, pp. 5–7.
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4. Solod, V.I., Getopanov, V.N., and Metel’kov, A.A., Proektirovanie i konstruirovanie mashin i kompleksov (Design and Construction of Machines and Assemblies), Moscow: Nedra, 1982.
5. Ordin, A.A., Nikol’skii, A.M., and Metel’kov, A.A., Modeling and Optimization of Preparatory Work and Stoping in a Coal Mine Panel, J. Min. Sci., 2013, vol. 49, no. 6, pp. 941–949.
6. Vremennye ukazaniya po upravleniyu gornym davleniem v ochistnykh zaboyakh na plastakh moshchnost’yu do 3.5 m i uglom padeniya do 35° (Temporal Guidelines on Ground Control in Longwalls in Seams up to 3.5 m Thick at the Dip Angle to 35°), Leningrad: VNIMI, 1982.
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10. Ordin, A.A. and Timoshenko, A.M., Nonlinear Relationship between Coalbed Methane Release, Natural Methane Content and Kinematic Parameters of Cutting Picks of Shearers, J. Min. Sci., 2017, vol. 53, no. 2, pp. 311–316.
11. Semykin, Yu.A., Improvement of Coal Mining Safety through In-Situ Methane Release Intensification and Longwall Gas Content Prediction Technique Perfection, Cand Tech. Sci. Synopsys, Moscow: NITU MISIS, 2016.
A COMPARATIVE ASSESSMENT ON CEMENT RAW MATERIAL QUARRY QUALITY DISTRIBUTION VIA 3-D IDENTIFICATION
A. C. Ozdemir, A. Dag, and T. Ibrikci
Department of Mining Engineering, Cukurova University, Adana, Turkey
e-mail: acozdemir@cu.edu.tr
Department of Electrical and Electronics Engineering, Cukurova University, Adana, Turkey
In addition to capacity increase, quality also has critical importance in the cement industry. In a cement product process, the chemical properties based on the oxide composition are necessary in describing clinker characteristics. One of the most important parameters in cement product, Lime Saturation Factor (LSF) controls the ratio of alite to belite in the clinker and this factor is frequently used to evaluate the quality of cement. This study focuses on identifying LSF distribution in the site conditions. For this purpose, probabilistic (geostatistical) and non-probabilistic (neural network-based) algorithms have been used. 3D based analyses revealed some relationships in the site conditions. The accuracy studies performed by performance indicators specified that the non-probabilistic methods produced better statistical prediction capacity. Thus, the adaptive neural algorithms can ensure the results identify the quality distribution in connection with geological parameters.
Cement, quarry, lime saturation factor, geostatistics, neural network
DOI: 10.1134/S1062739118044075
REFERENCES
1. Tutmez, B., A Data-Driven Study for Evaluating Fineness of Cement by Various Predictors, Int. J. Mach. Learn. & Cyber, 2015, 6, pp. 501–510.
2. Sorrentino, F., Lime Saturation Factor: New Insight, Cement WapnoBeton, 2008, 2, pp. 82–88.
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NEW SUPPORT SUGGESTIONS TO HIGH SWELLING CLAYEY ROCK MASS
G. G. Uyar and C. O. Aksoy
Department of Mining Engineering, Hacettepe University, Faculty of Engineering 06800 Beytepe, Ankara, Turkey
e-mail: gulsevuyar@hacettepe.edu.tr
Department of Mining Engineering, Dokuz Eylul University, Faculty of Engineering 35390 T?naztepe, Izmir, Turkey
The prediction of possible deformation in squeezing and swelling rocks in underground openings is presented. This article discusses the application and results of a urea–silica type chemical injection application to restrict the deformations in a U-shaped gallery opened in a rock mass having high swelling properties in an underground coal mine in the Eynez region, Soma (Turkey). The deformation problem before chemical injection, diligent application of a numerical model, prevention of deformation by chemical injections, and confirmation of this prevention by numerical model were examined and compared with field results. Numerical modeling study shows that high-deformations can be prevented. Rock borehole pressuremeter experiments were performed to determine the deformation modulus before and after chemical injections. The numerical model was analyzed and estimated using the results obtained from the in-situ experiments.
