关键词: 风流温度, 导热系数, 不稳定传热系数, 围岩传热

Abstract: Airflow temperature in underground roadways is affected by various factors, such as the original rock temperature, the heat transfer performance of wall rock, the time of heat exchange between rock and airflow, and other heat sources, in which heat transfer of wall rock plays a key role. In order to analyze the influence of heat transfer of surrounding rock on airflow temperature, this paper analyzes basic impact rules of heat exchange between walk rock and airflow in dry horizontal roadways on airflow temperature through the theoretical calculation, according to the heat transfer rule of wall rocks and air flow. This provides a more accurate forecast value for the mine ventilation design, which makes the design more precision.

Key words: Airflow temperature, Thermal conductivity, Unsteady heat transfer coefficient, Wall rock heat transfer