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<p>As mineral resource exploitation progresses deeper, high-temperature thermal hazards present a critical challenge, severely impacting coal mine productivity and worker health. To develop a cost-effective and adaptable integrated control system for thermal hazards in deep mines, this study proposes an innovative strategy based on multi-source field data for precise thermal environment prediction and tiered mitigation. Utilizing extensive on-site temperature measurements and thermophysical properties of rock and coal, a numerical model to predict the deep mine thermal environment was developed. This model facilitated a detailed analysis of heat sources, thermal distribution characteristics, and mitigation technologies within the Shicaocun Coal Mine. It was indicated that heat release from surrounding rock strata and mine water influx are the predominant thermal hazards and heat transfer exhibits preferential pathways along geological faults. Increasing airflow velocity, lowering initial airflow temperature, and reducing heat source power are effective countermeasures, achieving temperature reductions of 38%, 39.2%, and 33.3%, respectively. The thermal impact range at the working face varies seasonally: 118 m (Spring, with inlet air temperature 20°C), 215 m (Summer, with inlet air temperature 32°C), 118 m (Autumn, with inlet air temperature 20°C), and 80 m (Winter, with inlet air temperature 5°C). Consequently, seasonally adaptive mitigation strategies are proposed: localized cooling stations or surface-based refrigeration are recommended for Spring, Summer, and Autumn. Critical mitigation pathways identified include disrupting heat release from coal gangue, minimizing moisture evaporation from walls, dispersing heat from electromechanical equipment, and optimizing ventilation systems to lower air temperature and reduce heat load. This study provides a robust theoretical foundation for thermal environment management at Shicaocun Coal Mine and offers valuable insights for similar deep mining operations globally.</p>

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Precise Prediction and Tiered Mitigation Strategies for Thermal Hazards in Deep Mines: A Data-Driven Approach Applied to Shicaocun Coal Mine

  • 期刊论文

  • 发表日期：

    2025年9月18日

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  • Feng-yuan Lv,
  • Hao-nan Li,
  • Qi-ming Wei,
  • Yan-zi Lei,
  • Long Chen,
  • Yan-bin Yang,
  • Biao Zhao,
  • Yu-liang Sun

摘要

As mineral resource exploitation progresses deeper, high-temperature thermal hazards present a critical challenge, severely impacting coal mine productivity and worker health. To develop a cost-effective and adaptable integrated control system for thermal hazards in deep mines, this study proposes an innovative strategy based on multi-source field data for precise thermal environment prediction and tiered mitigation. Utilizing extensive on-site temperature measurements and thermophysical properties of rock and coal, a numerical model to predict the deep mine thermal environment was developed. This model facilitated a detailed analysis of heat sources, thermal distribution characteristics, and mitigation technologies within the Shicaocun Coal Mine. It was indicated that heat release from surrounding rock strata and mine water influx are the predominant thermal hazards and heat transfer exhibits preferential pathways along geological faults. Increasing airflow velocity, lowering initial airflow temperature, and reducing heat source power are effective countermeasures, achieving temperature reductions of 38%, 39.2%, and 33.3%, respectively. The thermal impact range at the working face varies seasonally: 118 m (Spring, with inlet air temperature 20°C), 215 m (Summer, with inlet air temperature 32°C), 118 m (Autumn, with inlet air temperature 20°C), and 80 m (Winter, with inlet air temperature 5°C). Consequently, seasonally adaptive mitigation strategies are proposed: localized cooling stations or surface-based refrigeration are recommended for Spring, Summer, and Autumn. Critical mitigation pathways identified include disrupting heat release from coal gangue, minimizing moisture evaporation from walls, dispersing heat from electromechanical equipment, and optimizing ventilation systems to lower air temperature and reduce heat load. This study provides a robust theoretical foundation for thermal environment management at Shicaocun Coal Mine and offers valuable insights for similar deep mining operations globally.