Chemical injection, rock bolt, swelling and squeezing rocks, deformation
DOI: 10.1134/S1062739118044087
REFERENCES
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USE OF DRAGLINES IN MINING DIAMOND ORE DEPOSITS IN YAKUTIA
V. I. Cheskidov, A. N. Akishev, and G. G. Sakantsev
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
e-mail: cheskid@misd.ru
Yakutniproalmaz Institute, ALROSA, Mirny, 678174 Russia
e-mail: AkishevAN@alrosa.ru
Institute of Mining, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620075 Russia
e-mail: yakovlev@igduran.ru
Potential ranges of use of draglines at steeply dipping diamond ore deposits in Yakutia are discussed. Technology of stripping with direct dumping and rehandling by draglines is substantiated for upper overburden layers. A variant of increasing height of stripping benches on haulage horizons through the use of draglines and crane lines is discussed. A resource saving technology is proposed for mining roundish and extended ore bodies with alternating advance of mining front and with internal dumping. The method of estimating efficient thickness of overburden in case of direct dumping is developed using the layer coefficient of overburden rehandling. Expediency of using blasting for displacement of broken overburden to internal dump is specified.
Steeply dipping deposits, open pit mining, direct dumping, dragline, overburden, internal dumps, throw blast
DOI: 10.1134/S1062739118044099
REFERENCES
1. Chaadaev, A.S., Zyryanov, I.V., and Bondarenko, I.F., Diamond Ore Mining and Processing Technologies at ALROSA: Current Condition and Development Prospects, Gorn. Prom., 2017, no. 22, pp. 6–13.
2. Akishev, A.N., Bondarenko, I.F., Babaskin, S.L., Current State and Development Trends of Open Pit Mining Method At Diamond Ore Deposits of ALROSA, Problems and Ways of Efficient Diamond Production: Int. Conf. Proc., Mirny, 2011.
3. Chaadaev, A.S., Cherepanov, A.I., Zyryanov, I.V., and Bondarenko, I.F., Promising Ways of Technological Development in Diamond Ore Mining and Processing at ALROSA, Gornyi Zhurnal, 2016, no. 2, pp. 56–61.
4. Pismenny, A., Chaadaev, A., Akishev, Al., Bondarenko, I., and Babaskin, S., Innovative Technologies at Open-Cast Mining of Diamond Ore Deposits, Innovations and Nanotechnologies in Russia, 2012, No. 1(2), pp. 38–39.
5. Pronoza, V.G., Voronkov, V.F., and Gvozdkova, T.N., Efficient Application Ranges for Dumping with Truck-and-Shovel and Rehandling in the Southern Kuzbass, Vestn. KuzGTU, 2004, no. 3, pp. 41–44.
6. Cheskidov, V.I., Norri, V.K., and Sakantsev, G.G., Diversification of Open Pit Coal Mining with Draglining, J. Min. Sci., 2014, vol. 50, no. 4, pp. 690–695.
7. Vlasov, V.M. and Androsov, A.D., Tekhnologii otkrytoi dobychi almaza v kriolitozone (Open Pit Diamond Ore Mining Technologies in the Permafrost Zone), Yakutsk: YANS SO RAN, 2007.
8. Kortelev, O.B., Cheskidov, V.I., Molotilov, S.G., and Norri, V.K., Otkrytaya razrabotka ugol’nykh plastov s peremeshcheniem gornoi massy ekskavatorami-draglainami (Open Pit Coal Mining with Rehandling by Draglines), Novosibirsk, 2010.
9. Litvin, Ya.O., Evaluation of Temporal Dumping Conditions in Stage-Wise Overburden Rehandling by Trucks in Open Pit Mines in Kuzbass, Synopsys of Cand Tech. Sci. Thesis, Kemerovo, 2011.
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12. New P&H Dragline System Improves Dragline Productivity up to 30 %. Available at: https://mining-media.ru/ru/article/67-go/1259-kranlajny-gornogeologicheskie-i-tekhnologicheskie-predposylki-effektivnogo-primeneniya.
