THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

Heping Yan

,

Guangyu Mu

,

Yugui Yang

,

Chao Qiu

STUDY ON THE DAMAGE EVOLUTION AND WATER LOSS OF AQUIFER UNDER COAL MINING

ABSTRACT
In this study, a stress-damage-seepage coupling model is established to explore the water inrush mechanism of mining workface. The laws of water loss in aquifers, damage evolution and seepage distributions of overlying strata are analyzed in the process of mining. The stress concentration phenomenon is obvious at both ends of goaf. The damage zone presents the characteristics of 'saddle shape' with higher at two ends and lower at the middle of goaf. The permeability decreases in the compressive stress zone around the goaf, and increases in the tensile stress zone. The increase of leakage affects the water resource conservation and mining safety.
KEYWORDS
water inrush, damage evolution, overlying strata, seepage law
PAPER SUBMITTED: 2023-07-22
PAPER REVISED: 2023-08-24
PAPER ACCEPTED: 2023-12-11
PUBLISHED ONLINE: 2024-02-18
DOI REFERENCE: https://doi.org/10.2298/TSCI230722025Y
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2024, VOLUME 28, ISSUE Issue 2, PAGES [1061 - 1066]
REFERENCES
  1. Zhao, Y., et al., Mechanism of Multifield Coupling-induced Outburst in Mining-disturbed Coal Seam, Fuel, 272 (2020), 2, ID117716
  2. Wang, J. S., et al., Study on Evolution Law of Water Inrush Co-ordinated by Seepage Stress Coupled Failure and Progressive Guiding in Floor, China Energy and Environmental Protection, 44 (2022), 1, pp. 16-20
  3. Cui, G. Z., et al., Simulation of Coal Mine Water Inrush Based on StressSeepage Damage Coupling, Chi­na Mining Magazine, 30 (2021), 5, pp. 136-142
  4. Guo, X. M., et al., Numerical Analysis on Seepage Evolution Law of Floor Cracks in Coal Mining Face, Coal Engineering, 45 (2013), 4, pp. 90-93
  5. Yang, B., et al., Numerical Simulation of Flow Mechanism of Water-inrush in Coal Mine Based on Non-linear Flow Model, Metal Mine, (2017), 6, pp. 180-185
  6. Zhao, C. H., et al., Analysis of Overlying Aquifer Water Inrush above Mining Seam in Yushen Mining Area, Journal of China Coal Society, 46 (2021), 2, pp. 523-533
  7. Zhao, C. H., et al., Construction and Application of Overburden Damage and Aquifer Water Loss Model in Medium-deep Buried Coal Seam Mining in Yushen Mining Area, Journal of China Coal Society, 44 (2019), 7, pp. 2227-2235
  8. Wang, J. G., et al., Multi-Physical Coupling Theory And Numerical Simulation of Coalbed Methane Thermal cracking Mining, China University of Mining and Technology Press, Xuzhou, China, 2019, pp. 142-143
  9. Gao, F., et al., Research on the Coal and Rock Damage and Gas Permeability in the Protective Seams Mining, Journal of China Coal Society, 36 (2011), 12, pp. 1979-1984
  10. Zhu, W. C., et al., Investigation of Water Inrush from Karst Subsidence Column by Using a Coupled Hy­dromechanical Model, Chinese Journal of Underground Space and Engineering, 5 (2009), 5, pp. 928-933
  11. Zhu, W. C., et al., Coupled Thermal-hydraulic-mechanical Model During Rock Damage and Its Prelimi­nary Application, Rock and Soil Mechanics, 30 (2009), 12, pp. 3851-3857
PDF VERSION [DOWNLOAD]
Study on the damage evolution and water loss of aquifer under coal mining

© 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