Influence of rock shear processes on the methane content of longwall faces

User Rating:  / 0
PoorBest 

Authors:


A.D.Maussymbaeva, orcid.org/0000-0002-7214-8026, Kazakh Multidisciplinary Reconstruction and Development Institute, Karaganda, Republic of Kazakhstan

V.S.Portnov, orcid.org/0000-0002-4940-3156, Abylkas Saginov Karaganda Technical University, Karaganda, Republic of Kazakhstan

S.B.Imanbayeva, orcid.org/0000-0003-0049-2642, Abylkas Saginov Karaganda Technical University, Karaganda, Republic of Kazakhstan

M.Rabatuly*, orcid.org/0000-0002-7558-128X, Abylkas Saginov Karaganda Technical University, Karaganda, Republic of Kazakhstan, е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

G.M.Rakhimova, orcid.org/0000-0003-0947-0212, Abylkas Saginov Karaganda Technical University, Karaganda, Republic of Kazakhstan

* Corresponding author е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.


повний текст / full article



Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2024, (4): 011 - 017

https://doi.org/10.33271/nvngu/2024-4/011



Abstract:



Purpose.
To establish patterns of change in methane content during formation of zones of unloading of rock mass caused by a longwall face progression.


Methodology.
Determination of gas content (methane content) of coal seams, ash content of Karaganda basin coals, methane content of mine workings was made on the basis of taking and cutting samples from the coal massif in the laboratory of “Management of special maintenance and gasification” of the Coal Department of JSC “Qarmet” according to the DMT methodology (Germany). The chemical structure of gases of k10 seam was determined in the laboratory of Scientific Research Center “Ugol” (Karaganda), as well as by samples of air-gas mixture of degassing wells and in the working area of Saranskaya mine.


Findings.
A model of geomechanical structurization of rock massif was developed, patterns of methane content changes were established, obtained in specific mining-technological conditions of the mine, which were used for productive and safe work on coal excavation.


Originality.
For the first time a model of geomechanical structurization of the coal-rock massif in the conditions of longwall faces was developed; a parametric model determining the intervals of the mining pillar to increased methane flows into the mined-out space was developed; a connection between the dynamics of geomechanical processes in the mined-out coal-rock massif and the methane content of the mine face was established.


Practical value.
The established regularities of change in methane content of mining pillar areas arising at rock shear make it possible to plan degassing of mining area, to provide safe working conditions for miners on gas factor, to forecast the moment of formation of the main roof vaults of different levels and methane emission into the mine face to control mining, which were tested at Saranskaya mine Coal Department of JSC “Qarmet”.



Keywords:
methane, longwall, unloading zone, coal seam, gas content, rock massif, dynamics of methane content

References.


1. Drizhd, N. A., Sharipov, N. H., & Lee, K. D. (2013). Methane content and factors influencing degassing efficiency. Proceedings of the University, KSTU, Karaganda, (2), 74-77.

2. Chen, S., Zhang, C., Li, X., Zhang, Y., & Wang, X. (2021). Simulation of methane adsorption in diverse organic pores in shale reservoirs with multi-period geological evolution. International Journal of Coal Science and Technology, 8(5), 844-855. https://doi.org/10.1007/s40789-021-00431-7.

3. Kamarov, R. K., Akhmatnurov, D. R., Mussin, R. A., & Zamaliyev, N. M. (2018). Setting the volume and location of the gas collectors of abandoned coal mines. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (2) 5-11.

4. Maussymbayeva, A. D., Yurov, V. M., Rabatuly, M., & Rakhimova, G. M. (2024). Assessment of the Influence of the Surface Layer of Coals on Gas-Dynamic Phenomena in the Coal Seam. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (2). https://doi.org/10.33271/nvngu/2024-2/005.

5. Zhang, C., Tu, Sh., Chen, M., & Zhang, L. (2019). Pressure-relief and methane production performance of pressure relief gas extraction technology in the longwall mining. Journal of Geophysics and Engineering, 14(1), 77-89. https://doi.org/10.1088/1742-2140/14/1/77.

