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  11. Dynamic Assessment Of Occupational Heat Stress In Deep Mine Roadways: A Coupled Heat-moisture Model For Predictive Microenvironmental Analysis

Dynamic assessment of occupational heat stress in deep mine roadways: A coupled heat-moisture model for predictive microenvironmental analysis

Peng Shi1, Zhijun Wan2, Yuan Zhang2

  • 1School of Mines, China University of Mining and Technology, Xuzhou 221116, China.

Environmental Research
|January 25, 2026

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View abstract on PubMed

Summary
This summary is machine-generated.

Deep mining creates dangerous heat and humidity. A new model shows how excavation airflow causes hotspots, highlighting the need for latent heat control and targeted cooling to protect miners.

Area of Science:

  • Occupational Health and Safety
  • Mining Engineering
  • Environmental Science

Background:

  • Deep mining operations face extreme thermal challenges, posing significant occupational health risks to miners.
  • Understanding the dynamic evolution of heat-moisture exposure is crucial for miner safety.

Purpose of the Study:

  • To develop and validate a 3D transient model for simulating heat-moisture dynamics during progressive excavation in deep mines.
  • To identify critical hotspots and understand the factors contributing to heat stress in mining environments.

Main Methods:

  • A three-dimensional transient model incorporating a moving-mesh technique was developed to simulate excavation.
  • The model was rigorously validated against field measurements, achieving relative errors below 2.0%.
Keywords:
Deep miningDynamic assessmentHeat-moisture exposureOccupational heat stress

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Main Results:

  • Excavation creates distinct airflow zones, with vortices near the working face identified as critical health risk hotspots.
  • Recirculation within these zones causes localized increases in temperature and absolute humidity, intensifying heat stress.
  • Moisture phase change was the primary heat load contributor, accounting for approximately 80% of the total.

Conclusions:

  • The study provides a robust predictive framework for assessing occupational heat exposure in deep mines.
  • Effective risk mitigation requires prioritizing latent heat control and implementing targeted cooling in identified high-risk zones.
Underground thermal environment