Mining of Mineral Deposits

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Study on the influence of the law of mine thermal environment on the temperature variation of airflow

Zhiyuan Shen1, Yimeng Li1, Qizheng Wang1

1School of Civil Engineering, Shenyang Jianzhu University, Liaoning, China


Min. miner. depos. 2026, 20(1):52-58


https://doi.org/10.33271/mining20.01.052

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      ABSTRACT

      Purpose. The purpose of this paper is to explore the influence of factors such as humidity and wind speed on the change in air flow temperature in a mine thermal environment.

      Methods. The mine heat and humidity exchange experiment is combined with numerical simulation. Using ANSYS Fluent, the influence of airflow humidity on the temperature field is simulated and analyzed at different temperatures and wind speeds. A similar experiment was conducted in an experimental mine and measured under different temperature and wind speed conditions. Change in heat exchange between the air inlet and the surrounding rock of the roadway with different humidity.

      Findings. Numerical simulation and experimental results show that as the relative humidity in the airflow increases, the rate of rise in airflow temperature increases gradually. The maximum is 0.038℃/m. Higher wind speed shortens the time for heat exchange, reducing the rate of temperature increase. An empirical model was developed to describe the relationships among wind speed, temperature, humidity, and the rate of temperature rise.

      Originality. This paper incorporates humidity as a key factor and establishes an empirical model for airflow temperature change in humid mine conditions.

      Practical implications. The findings provide a scientific basis for predicting and controlling airflow temperature in high-temperature mines, improving thermal comfort and safety for underground workers and guiding mine ventilation system design and thermal hazard mitigation.

      Keywords: mine; thermal environment; ANASYS Fluent; numerical simulation; temperature change; heat exchange


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