Numerical simulation study on the thermal environment in heading face

Based on k-ε turbulence model, the distributions of the velocity field, temperaturefield, thermal comfort index, PMV-PPD (Predicted Mean Vote-Predicted PercentageDissatisfied), and air quality index, mean age of air were obtained of Zhouyuanshan CoalMine in-650 m level of a heading face by CFD(Computational Fluid Dynamics)software,Airpak 2.0.Moreover, the human thermal comfort and the air quality of the heading facewere analyzed with PMV-PPD and mean age of air indices, which received an intuitivevisualization and accurate evaluation results.In order to create a safe, comfortable, andeconomical underground operating environment, a scientific, rational, and comprehensiveprediction and evaluation needed to provide a theoretical and technical basis for coal mineventilation, cooling, heat harm treatment, and prevention.Meanwhile, from the humanthermal comfort and air quality to research the underground environment, it embodied theconcept of being human oriented.

Based on κ-ε turbulence model, the distributions of the velocity field, tempera- ture field, thermal comfort index, PMV-PPD （Predicted Mean Vote-Predicted Percentage Dissatisfied）, and air quality index, mean age of air were obtained of Zhouyuanshan Coal Mine in -650 m level of a heading face by CFD（Computational Fluid Dynamics）software, Airpak 2.0. Moreover, the human thermal comfort and the air quality of the heading face were analyzed with PMV-PPD and mean age of air indices, which received an intuitive visualization and accurate evaluation results. In order to create a safe, comfortable, and economical underground operating environment, a scientific, rational, and comprehensive prediction and evaluation needed to provide a theoretical and technical basis for coal mine ventilation, cooling, heat harm treatment, and prevention. Meanwhile, from the human thermal comfort and air quality to research the underground environment, it embodied the concept of being human oriented.