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MINE AEROGASDYNAMICS
IMPROVING EFFICIENCY OF TUNNEL FAN CONTROL IN SHALLOW SUBWAY
D. V. Zedgenizov and N. A. Popov
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
e-mail: popov@misd.ru
The data of the full-scale experiment on adjustment of VOMD-24 fan rotor speed with a view to controlling the fan efficiency under impact of the piston effect are presented. The reduction in actual air flow rate at the passenger platform of subway due to decreased fan efficiency is estimated at different intensity of traffic along the subway line. The algorithm of the tunnel fan rpm adjustment per day in conformity with the train traffic density and the architecture of automated control of the tunnel fan efficiency by frequency transducer are proposed.
Tunnel fan, rotor speed, air flow rate, piston effect
DOI: 10.1134/S106273911804411
REFERENCES
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MINERAL DRESSING
INTENSIFICATION OF EUDIALYTE CONCENTRATE LEACHING BY NANOSECOND HIGH-VOLTAGE PULSES
V. A. Chanturia, I. Zh. Bunin, M. V. Ryazantseva, E. L. Chanturia, A. L. Samusev, E. V. Koporulina, and N. E. Anashkina
Academician Melnikov Research Institute of Comprehensive Exploitation of Mineral Resources,
Russian Academy of Sciences, Moscow, 111020 Russia
e-mail: vchan@mail.ru
e-mail: bunin_i@mail.ru
The mechanism of weakening and directional change in structural and chemical properties of eudialyte under nonthermal exposure to nanosecond high-voltage electromagnetic pulses and nitric–acid leaching is studied. The methods of X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, scanning electron microscopy and microhardness measurement are used. The rational mode of high-energy pulsed treatment is determined. After such mode treatment, the acid leaching of eudialyte concentrate results in recovery of zirconium and total rare earth elements higher by 1.7 and 1.4 times as against reference standards.
Eudialyte, XPS, FTIR, SEM, structural and chemical properties, microhardness, high-power electromagnetic pulses, leaching
DOI: 10.1134/S106273911804423
REFERENCES
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27. Bunin, I.Zh., Chanturia, V.A., Anashkina, N.E., and Ryazantseva, M.V., Experimental Validation of Mechanism of Pulsed Energy Effect on Structure, Chemical Properties and Microhardness of Rock-Forming Minerals of Kimberlites, J. Min. Sci., 2015, vol. 51, no. 4, pp. 799–810.
28. Kuznetsov, S.K., Svetova, E.N., Shanina, S.N., and Filippov, V.N., Minor Elements in Quartz from Hydrothermal-Metamorphic Veins in the Nether Polar Ural Province, Geokhimiya, 2012, no. 9, pp. 1–16.
MINERALOGICAL AND TECHNOLOGICAL ASSESSMENT OF TIN–SULFIDE MINING WASTE DRESSABILITY
T. S. Yusupov, S. A. Kondrat’ev, S. R. Khalimova, and S. A. Novikova
Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
e-mail: yusupov@igm.ns.ru
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
e-mail: kondr@misd.nsc.ru
Institute of Economics and Industrial Engineering, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
e-mail: sophiakh@academ.org
Mineralogical composition, structural changes and floatability of minerals in the content of the Novosibirsk Tin Works waste are examined. It is shown that casserite is totally unfloatable after long stay in tailings pond, while iron sulfides preserve flotation ability despite the fact that their structure is partly X-ray amorphous. Combining key beneficiation techniques allows production of concentrates with the tin content of 10% and higher, though the tin recovery is no more than 17.2% in this case, which prevents from recommending the combination dressing for application. In the article, the flotation circuit producing tin concentrate at the yield of 5% and recovery of 80%, which meets the requirements of fuming process and electric melting, is proposed and substantiated.
Mining waste minerals, casserite, tin, concentrate, dressing, flotation, magnetic separation
DOI: 10.1134/S106273911804435
REFERENCES
1. Chanturia, V.A., Vaisberg, L.A., and Kozlov, A.P., Priority Directions of Research in the Field of Processing of Mineral Raw Materials, Obogashch. Rud, 2014, no. 2, pp. 3–9.
2. Lebedev, I.S., D’yakov, V.E., and Terebenin, A.N., Kompleksnaya metallurgiya olova (Complex Metallurgy of Tin), Novosibirsk: Novosibirskiy pisatel’, 2004, 548 p.
