In order to study the problem of high-temperature thermal hazards in deep mining mines, a systematic investigation was conducted at the mine scale using the TF1M3D simulation platform. Combined with on-site measured data, a physical computational simulation model for mine ventilation was established for Hong ya ng No. 3 Mine. By applying theories such as 3D ventilation thermodynamics system simulation, stratum gradient heating theory, and the heat exchange model between ventilation airflow and surrounding rock, the temperature distribution of the mine’s 3D network system was obtained based on the TF1M3D platform. A simulation analysis was performed on the cooling measures of roadway heat insulation combined with mechanical refrigeration. To reduce the temperature of Working Face 706, which is severely affected by thermal hazards, heat insulation layers with a heat insulation rate of 0.2 were installed in the West Wing Belt Inclined Roadway and the Transportation Gateway of Working Face 706, respectively. As a result, the temperature of the working face decreased by 4.17°C, indicating a significant cooling effect. On the basis of installing the heat insulation layers, two sets of refrigerators with a power of 500 kW were selected for deployment. The effective cooling radiation range of these refrigerators is within 600 m from the lower corner of the working face, and the first refrigerator should be installed within 300 m. The results show that this method can accurately predict the temperature of the airflow after cooling and the position of the refrigeration source, and has promising application prospects.
Li et al. (Sun,) studied this question.