Assessment of the state of the rock mass around the crosscuts under additional deformation disturbances
- Details
- Category: Content №2 2024
- Last Updated on 01 May 2024
- Published on 30 November -0001
- Hits: 2168
Authors:
S.M.Hapieiev, orcid.org/0000-0003-0203-7424, Dnipro University of Technology, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
O.V.Skobenko, orcid.org/0000-0003-4606-4889, Dnipro University of Technology, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
N.V.Khoziaikina*, orcid.org/0000-0002-4747-3919, Dnipro University of Technology, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
S.V.Podkopaiev, orcid.org/0000-0002-3258-9601, Donetsk National Technical University, Lutsk, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
D.A.Chepiga, orcid.org/0000-0002-3331-9128, Donetsk National Technical University, Lutsk, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
* Corresponding author e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2024, (2): 032 - 037
https://doi.org/10.33271/nvngu/2024-2/032
Abstract:
Purpose. Assessment of the level of disturbance of the stress state of the rock mass around the crosscut of the depth of 545 m when additional deformations occur during the mining of lower-lying coal pillars by southern longwalls of the k5 layer and assessment of this impact on operational production in the mining-geological and mining-technical conditions of Krasnolymanska mine.
Methodology. Theoretical studies are based on the use of regulatory documents on the design of mining operations in coal mines and geomechanical models developed in accordance with the basic principles of solid mechanics, implemented in proven software products.
Findings. As a result of the research, it has been proven that the mining-geological and mining-technical conditions of the stressed-strained state of the rock mass around capital workings at a depth of 545 are not critical for their stability. The ability to mine coal pillars at lower depths has been substantiated, and a minimum distance limit between research objects has been established, below which the fastening must be strengthened to ensure the stability of the crosscuts.
Originality. For the first time, the stress-strain field in the rock mass around the basis workings has been studied as a result of the imbalance caused by previous mining during the excavation of underlying coal pillars under geological and technical conditions of Krasnolymanska mine based on geomechanical models. The regularity of the equivalent stress growth according to the Mohr-Coulomb criterion with a decrease in the distance between the research objects has been developed. Rational parameters of the technology for working out pillars are substantiated, under which the stress-strain state of the geomechanical system can be safely controlled.
Practical value. The possibility of increasing the productive coal reserves within the field of the mine Krasnolymanska due to the safe mining of pillars around the basis inclines on the underlying levels is justified.
Keywords: capital crosscuts, coal pillars, capital slopes, stress-strain state, regulatory framework, geomechanical models
References.
1. Chepiga, D., Pakhomov, S., Hnatyuk, V., Hryhorets, M., Liashok, Y., & Podkopaiev, S. (2023). Determining the deformation properties of crushed rock under compressive compression conditions. Eastern-European Journal of Enterprise Technologies, 4(1(124)), 85-95. https://doi.org/10.15587/1729-4061.2023.284386.
2. Chepiga, D., Bessarab, I., Hnatiuk, V., Tkachuk, O., Kipko, O., & Podkopaiev, S. (2023). Deformation as a process to transform shape and volume of protective structures of the development mine workings during coal-rock mass off-loading. Mining of Mineral Deposits, 17(4), 1-11. https://doi.org/10.33271/mining17.04.001.
3. Bondarenko, V., Salieiev, I., Kovalevska, I., Chervatiuk, V., Malashkevych, D., Shyshov, M., & Chernyak, V. (2023). A new concept for complex mining of mineral raw material resources from DTEK coal mines based on sustainable development and ESG strategy. Mining of Mineral Deposits, 17(1), 1-16. https://doi.org/10.33271/mining17.01.001.
4. Dorofiienko, V. V., & Pashkevych, M. S. (2012). The concept of “post-mining” as the basis for the development policy of coal mining regions of Ukraine. Economic Herald of Donbass, 27(1), 6-11. Institute of Industrial Economics of the National Academy of Sciences of Ukraine.
5. Pivniak, H. H., Amosha, O. I., Shashenko, O. M., Cherevatskyi, D. Iu., & Borodai, L. V. (2019, 1). Synchro-Mining: case study. Materials of the international conf. “Miners’ Forum – 2019”, (pp. 15-22). Dnipro. Dnipro University of Technology. Retrieved from https://ir.nmu.org.ua/handle/123456789/159642.
6. Popovych, Y. N. (2013, 10). State and prospects for the development of the coal industry in Ukraine. Materials of the international conf. “Miners’ Forum”, 1, (pp. 18-20). Dnipropetrovsk. National Mining University. Retrieved from https://ir.nmu.org.ua/jspui/handle/123456789/149922.
7. Pyvniak, H. H., Shashenko, O. M., & Popovych, Y. N. (2015, 10). Innovation and safety for coal mines of Ukraine. Materials of the international conf. “Miners’ Forum”, (pp. 44-48). Dnipropetrovsk. National Mining University. Retrieved from https://ir.nmu.org.ua/handle/123456789/150457?show=full.