3. Yusupov, T.S., Kondrat’ev, S.A., and Baksheeva, I.I., Production-Induced Cassiterite-Sulfide Mine Waste Minerals Structural-Chemical and Technological Properties, Obogashch. Rud, 2016, no. 5, pp. 26–31.
4. Larionov, A.N., Terent’eva, E.A., Kanarskaya, A.V., and Vorob’ev, V.V., Dry Ore Preparation Methods: New Prospects, Proceedings of the 10th Congress of Ore Dressers of the CIS Countries, Ìoscow, 2015, pp. 497–500.
5. Yusupov, T.S., Baksheeva, I.I., and Rostovtsev, V.I., Analysis of Different Type Mechanical Effects on Selectivity of Mineral Dissociations, J. Min. Sci., 2015, vol. 51, no. 6, pp. 1248–1253.
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7. Gazaleeva, G.I., Nazarenko, L.I., Shigaeva, V.I., and Vlasov, N.A., Features of Processing Tin-Bearing Tailings at the of Solnechny Mining and Processing Plant, J. Min. Sci., 2018, vol. 54, no. 3, pp. 491–496.
8. Tverdov, À.À., Zhura, A.V., and Nikishichev, S.V., Improvement of the Deposit Development Budgetary Efficiency Estimation and Socio-Economic Macro-Effect Valuation Method, Nedropolz.-XXI Vek, 2013, no. 3 (40), pp. 86–91.
DRESSABILITY OF OLD GOLD-BEARING TAILINGS BY FLOTATION
V. I. Bragin, E. A. Burdakova, A. A. Kondrat’eva, A. A. Plotnikova, and I. I. Baksheeva
Siberian Federal University, Krasnoyarsk, 660041 Russia
e-mail: vic.bragin@gmail.com
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk,
660036 Russia
The research results on floatability of old gold-bearing tailings are presented. The complex material composition and process features of processing waste are governed by difference in treatment of various ore types (sulfide, oxidized and mixed) at processing plant, as well as with supergene processes in the tailings pond. Feasibility of re-flotation of tailings is discussed. It is found that short-term mechanical activation of tailings in a mill with the subsequent flotation (at the adjusted reagent mode as against the current technology) results in gold recovery of 29.0 to 45.4% in flotation concentrate at the residue content of metal in rejects at the level of 0.2–0.3 g/t.
Flotation, old tailings, mining waste, reagent mode, recovery, tailings pond, dressability study
DOI: 10.1134/S106273911804447
REFERENCES
1. Chanturia, V.A., Innovation Methods in Mineral Processing Technologies of Ores with Complex Composition, GIAB, 2009, vol. 15, no. 12, pp. 9–25.
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4. Maboeta, M.S., Oladipo, O.G., and Botha, S.M., Ecotoxicity of Mine Tailings: Unrehabilitated Versus Rehabilitated, Bulletin of Environmental Contamination and Toxicology, 2018, vol. 100, no. 5, pp. 702–707.
5. Sudibyo, Aji B. B., Sumardi, S., Mufakir, F.R., Junaidi, A., Nurjaman, F., Karna, and Aziza, A. Taguchi Optimization: Case Study of Gold Recovery from Amalgamation Tailing by Using Froth Flotation Method, AIP Conference Proceedings, 2017, vol. 1805, no. 1, id 050003.
6. Evdokimov, S.I. and Evdokimov, V.S, Placer Mining Waste Processing Technology, Ekol. Promysh. Rossii, 2017, vol. 21, no. 9, pp. 10–15.
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8. Bekturganov, N.S., Arystanova, G.A., Koizhanova, A.K., and Erdenova, M.B., Comparative Study of the Methods for Gold Recovery from Man-Made Flotation Tailing, Tsvet. Met., 2016, no. 10, pp. 69–72.
9. Zinchenko, Z.A. and Tyumin, I.A., Rresearches of Gold Extraction from Flotation Tailings of Djijicrut Deposit Narrow Level by Thiourea, Dokl. Akad. Nauk Resp. Tajikistan, 2013, vol. 56, no. 10, pp. 796–800.
10. Bogdanovich, A.V., Vasil’ev, A.M., Shneerson, Ya.M., and Pleshkov, M.A., Recovery of Gold from Old Tailings of Copper-Zink-Pyrite Ores, Obogashch. Rud, 2013, no. 5, pp. 34–44.
11. Zelenov, V.I., Metodika issledovaniya zoloto- i serebrosoderzhashchikh rud (Gold- and Silver-Bearing Ore Research Techniques), Moscow: Nedra, 1989.
12. Algebraistova, N.K., Alekseeva, E.A., and Kolyago, E.K., Mineralogy and Processing Technology of Old Tailings from Artem’evskaya Gold Recovery Plant, GIAB, 2000, no. 6, pp. 191–197.
13. Lygach, V.N., Ladygina, G.V., Samorukova, V.D., and Shubuderov, A.V., Additional Recovery of Gold from Tailings of Poor Gold-Bearing Ores of the Southern Urals. http://www.giab-online.ru//files/Data /2007/8/25_Ligach24.pdf.
14. Meimanova, Zh.S. and Nogaeva, K.A., Investigation of Flotation Processing of Old Tailings from PF Solton-Sary, Nauka Nov. Tekhnol., 2014, no. 2, pp. 15–16.
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16. Bragina, V.I. and Konnova, N.I., Recovery of Valuable Minerals from Tailings, GIAB, 2011, no. 12, pp. 165–169.
17. Alekseev, V.S. and Banshchikova, T.S., Rebellious Gold Extraction from Gravity Concentrates and Placer Tailings by Chemical Reagents, J. Min. Sci., 2017, vol. 53, no. 4, pp. 756–761.
18. Chanturia, V.A., Kozlov, A.P, Matveeva, T.N., and Lavrinenko, A.A., Innovative Technologies and Extraction of Commercial Components from Unconventional and Difficult-to-Process Minerals and Mining-and-Processing waste, J. Min. Sci., 2012, vol. 48, no. 5, pp. 904–913.
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TREATMENT TECHNOLOGY FOR NIOBIUM-BEARING ORE PROCESSING WASTEWATER OF VARIOUS IONIC–DISPERSION COMPOSITIONS
V. F. Skorokhodov, S. P. Mesyats, V. V. Biryukov, and S. P. Ostapenko
Mining Institute, Kola Science Center, Russian Academy of Sciences, Apatity, 184209 Russia
e-mail: skorohodov@goi.kolasc.net.ru
Based on the studies into ionic–dispersion compositions of sewage water after mining and processing of niobium ore of the Lovozero deposit, it is substantiated to be expedient to convert some pollution agents from solution to suspension state. A combined process is proposed for treatment of mine wastewater, which is 94% of total sewage water of mining and processing, by integrating coagulation, sorption and flotation techniques. The mathematical model of aggregation of suspension particles with regard to the hydrodynamic mode of coagulation is suggested. The model makes it possible to predict material and dispersion compositions of a new multi-phase system under different temperatures towards automation of the wastewater treatment process. The solution on forming surface properties of activated aqueous dispersions of air using a modified finely dispersed sorbent with intent to intensify the wastewater purification process.
Niobium-bearing ore, integrated wastewater treatment, flotation, activated aqueous air dispersion, sorption, coagulation, modeling
DOI: 10.1134/S106273911804459
REFERENCES
1. Gershenkop, A.Sh., Skorokhodov, V.F., Sulimenko, L.P., and Kreimer, L.L., Intensification of Waste Water Purification Processes, GIAB, 2000, no. 3l, pp. 167–170.
2. Mesyats, S.P. and Ostapenko, S.P., Estimation of Contents and State of Niobium in Wastewaters Generated by Rare Metals Processing at the Lovozero Deposit for Substantiation of Purification Method, GIAB, Special Issue, 2014, no. 12, pp. 20–27.
3. Mesyats, S. and Ostapenko, S., Substantiation of Sorption Method for Removing Niobium from Sewage Water after Rare-Metal Ores Processing, Int. Multidisciplinary Scientific GeoConference SGEM, 2016, Book 5, Vol. II, pp. 783–790.
4. Vlasov, K.A., Kuzmenko, M.V., and Es’kova, E.M., Levozerskii shchelochnoi massiv: porody, pegmatity, mineralogia, geokhimia i genezis (Levozero Alkaline Massif: Rocks, Pegmatites, Mineralogy and Origin), Moscow, AN SSSR, 1959.
