№61-06

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The issue of increasing the efficiency of mining on sloping layers

Ya. Shavarskyi1

1Company “Jarad”, Sosnice, Poland

Coll.res.pap.nat.min.univ. 2020, 61:66-77

https://doi.org/10.33271/crpnmu/61.066

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ABSTRACT

Purpose. Based on the analysis, the dependences that take into account the intensity of the rock mass in order to establish the rational parameters of the sections of mechanized fastening during the operation of two paired wallfaces.

Research methods arepresented in the analysis, systematization of the existing experience of concentration of mining in coal mines on seams with a thickness up to 1.5 m; depending on the geological and mining conditions, a simulation model of the overburden rock mass is proposed using the SolidWorks 2019 application package. Based on the obtained reduced stresses, a geomechanical model of the rock mass was formed for the real conditions of paired lavas in the n7n seams in the mine of the SE “Lvivuhilla”. These results make it possible to establish the basic principles of rock pressure control and the load on the lining of mechanized complexes. This allows you to efficiently develop coal reserves at the appropriate technical, technological and economic levels.

Findings. The current state and possibilities of concentration of mining at mines of Ukraine are considered; also as methods, system information products and approaches to setting stresses in the rock mass. A model of the rock mass behavior during extracting the mine field by paired wallfaces has been developed. The main deformation characteristics of the rock mass management depending on the mining and geological conditions of occurrence and mining parameters of the coal mining process are established. The directions of improvement of technical and technological maintenance and features of execution of fastening in wallfaces are offered.

Scientific originality. System influence between separate sources of stresses for a choice of expedient ways of management of rock pressure at extraction the coal seams to 1,5 m by paired wallfaces in concrete mining and geological conditions of mine of SE "Lvivuhilla" are reflected.

Practical implications. With the help of the package of applied information programs "SolidWorks 2019" a simulation model of the minefield with two paired wallfaces was created, the stress-strain state of the rock mass was assessed, which allowed to offer rational parameters of mining operations and effectively manage rock pressure for mining and geological conditions on the mines of the Lviv-Volyn coal deposit.

Keywords: coal seam, paired wallface, data processing methods, information application package, simulation model, assessment of stress-strain state of the rock mass.

References:

  1. Pivniak, H.H., Beshta, O.S., Shashenko, O.M., Kuzmenko, O.M., Falshtynskyi, V.S., Tabachenko, M.M., Solodiankin, O.V., & Balakhontsev, O.V. (2010). Tendentsii rozvytku tekhnolohii ta system enerhozberezhennia pry vydobuvanni enerhetychnoi syrovyny. Natsionalnyi hirnychyi universytet.
  2. Dychkovskyi, R.O. (2009). Vysokomekhanizovane vyimannia tonkykh vuhilnykh plastiv v zonakh strukturnykh zmin hirskoho masyvu Lvivsko-Volynskoho baseinu. Natsionalnyi hirnychyi universytet.
  3. Abramkin, N.I., Dorodnyi, A.V., & Bukharbaiev, I.U. (2019). Analysis of the integrated technology of high-performance development of reserves of excavation sites of coal mines. Ugol, (1-2019(1114)), 40-45.
    http://doi.org/10.18796/0041-5790-2019-1-40-45
  4. Prusek, S., Lubosik, Z., Rajwa, S., Walentek, A., & Wrana, A. (2017). Geotechnical monitoring of rock mass and support behaviour around the UCG georeactor: Two case studies in Polish coal mining industry. International Conference on Ground Control in Mining, 321-328.
  5. Pivniak, H.H., Beshta, O.S., Pilov, P.I, Kuzmenko, O.M., Shkrabets, F.P., Tabachenko, M.M., Falshtynskyi, V.S., Salli, S.V., Ostapchuk, O.V., Pilova, K.P., Kovrov, O.S., Avdiushchenko, A.S., & Churikanova O.Yu. (2011). Ekolohichna ta ekonomichna skladovi vykorystannia heotekhnichnykh system Ukrainy. Natsionalnyi hirnychyi universytet.
  6. Falshtynskyi, V.S., Dychkovskyi, R.O., Saik, P.B., Lozynskyi, V.H., & Cabana, E.C. (2017). Formation of thermal fields by the energy-chemical complex of coal gasification. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (5), 36-42.
  7. Hoek E. (1987). Practical Rock Engineering.Institution of Mining and Metallurgy.
  8. Pivnyak, G., Dychkovskyi, R., Smirnov, A., & Cherednichenko, Y. (2013). Some aspects on the software simulation implementation in thin coal seams mining. Energy Efficiency Improvement of Geotechnical Systems, 1-10.
    https://doi.org/10.1201/b16355-2
  9. Dychkovskyi, R., Falshtynskyi, V., Ruskykh, V., Cabana, E., & Kosobokov, O. (2018). A modern vision of simulation modelling in mining and near mining activity. E3S Web of Conferences, (60), 00014.
    https://doi.org/10.1051/e3sconf/20186000014
  10. Falshtynskyi V, Dychkovskyi R, Lozynskyi V, Saik P. (2015). Analytical, laboratory and bench test researches of underground coal gasification technology in National Mining University. New Developments in Mining Engineering, 97-106.
  11. Pivnyak, G., Dychkovskyi, R., Bobyliov, O., Cabana, E. C., & Smoliński, A. (2018). Mathematical and Geomechanical Model in Physical and Chemical Processes of Underground Coal Gasification. Solid State Phenomena, 277, 1–16.
    https://doi.org/10.4028/www.scientific.net/ssp.277.1
  12. Dychkovskyi, R.O. (2013). Naukovi zasady syntezu tekhnolohii vidobuvannia vuhillia iz tonkykh ta nadtonkykh plastiv u slabometamorfizovanykh porodakh pratsiuvannia. Natsionalnyi hirnychyi universytet.
  13. Pivnyak, G.G., & Shashenko, O.M. (2015). Innovations and safety for coal mines in Ukraine. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (6), 118-121.
  14. Dychkovskyi, R., Vladyko, O., Maltsev, D., & Cáceres Cabana, E. (2018). Some aspects of the compatibility of mineral mining technologies. Rudarsko Geolosko Naftni Zbornik, 33(4), 73-82.
    https://doi.org/10.17794/rgn.2018.4.7
  15. Lozynskyi, V., Dychkovskyi, R., Saik, P., Falshtynskyi, V. (2018). Coal Seam Gasification in Faulting Zones (Heat and Mass Balance Study). Solid State Phenomena, (277), 66-79.
    https://doi.org/10.4028/www.scientific.net/SSP.277.66
  16. Falshtynskyi, V., Lozynskyi, V., Saik, P., Dychkovskyi, R., & Tabachenko, M. (2016). Substantiating parameters of stratification cavities formation in the roof rocks during underground coal gasification. Mining of Mineral Deposits, 10(1), 16–24.
    https://doi.org/10.15407/mining10.01.016
  17. Dychkovskyi, R., Avdiushchenko, A., Lozynskyi V. (2017) Some Economic Indicators of Coal Mining from Thin Seams. Trans Tech Publication Ltd: Advanced Engineering Forum: Sustainable Development of Industrial Regions, 13-21.Retrieved from
    https://www.scientific.net/AEF.22.13
  18. Dychkovskyi, R.O., Lozynskyi, V.H., Saik, P.B., Dubiei, Y.V., Cáceres Cabana, E., & Shavarskyi, I.T. (2019). Technological, lithological and economic aspects of data geometrization in coal mining.Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (5), 22-28.
    https://doi.org/10.29202/nvngu/2019-5/4
  19. Dychkovskyi, R., Shavarskyi, Ia., Saik, P., Lozynskyi, V., Falshtynskyi, V., & Cabana, E. (2020). Research into stress-strain state of the rock mass condition in the process of the operation of double-unit longwalls. Mining of Mineral Deposits, 14(2), 85-94.
    https://doi.org/10.33271/mining14.02.085
  20. KD 12.01.201-98 «Tekhnologicheskie skhemy razrabotki pologikh plastov na shakhtakh Ukrainy, Dodatok А(1998).
  21. Shavarskyi, I. (2020). The issue of ensuring the sustainability of preparatory  workings in the development of coal seams by double-unite wallfaces. Journalof Donetsk Mining Institute, (1), 128–139.
    https://doi.org/10.31474/1999-981x-2020-1-128-139

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