8. Amosha, A. Y., Zaloznova, Yu. S., & Cherevatskyi, D. Iu. (2017). Coal industry and hybrid economy: monograph. Kyiv: NAS of Ukraine, Institute of Industrial Economics. ISBN 978-966-02-8242-1.
9. United Nations Organization (2020). Best practice guidance for efficient methane recovery and utilization from decommissioned coal mines. Series of EEC publications on energy, 64. Geneva. 91. еISBN: 978-92-1-004495-0.
10. Shashenko, O. M., Solodiankin, O. V., & Martovytskyi, A. V. (2012). Stability control of deep coal mine hoods: monograph. Dnipropetrovsk: publishing house “Lizunov-press”. ISBN 978-966-2575-10-1.
11. Shashenko, O. M., Cherednyk, V. A., Khoziaikina, N. V., & Shashenko, D. O. (2021). Physical prerequisites for modeling the gas permeability of waste coal rock mass. News of the Donetsk Mining Institute, 2(49), 78-84. https://doi.org/10.31474/1999-98X-2021-78-84.
12. Bondarenko, V., Cherniak, V., Cawood, F., & Chervatiuk, V. (2017). Technological safety of sustainable development of coal enterprises. Mining of Mineral Deposits, 11(2), 1-11. https://doi.org/10.15407/mining11.02.001.
13. 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.
14. Shashenko, O. M., & Cherednyk, V. A. (2019). Modern ideas about the occurrence of gas deposits in waste coal rock masses. “Mining Bulletin” Krivoy Rog National University, 106, 3-9. https://doi.org/10.31721/2306-5435-2019-1-106.
15. Shashenko, O. M., Khoziaikina, N. V., & Dubovyk, O. I. (2020). Digital modeling of the stability of reused development workings. Scientific journal “Transactions of Kremenchuk Mykhailo Ostrohradskyi National University”, 4(123), 62-70. https://doi.org/10.30929/1995-0519.2020.4.62-70.
16. Chepiga, D., & Tkachuk, O. (2022). Experimental studies of the stability of haulage drifts on pitching seams with different methods of protection. Labour Protection Problems in Ukraine, 38(3-4), 47-53. https://doi.org/10.36804/nndipbop.38-3-4.2022.47-53.
17. Dubovyk, O. I. (2019). Economic feasibility of reusing conveyor drifts in the mining and geological conditions of Krasnolimanskaya mine. Modern resource-energy-saving technologies of mining production, 1(23), 104-111. https://doi.org/10.30929/2074-1537.2019.1.104-111.
18. DSTU 101.00159226.001-2003. Rules for forgery of buildings, structures and natural objects during underground coal mining. National standards of Ukraine. Kyiv: Ministry of Fuel and Energy of Ukraine. [Valid from 2003-11-22]. Retrieved from http://online.budstandart.com/ua/catalog/doc-page.html?id_doc=58232.
19. Construction of protection zones and HRP for conditions of greater depths. Methodology of KD 12.07.301-96 (1997). Ukraine state scientific research and designer Institute of Mining Geology, Geomechanics and surveyor. rights. Retrieved from http://research.nbuv.gov.ua/.
20. SOU 10.1.00185790.011:2007. Preparatory workings on flat layers. Selection of fasteners, methods and means of protection. [Valid from 2008-01-04]. Retrieved from https://budstandart.ua/normativdocument.html?id-_doc=51002&-minregion=843.
21. NPAOP 10.0-1.01-10. Safety rules in coal mines (2010). Kyiv: VVO “Osnova”. 185. [Valid from 2010-03-10]. Retrieved from http://online.budstandart.com/ua/catalog/doc-page?id_doc=26893.
Newer news items:
- Electric vehicle energy consumption taking into account the route topology - 01/05/2024 16:31
- Cable line equivalent circuit parameters determination using the instantaneous power components - 01/05/2024 16:31
- Mathematical modeling of a magnetic gear for an autonomous wind turbine - 01/05/2024 16:31
- Characteristics of elasticity, frequency, and stability of plate connecting assemblies for vibrating machines - 01/05/2024 16:31
- A hybrid ICEEMDAN and OMEDA-based vibrodiagnosis method for the bearing of rolling stock - 01/05/2024 16:31
- Drilling wells taking into account the dynamic properties of rocks - 01/05/2024 16:31
- Gold recovery from waste fine carbon using acetone as solvent (Amesmessa gold mine, Algeria) - 01/05/2024 16:31
- CFD-modeling of critical deviations of combustion processes in pulverized coal boilers. Part 1. Construction of the TPP-210A boiler calculation model - 01/05/2024 16:31
- Influence of hot plastic deformation on properties of the carbon steel - 01/05/2024 16:31
- Container technology for transporting rock masses in quarries - 01/05/2024 16:31
Older news items:
- Influence of relaxation on filtering microflows under harmonic action on the layer - 01/05/2024 16:31
- Formation of prospecting criteria for copper-porphyry deposits based on the construction of reference models - 01/05/2024 16:31
- Three-dimensional density model of the mantle beneath the Ukrainian shield - 01/05/2024 16:31
- Assessment of the influence of the surface layer of coals on gas-dynamic phenomena in the coal seam - 01/05/2024 16:31