THERMAL SCIENCE

International Scientific Journal

Peng Gong

,

Ze-Xin He

,

Zhan-Guo Ma

,

Feng-Yu Zhou

,

Yang Li

SIZE OPTIMIZATION AND CO-OPERATIVE SUPPORT MECHANISM OF COAL PILLAR IN RESIDUAL RESOURCES RECOVERY WORKING FACE

ABSTRACT
In this paper, a numerical calculation model of the mining face was established to analyze the rational size of coal pillars in the goaf on both sides by using FLAC3D based on the mining geological conditions in the pilot area. Furthermore, the feasibility of co-ordinated reinforcement with steel pipe column was explored, which can be applied to the recycling of residual coal resources like protecting coal pillars and of great value to increase the recovery rate in gobs as well.
KEYWORDS
rational size of coal pillars, co-ordinated reinforcement, residual resources
PAPER SUBMITTED: 2022-03-15
PAPER REVISED: 2022-11-01
PAPER ACCEPTED: 2022-11-10
PUBLISHED ONLINE: 2023-03-04
DOI REFERENCE: https://doi.org/10.2298/TSCI2301697G
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 1, PAGES [697 - 703]
REFERENCES
  1. Smart, B., et al., Conclusions From Strata Mechanics Investigations Conducted by Cardiff and Strathclyde Universities at Long wall Faces, International Journal of Rock Mechanics and Mining Sciences&Geomechanics Abstracts, 141 (1982), 246, pp. 539-546
  2. Rabcewicz, L., et al., Stability of Tunnels under Rock Load, Soils and Foundations, 21 (1969), 8
  3. Hui, G.-L., et al., Physical Simulation on Deformation Rules of God-Side Roadway Subjected to Dynamic Pressure, Journal of Mining and Safety Engineering, 27 (2002), 1, pp. 77-81
  4. Zhai, W.-L., et al., Application of High Strength and High Pretension Anchor Network Support Technology in Deep Mine Roadway Along Gob, Safety in Coal Mines, 49 (2010), 12, pp. 79-82
  5. Zhang, K.-X., et al., Determining the Reasonable Width of Narrow pillar of Roadway in Gob Entry Driving in the Large Pillar, Journal of Mining & Safety Engineering, 31 (2014), 2, pp. 255-262
  6. Yang, J.-P., et al., Rational Width of Narrow Coal Pillar and Control Technology of Surrounding Strata at Roadway Driven Along Goaf, Journal of Liaoning Technical University, 32 (2013), 1, pp. 39-43
  7. Qi, W.-Y., et al., Design of Coal Pillars of Gob-Side Entry between Mining Faces With Large Differences in Mining Height in Deep Mine, Energy Sources, Part A; Recovery, Utilization, and Environmental Effects, 42 (2020), 21, pp. 2648-2663
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Size optimization and co-operative support mechanism of coal pillar in residual resources recovery working face

© 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