5. Ivanov, V.V., Ekologicheskaya geokhimiya elementov (Ecological Geochemistry of Elements: Reference Book), vol. 5: Rare d-Elements, Moscow, Ekologia, 1997.
6. Deblonde, G.J., Moncomble, A., Cote, G., Belair, S., and Chagnes, A., Experimental and Computational Exploration of the UV-Visible Properties of Hexaniobate and Hexatantalate Ions, RSC Advances, 2015, 5 (10), pp. 7619–7627.
7. Deblonde, G.J., Moncomble, A., Cote, G., et al., RSC Adv., 2014, pp. 1–3; RSC Adv., 2015, no. 5, pp. 64119–64124.
8. Nyman, M., Polyoxoniobate Chemistry in the 21st Century, Dalton Trans, 2011, no. 40, pp. 8049–8058.
9. Klemperer, W.G., and Marek, K. A. An 17O NMR Study of Hydrolyzed Nbv in Weakly Acidic and Basic Aqueous Solutions, Eur. J. Inorg. Chem., 2013, pp. 1762–1771.
10. Wang, X., Zheng, S., Xu H., and Zhang, Y. Leaching of Niobium and Tantalum from a Low-Grade Ore Using a KOH Roast–Water Leach System, Hydrometallurgy, 2009, 98, pp. 219–223.
11. Huang, P., Qin, C., Su, Z.-M., et al., Self-Assembly and Photocatalytic Properties of Polyoxoniobates: {Nb24O72}, {Nb32O96}, and {K12Nb96O288} Clusters, J. Am. Chem. Soc., 2012, 134 (34), pp. 14004–14010.
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13. Gartman, T.N. and Klushin, D.V., Osnovy komp’yuternogo modelirovania khimiko-tekhnologicheskikh protsessov (Fundamentals of Computer Modeling of Chemical-Technological Processes: Textbook for Colleges), Moscow: Akademkniga, 2006.
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15. Lukashev, Å.À., Moiseev, À.V., and Draginsky, V.L., Formation, Growth and Disintegration of Coagulant Flakes during Treatment of Natural Water. Mathematical Reconstruction of Process Flow, Teor. Prikl. Probl. Servisa, 2004, no. 4, pp. 37–46.
16. Romanovsky, B.V., Osnovy khimicheskoy kinetiki (Basic Principles of Chemical Kinetics), Moscow, Ekzamen, 2006. .
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18. Mel’nikov, N.N, Skorokhodov, V.F., Mesyats, S.P., and Ostapenko, S.P., RF patent no. 2320548, Byull. Izobret., 2008, no. 9.
INFLUENCE OF SURFACE PROPERTIES OF MINERALS ON REBELLIOUS ORE DISINTEGRATION
V. S. Portnov, V. M. Yurov, and A. D. Mausymbaeva
Karaganda State Technical University, Karaganda, 100000 Kazakhstan
e-mail: aliyua_maussym@mail.ru
Buketov Karaganda State University, Karaganda, 100028 Kazakhstan
The processes of rebellious ore disintegration with regard to the surface properties of minerals and rocks are discussed. The methods are proposed for the experimental determination of surface tension of solids during evaluation of dispergating efficiency, and the calculation procedure of the surface layer thickness during ore disintegration is offered. The calculations of the fusion temperatures of nanoparticles obtained in nonconventional disintegration of rebellious ore are presented. The calculations are performed for the nanoparticles with possible content of the most metals from the periodic chart.
Ore disintegration, mineral, surface tension, surface layer thickness, fusion temperature, nanoparticles
DOI: 10.1134/S106273911804460
REFERENCES
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5. Portnov, V.S. and Yurov, V.S., Connection between Magnetic Susceptibility of Magnetite Ores and Thermodynamic Parameters and Content of Iron, Gornyø Zhurnal, 2004, no. 6, pp. 122–127.
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11. Yurov, V.M., Eshchanov, A.N., and Kuketaev, A.T., RK patent no. 57691, Byull. Izobret. RK, 2008, no. 12.
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13. Panin, V.E., Egorushkin, V.E., Makarov, P.V., and Grinyaev, Y.V., Fizicheskaya mezomekhanika i komp’yuternoe konstruirovanie materialov (Physical Mesomechanics and Computer-Aided Design of Materials), Novosibirsk: Nauka, 1995.