6. Ma, Y., Nie, B., He, X., Li, X., Meng, J., & Song, D. (2020). Mechanism investigation on coal and gas outburst: An overview. International Journal of Minerals, Metallurgy and Materials, 27(7), 872-887. https://doi.org/10.1007/s12613-019-1956-9.

7. Clarkson, C. R., & Bustin, R. M. (2010). Coalbed Methane: Current Evaluation Methods, Future Technical Challenges. SPE Unconventional Gas Conference. Pittsburgh, Pennsylvania, USA. https://doi.org/10.2118/131791-MS.

8. Sasmito, A. P., Birgersson, E., Ly, H. C., & Mujumdar, A. S. (2013). Some approaches to improve ventilation system in underground coal mines environment – A computational fluid dynamic study. Tunnelling and Underground Space Technology, 34, 82-95. https://doi.org/10.1016/j.tust.2012.09.006.

9. Sidorenko, S. A., & Ivanov, V. V. (2017). Improving the efficiency underground mining of coal beds in difficult mining and geological conditions. ARPN. Journal of Engineering and Applied Sciences, 3(12), 882-888.

10. Kenetayeva, A. A., Kenetayeva, Zh. K., Tokusheva, Zh. T., & Rabatuly, M. (2019). Methane content of coal seams of Karaganda basin. IOP Conference Series: Materials Science and Engineering, 516(1). https://doi.org/10.1088/1757-899X/516/1/012020.

11. Karacan, C. Ö. (2015). Analysis of gob gas venthole production performances for strata gas control in longwall mining. International Journal of Rock Mechanics and Mining Sciences, 79, 9-18. https://doi.org/10.1016/j.ijrmms.2015.08.001.

12. Buzylo, V., Pavlychenko, A., Borysovska, O., & Saveliev, D. (2019). Investigation of processes of rocks deformation and the earth’s surface subsidence during underground coal mining. E3S Web of Conferences, 123, 01050. https://doi.org/10.1051/e3sconf/201912301050.

13. Gray, I. (2012). Mining gassy coals. Proceedings of the 12th Coal Operators’ Conference. Mining Engineering, University of Wollongong, 249-259. Retrieved from https://ro.uow.edu.au/coal/414.

14. Wang, W., Li, H., Liu, Y., Liu, M., Wang, H., & Li, W. (2020). Addressing the gas emission problem of the world’s largest coal producer and consumer. Lessons from the Sihe Coalfield, China. Energy Reports, 6, 3264-3277. https://doi.org/10.1016/j.egyr.2020.11.199.

15. Xueliang Li, Yu Wang, Shuo Xu, Haonan Yang, & Bo Li (2021). Research on Fracture and Energy Evolution of Rock Containing Natural Fractures under Cyclic Loading Condition. Geofluids, 2, 9980378. https://doi.org/10.1155/2021/9980378.

16. Bodden, W. R., & Ehrlichb, R. (1998). Permeability of coals and characteristics of desorption tests: Implications for coalbed methane production. International Journal of Coal Geology, 333-347. https://doi.org/10.1016/S0166-5162(97)00039-6.

17. Imashev, A., Suimbayeva, A., Zhunusbekova, G., Zeitinova, Sh., Kuttybayev, A., & Mussin, A. (2022). Research into stress-strain state of the mass under open pit with a change in the open-pit bottom width. Mining of Mineral Deposits, 16(3), 61-66. https://doi.org/10.33271/mining16.03.061.

18. Kenetayeva, A. A., Usupayev, S. E., Kryazheva, T. V., & Rabatuly, M. (2021). Demethanization of coal seams in the Karaganda basin. IOP Conference Series: Earth and Environmental Science, 677(4). https://doi.org/0.1088/1755-1315/677/4/042118.

