International Scientific Journal


Aiming at the problems of easy spalling and roof fall in the soft coal seam under the influence of strong deep mining, the 31020 working face of Pingdingshan No.12 coal mine is used as the engineering background, combined with nuclear magnetic resonance, etc. Various technical methods have carried out research on the water absorption characteristics, composition, micro-structure, and fracture morphology of coal at different immersion time. The experimental results show that the coal sample in this mining area belongs to coking coal under the bituminous coal category. The main inorganic substances are kaolinite and calcite.
PAPER REVISED: 2021-03-18
PAPER ACCEPTED: 2021-04-24
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 6, PAGES [4515 - 4525]
  1. Peng, S. P., Present Study and Development Trend of the Deepen Coal Resource Distribution and Mining Geologic Evaluation (in Chinese), Coal, 17 (2008), 02, pp. 11-27
  2. Xie, H. P., Research Framework and Anticipated Results of Deep Rock Mechanics and Mining Theory, Advanced Engineering Sciences, 49 (2017), 02, pp. 1-16
  3. Xie, H. P., et al., Research and Development of Rock Mechanics in Deep Ground Engineering (in Chinese), Chinese Journal of Rock Mechanics and Engineering, 34 (2015), 11, pp. 2161-2178
  4. Yang, B. G., et al., Analysis of the Thermal Mechanism and Temporal and Spatial Evolution of the Thermal Field of Deep Sandstone under Microwaves, Thermal Science, 24 (2020), 6, pp. 3877-3886
  5. Gao, M. Z., et al., Calculating Changes in Fractal Dimension of Surface Cracks to Quantify How the Dynamic Loading Rate Affects Rock Failure in Deep Mining, Journal of Central South University, 27 (2020), 10, pp. 3013-3024
  6. Gao, M. Z., et al., Principle and Technology of Coring with in-Situ Pressure and Gas Maintaining in Deep coal Mine (in Chinese), Journal of China Coal Society, 46 (2021), 03, pp. 885-897
  7. Shi, D., et al., Preventive Measures of Coal Wall Spalling in a Fully Mechanized Mining Face with Large Mining Height (in Chinese), China Coal, 12 (2008), 02, pp. 32-34
  8. Liu, Q. Y., Water Effects on Meso-Structure and Mechanical Behaviors of Coal (in Chinese), M. Sc. thesis, Sichuan University, Sichuan, China, 2017
  9. Gong, W. L., Multi-Scale and Anisotropic Characterization of Coal Structure Based on Sem Image Analysis (in Chinese), Chinese Journal of Rock Mechanics and Engineering, 29 (2010), S1, pp. S2681-S2689
  10. Xu, J., et al., Experimental Study of Relationships between Metamorphic Grade, Pore Characteristics and Permeability of Coal (in Chinese), Chinese Journal of Rock Mechanics and Engineering, 31 (2012), 04, pp. 681-687
  11. Xia, W. C., et al., Investigation of Changes in Surface Properties of Bituminous Coal during Natural Weathering Processes by XPS and SEM, Applied Surface Science, 293 (2014), Feb., pp. 293-298
  12. Pan, J. N., et al., Micro-Pores and Fractures of Coals Analysed by Field Emission Scanning Electron Microscopy and Fractal Theory, Fuel, 164 (2016), Jan., pp. 277-285
  13. Ramandi, H. L., et al., Micro-CT Image Calibration Improve Fracture Aperture Measurement, Case Studies in Non-destructive Testing and Evaluation, 6 (2016), Part B, pp. 277-285
  14. Gong, W. L., et al., Multiple Scale Characterization of CT Image for Coal Rock Fractures Based on Image Description, Rock and Soil Mechanics, 31 (2010), 02, pp. 371-376 and p. 381
  15. Zhang, R., et al., The 3-D Reconstruction Method and Connectivity Rules of Fracture Networks Generated under Different Mining Lay-outs, International Journal of Mining Science and Technology, 23 (2013), 6, pp. 863-871
  16. Pant, L. M., et al., Multi Scale Characterization of Coal Structure for Mass Transport, Fuel, 159 (2015), Nov., pp. 315-323
  17. Liu, S. Q., et al., The FIB-SEM and X-ray CT Characterization of Interconnected Pores in High-Rank Coal Formed from Regional Metamorphism, Journal of Petroleum Science and Engineering, 148 (2017), Jan., pp. 21-31
  18. Zhao, Y. X., et al., Pore Structure Characterization of Coal by NMR Cryoporometry, Fuel, 190 (2017), Nov., pp. 359-369
  19. Zhang, P. Z., et al., Solid State 13C-NMR Study of Chinese Coals, Journal of Fuel Chemistry and Technology, 13 (1993), 4, pp. 310-316
  20. Yao, Y. B., et al., Advanced Characterization of Pores and Fractures in Coals by Nuclear Magnetic Resonance and X-ray Computed Tomography, Sci. China Earth Sci., 40 (2010), 11, pp. 1598-1607
  21. Cheng, Y. P., Pan, Z. J., Reservoir Properties of Chinese Tectonic Coal: A Review, Fuel, 260 (2020), 37 6, pp.1183-1200
  22. Xu, Y., Experiment Study on Mechanics Properties of Briquette Coal is influenced by Moisture Content (in Chinese), M. Sc. thesis, North China Institute of Science And Technology, Langfang, China, 2016
  23. Huang, B. X., Research on Theory and Application of Hydraulic Fracture Weakening for Coal-Rock Mass (in Chinese), Journal of China Coal Society, 35 (2010), 10, pp. 1765-1766
  24. Yuan, X., Jiang, D. Y., Experimental Study of Gas Permeability of Coal under Different Moisture State, Journal of Mining and Safety Engineering, 35 (2018), 03, pp. 649-656
  25. Wang, Q. X., et al., Proximate Analysis of Coal-Instrumental Method, Proceedings, General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, China National Standardization Administration Committee, Beijing, China, 2014, p. 16.
  26. Gao, M. Z., et al., Mechanical Behavior of Coal under Different Mining Rates: A Case Study from Laboratory Experiments to Field Testing, International Journal of Mining Science and Technology, 31 (2021), 5, pp. 825-841
  27. Zhou, H. W., et al., Evolution Characteristics of Seepage Channel during Water Infusion in Deep Coal Samples (in Chinese), Journal of China Coal Society, 46 (2021), 03, pp. 867-875
  28. Xu, H., et al., Effective Porosity in Lignite Using Kerosene with Low-Field Nuclear Magnetic Resonance, Fuel, 213 (2018), Feb., pp. 158-163
  29. Zheng, G. Q., et al., The Application of Nuclear Magnetic Resonance on Analyzing Aperture in Coal (in Chinese), North China Institute of Science and Technology, 11 (2014), 04, pp. 1-7
  30. Gao, M. Z., et al., The Location Optimum and Permeability-Enhancing Effect of a Low-Level Shield Rock Roadway, Rock Mechanics and Rock Engineering, 51 (2018), 9, pp. 2935-2948
  31. Yang, M. Q., et al., On Distribution Characteristics of the Temperature Field and Gas Seepage Law of Coal in Deep Mining, Thermal Science, 24 (2020), 6, pp. 3923-3931

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence