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Stability analysis of residual pillar in the adjustment of mine pressure in the final mining stage of fully mechanized face

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Abstract

Mine pressure adjustment before fully mechanized mining face penetration ensures a smooth transfixion of the working face and safe equipment withdrawal. On the basis of an analysis of the applicable conditions of different strata pressure adjustment measures before penetration, the mechanical analysis model of the remaining coal pillar in final mining was established, and the functional relationship between the critical width of the coal pillar and the occurrence conditions of the surrounding rock, the physical and mechanical parameters, the engineering-related parameters, and the failure form of the main roof in final mining were obtained. The location of the main roof fracture, the depth of the working face, the nature of the strata, and the mining height are important in controlling the surrounding rock stability in the final mining stage. To ensure the coal pillar stability, the main factors mentioned above should be considered, especially when stopping mining is needed to adjust the mine pressure.

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Acknowledgements

The authors would like to extend their sincere appreciation to the Ningtiaota Mining Co., Ltd. for the field test and data collection.

Funding

This study was financially supported by the China Postdoctoral Science Foundation (No. 2019M663936XB), the National Natural Science Foundation of China (No. 51979218), the Joint Funds of the National Natural Science Foundation of China (No. U1965107), the Natural Science Foundation of Shaanxi Province (No. 2018JM5118), and the Open fund of Key Laboratory of Ministry of Education (No. 2017KDZ01).

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Authors and Affiliations

  1. Post-Doctoral Mobile Station of Geological Resources and Geological Engineering, Xi’an University of Science and Technology, Xi’an, 710054, Shaanxi, China

    Rongbin Huang & Shuangming Wang

  2. School of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an, 710054, Shaanxi, China

    Rongbin Huang, Xingzhou Chen & Shuancheng Gu

  3. Research Institute of Green Geology for Green Coal Mining, Xi’an, 710054, Shaanxi, China

    Rongbin Huang & Shuangming Wang

Authors
  1. Rongbin Huang
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  2. Xingzhou Chen
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  3. Shuangming Wang
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  4. Shuancheng Gu
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Contributions

R.B. developed the idea and edited the paper; X.Z. and S.M. provided theoretical direction; S.C. guided the establishment of mechanical models.

Corresponding author

Correspondence to Xingzhou Chen.

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The authors declare that they have no competing interests.

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Responsible Editor: Murat Karakus.

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Huang, R., Chen, X., Wang, S. et al. Stability analysis of residual pillar in the adjustment of mine pressure in the final mining stage of fully mechanized face. Arab J Geosci 15, 439 (2022). https://doi.org/10.1007/s12517-022-09498-1

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  • DOI: https://doi.org/10.1007/s12517-022-09498-1

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