14. Komov, I.L., Radiotsionnaya mineralogiya i geokhimiya (Radiation Mineralogy and Geochemistry), Kiev: Nauk. dumka, 2006.
15. Bunin, I.Zh., Theoretical Fundamentals of Nanosecond Electromagnetic Pulse Effect on Disintegration and Exposure of Finely-Dispersed Mineral Complexes and Recovery of Noble Metals from Ores, Doc. Tech. Sci. Thesis, Moscow, RGGRU, 2009.
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17. Zhu, X., Structural Investigation of Nanocrystalline Materials, PhD Thesis, Germany, Saarbrucken: University of Saarbrucken, 1986.
18. Sui, M.L. and Lu, K., Thermal Expansion Behavior of Nanocrystalline Ni-P Alloys of Different Grain Size, Nanostruct. Mater., 1995, vol. 6, no. 5–8, pp. 651–654.
19. Makarov, G.N., Experimental Methods for Determining the Melting Temperature and the Heat of Melting of Clusters and Nanoparticles, UFN, 2010, vol. 180, no. 2, pp. 185–207.
20. Shesternev, D.M., Myazin, V.P., and Tataurov, S.B., Study of Cryogenic Disintegration of Gold-Quartz Ores to Intensify the Heap Leaching of Gold, J. Min. Sci., 2006, vol. 42, no. 1, pp. 91–98.
MINING ECOLOGY
PREDICTION OF THE ENVIRONMENTAL IMPACT OF MINING INDUSTRY BASED ON SATELLITE OBSERVATIONS
S. P. Mesyats and S. P. Ostapenko
Mining Institute, Kola Science Center, Russian Academy of Sciences, Apatity, 184209 Russia
e-mail: mesyats@goi.kolasc.net.ru
Environmental impact of mining is studied by two criteria: aerosol pollution and vegetation cover condition—using the data of long-term satellite observations. In terms of the mining and processing industry on the Kola Peninsula, environmental impact is predicted as overlapping of aerosol pollution areas and decrease in the vegetation index. It is shown that predicted boundaries of impact-zones match in case of one or two sources of effect, and unmatch in case of many sources. The proposed approach to integration of the remote sensing data allows differentiating between the environmental impact of mining and natural change of the vegetation cover.
Mine, man-made aerosol effect, vegetation cover, satellite observation, vegetation index, geoinformation system, prediction
DOI: 10.1134/S106273911804472
REFERENCES
1. Jain, R.K., Cui, Z., and Domen, J.K., Environmental Impact of Mining and Mineral Processing, Butterworth-Heinemann, 2016.
2. Chuvieco, E., Fundamentals of Satellite Remote Sensing, an Environmental Approach, CRC Press, 2016.
3. Oparin, V.N., Potapov, V.P., Giniyatullina, O.L., Bykov, A.A., and Schastlivtsev, E.L., Integrated Monitoring of Induced Air Pollution in Mining Regions, J. Min. Sci., 2017, vol. 53, no. 5, pp. 945–953.
4. Kar, B. and Chow, E., Fusion of Multiscaled Spatial and Temporal Data: Techniques and Issues, Integrating Scale in Remote Sensing and GIS, Quattrochi, D.A., Wentz, E.A., Lam, Nina Siu-Ngan, Emerson, C.W. (Eds.), CRC Press. Routledge, 2017.
5. Gamba, P. and Dell’Acqua, F., Data Fusion Related to GIS and Remote Sensing, Integration of GIS and Remote Sensing, Mesev, V. (Ed.), John Wiley & Sons Ltd, 2007.
6. Lovelius, N.V., Izmenchivost’ prirosta derev’ev. Dendroindikatsiya prirodnykh protsessov i antropogennykh vozdeistvii (Variability of Tree Growth. Dendroindication of Natural Processes and Anthropogenic Impacts), Leningrad: Nauka, 1979.
7. Jordan, C.F., Derivation of Leaf-Area Index from Quality of Light on the Forest Floor, Ecology, 1969, vol. 50, no. 4, pp. 663–666.
