Abstract: Engineering,Kunming 650093,China;4.State Administration of Work Satety,Beijing 100713,China Heat-harm treatment in parts of the mine can achieve ideal effect by increasing the air flow and other non-mechanical cooling measures,in which the key is to calculate the air volume.According to the characteristics of underground heat-harm and based on the traditional calculation of mine's demanded air flow,the calculation model of mine cooling air flow is established,which combined of the mine heat exchange principle and the mine heat sources investigation.In this model,the steps to calculate the mine cooling air flow are as following：① calculation of demanded air flow and the distribution of air flow；②selection of the main mine air flow route；③ calculation and analysis of the scattered heat source；④calculation of the dry bulb temperature at working Face;⑤ calculation and analysis of the variation of dry bulb temperature with the amount of the air flow；⑥determination of the mine cooling air flow.Then this calculation model is applied in certain antimony mine in Hunan to calculate the amount of cooling air as 78.88 m3/s.The model has a certain value of popularization,which can be applied in other similar mines.

Key words: Demanded air flow in mine, Cooling air flow, Heat-harm treatment, Heat exchange of shaft and tunnel, Heat source inquiry