Abstract: Mine geothermal hazard is one of the important factors for deep safety mining. Effective and economical mine cooling techniques are particularly important for the safe and efficient mining of deep,high-temperature mines. The types of mine heat sources and the impact of thermal hazard on people are analyzed,and the current state of research on the principles and applications of mine cooling technologies is reviewed. The non-artificial refrigeration technology for the mine with light or shallow thermal hazard is studied,and the various artificial cooling and refrigeration technology for the mine with heavy thermal hazard and deep mine are expounded emphatically. The advantages and disadvantages of cooling technology,individual protective clothing and vortex tube combined with mine microclimate control technology and the progress of application research in the mine site are compared and analyzed. The common problems of the current cooling technologies are pointed out,and the future technical development trend of geothermal control and waste heat recovery and utilization are discussed,so as to provide certain reference for the selection of suitable deep shaft cooling technology. The results show that although the current mine cooling technology is developing rapidly,there are problems such as large energy consumption,complex refrigeration equipment systems and difficulty in maintenance,high humidity in mines that only focus on cooling,failure to fully utilize the geothermal energy value of mines,and less research on special cooling systems for non-coal mines. In view of the common problems of mine cooling systems,it is proposed to develop new energy-saving and efficient cooling technologies,focus on the development of refrigeration equipment,adhere to the principle of both cooling and dehumidification,make full use of mine geothermal energy and design mine cooling technologies for non-coal mines.

Key words: deep mining,mine geothermal hazard,heat sources,cooling technology,geothermal control,waste heat recovery