8. Rouse, Jr J. W., Hass, R.H., Schell, J.A., and Deering, D.W., Monitoring Vegetation Systems in the Great Plains with ERTS, Proc. 3rd Earth Resources Technology Satellite Symposium, Washington, NASA Goddart Space Flight Center, 1974, vol. 1, pp. 309–317.
9. Boyd, D.S. and Danson, F.M., Satellite Remote Sensing of Forest Resources: Three Decades of Research Development, Progress in Physical Geography, 2005, vol. 29, 1–26.
10. Wessels, K.J., Prince, S.D., Frost, P.E., and van Zyl, D., Assessing the Effects of Human-Induced Land Degradation in the Former Homelands of Northern South Africa with a 1 km AVHRR NDVI Time-Series, Remote Sens. Environ., 2004, vol. 91, no. 1, pp. 47–67.
11. Conijn, J., Bai, Z., Bindraban, P., and Rutgers, B., Global Changes of Net Primary Productivity, Affected by Climate and Abrupt Land Use Changes since 1981, Towards Mapping Global Soil Degradation, Report 2013/01, ISRIC–World Soil Information, Wageningen, ISRIC Report 1.
12. Kalabin, G.V., Qualitative Assessment of Vegetation in Disturbed Mining-and-Metallurgical Areas by the Remote and Surface Monitoring, J. Min. Sci., 2011, vol. 47, no. 4, pp. 539–546.
13. Bondur, V.G. and Vorobev, V.E., Satellite Monitoring of Impact Arctic Regions, Izvestiya. Atmospheric and Oceanic Physics, 2015, vol. 51, no. 9, pp. 949–968.
14. Yue, X. and Unger, N., Aerosol Optical Depth Thresholds as a Tool to Assess Diffuse Radiation Fertilization of the Land Carbon Uptake in China, Atmos. Chem. Phys., 2017, no. 17, pp. 1329–1342.
15. Xiao, X., Braswell, B., Zhang, Q., Boles, S., Frolking, S., and Moore III, B., Sensitivity of Vegetation Indices to Atmospheric Aerosols: Continental-Scale Observations in Northern Asia, Remote Sensing of Environment, 2003, vol. 84, pp. 385–392.
16. Mesyats, S.P. and Ostapenko, S.P., Satellite Data Based Assessment of Environment Impact of Mining Industry, Int. Multidisciplinary Scientific GeoConference SGEM, 2017, vol. 17, no. 41, pp. 551–558.
17. Mesyats, S.P., Ostapenko, S.P., and Zorin, A.V., Methodological Approach to the Assessment of Technology-Related Aerosol Pollution Based on Satellite Observations: Case Study of the Mineral Mining and Processing Complex in the Murmansk Region, Gorn. Promysh., 2016, no 6, pp. 69–73.
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ASSESSMENT OF PARTICULATE AND TRACE ELEMENT POLLUTION IN AIRBORNE DUST AROUND. A. HIGHLY MECHANIZED OPENCAST COAL MINE IN TALCHER, ODISHA
D. P. Tripathy and T. R. Dash
National Institute of Technology, Rourkela, 769008 India
e-mail: debi_tripathy@yahoo.co.in
Particulate pollution is considered as one of the important environmental problems in coal mining area. The particulate matter (PM) not only affects human, but also degrade the nearby vegetation and the ecological environment in many ways. This fetches the attention of researchers many times all over the world to work on the issue. Talcher coal field is one of the oldest coalfields of India with a very high coal deposit. In this study monitoring of respirable PM (PM10& PM2.5) has been performed at eight monitoring stations around a high mechanized opencast coalmine for two seasons i.e., summer and winter. Samples were collected as per the standard criteria of Central Pollution Control Board (CPCB), New Delhi, India. The study on the seasonal variations of PM concentration confirmed the high concentration of PM in the winter season as compared to the summer season. A total of 10 trace elements were analyzed and selected for source apportionment of PM and heavy metal. Statistical techniques such as Principal Component Analysis (PCA), and correlation analysis were deployed for source identification and respective contribution to PM. The major sources of trace metals and PM were mainly from coal mining and associated activities, and from vehicular emission in the study area.
PM10, PM2.5, trace metals, PCA, correlation analysis
DOI: 10.1134/S1062739118044784
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