19. Li, B., Li, J., Yang, K., Ren, C., Xu, J., & Zhang, M. (2019). Deformation and permeability model of coal and rock considering moisture content Meitan Xuebao. Journal of the China Coal Society, 44(4), 1076-1083. https://doi.org/10.13225/j.cnki.jccs.2018.0608.

20. Ren, F., Zhang, D., Cao, J., Yu, M., & Li, S. (2018). Study on the Rock Mass Caving and Surface Subsidence Mechanism Based on an In Situ Geological Investigation and Numerical Analysis. Mathematical Problems in Engineering, 1-18. https://doi.org/10.1155/2018/6054145.

21. Karacan, C. Ö. (2011). Probabilistic modeling using bivariate normal distributions for identification of flow and displacement intervals in longwall overburden. Goodman GVR. International Journal of Rock Mechanics and Mining Sciences, 27-41. https://doi.org/10.1016/j.ijrmms.2010.08.006.

22. Makarov, V. V., Guzev, M. A., Odintsev, V. N., & Ksendzenko, L. S. (2016). Periodical zonal character of damage near the openings in highly-stressed rock mass conditions. Journal of Rock Mechanics and Geotechnical Engineering, 8(2), 164-169. https://doi.org/10.1016/j.jrmge.2015.09.010.

23. Demin, V., Khalikova, E., & Rabatuly, M. (2024). Research into mine working fastening technology in the zones of increased rock pressure behind the longwall face to ensure safe mining operations. Mining of Mineral Deposits, 18(1) https://doi.org/10.33271/mining18.01.027.

24. Rabatuly, M., Musin, R. A., Demin, V. F., Usupaev, Sh. Е., & Kenetaeva, A. A. (2023). Improving the efficiency of methane extraction from coal seams. Kompleksnoe Ispolzovanie Mineralnogo Syria, 324(1). https://doi.org/10.31643/2023/6445.01.

25. Schatzel, S. J., Krog, R. B., & Dougherty, H. (2017). Methane emissions and airflow patterns on a longwall face: Potential influences from longwall gob permeability distributions on a bleederless longwall panel. Transactions of Society for Mining, Metallurgy, and Exploration, 342(1), 51-61. https://doi.org/10.19150/trans.8108.

26. Adhikary, D. P., & Guo, H. (2014). Measurement of Longwall Mining Induced Strata Permeability. Geotechnical and Geological Engineering, 32, 617-626. https://doi.org/10.1007/s10706-014-9737-8.

27. Zhang, S., Tang, S., Zhang, D., Fan, G., & Wang, Z. (2017). Determination of the Height of the Water-Conducting Fractured Zone in Difficult Geological Structures: A Case Study in Zhao Gu No. 1 Coal Seam. Sustainability, 9(7), 1077. https://doi.org/10.3390/su9071077.

28. Tutak, M., & Brodny, J. (2019). Predicting Methane Concentration in Longwall Regions Using Artificial Neural Networks. International Journal of Environmental Research and Public Health, 16(8), 1406. https://doi.org/10.3390/ijerph16081406.

29. Pan, Z., Connell, L.D., Camilleri, M., & Connelly, L. (2010). Effects of matrix moisture on gas diffusion and flow in coal. Fuel, 89(11), 3207-3217. https://doi.org/10.1016/j.fuel.2010.05.038.

 

Visitors

7326731
Today
This Month
All days
419
16234
7326731

Guest Book

If you have questions, comments or suggestions, you can write them in our "Guest Book"

Registration data

ISSN (print) 2071-2227,
ISSN (online) 2223-2362.
Journal was registered by Ministry of Justice of Ukraine.
Registration number КВ No.17742-6592PR dated April 27, 2011.

Contacts

D.Yavornytskyi ave.,19, pavilion 3, room 24-а, Dnipro, 49005
Tel.: +38 (056) 746 32 79.
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
You are here: Home Authors and readers terms of subscription EngCat Archive 2024 Content №4 2024 Influence of rock shear processes on the methane content of longwall faces