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<p>In deep coal mining conditions, the possibility of coalburst occurring in mining face areas is unknown. To assess its potential risk, this paper establishes a mechanical model to investigate the occurrence mechanism of a coal mining face&#xa0;coalburst. Starting from the critical state of the coal mass deformation system, stress and energy criteria for coalbursts in mining faces are proposed. Two critical indexes are derived by solving these criteria, and their validity is confirmed through a comparison with experimental results. Furthermore, a comparative analysis of the critical stress for coalbursts in mining faces versus roadways is conducted. The findings of this study can provide valuable insights into the quantitative understanding of coalburst mechanisms and offer guidance for the safety design of coal mining operations.</p>

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Analytical Solutions for Energy and Stress Criteria of Coalbursts in Hard-Roof Coal Mining Faces

  • 期刊论文

  • 发表日期：

    2025年7月21日

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  • He Ren,
  • Yishan Pan,
  • Hao Luo,
  • Yimin Song,
  • Yonghui Xiao,
  • Lianpeng Dai

摘要

In deep coal mining conditions, the possibility of coalburst occurring in mining face areas is unknown. To assess its potential risk, this paper establishes a mechanical model to investigate the occurrence mechanism of a coal mining face coalburst. Starting from the critical state of the coal mass deformation system, stress and energy criteria for coalbursts in mining faces are proposed. Two critical indexes are derived by solving these criteria, and their validity is confirmed through a comparison with experimental results. Furthermore, a comparative analysis of the critical stress for coalbursts in mining faces versus roadways is conducted. The findings of this study can provide valuable insights into the quantitative understanding of coalburst mechanisms and offer guidance for the safety design of coal mining operations.