Study Of Mine Thermal Environment And Human Thermal Comfort

High temperature is the main problem which can not be ignored in heat harm mine. The air flow temperature is also the important factor influencing the thermal comfort of underground workers. In order to meet the workers' requirement to working environment, the thesis analyses worker thermal comfort in the extreme working condition.To study the thermal comfort of workers in heat harm mine, the thesis analyses human body heat balance based on the mechanism of human body thermal comfort. Then the thesis analyses the heat exchanging process of surrounding rock and the air flow from the angle of heat transfer analysis. The thermal conductivity of the roadway rock is measured by laser flash thermal conductivity instrument. Then the air flow temperature simulation during the heat transformation is made by CFD software. According to the simulation of air flow temperature, PMV-PPD index are measured. The thermal comfort of mine thermal environment is concluded by analyzing the index of PMV-PPD.The thesis concludes the rule of air flow changing temperature in roadway and also judges human body thermal comfort under different air flow speed in heat harm mine.