A review of the research progress of cooling technology in deep mining

Abstract

High-temperature heat damage is a common phenomenon in the field of mine mining, and as the mining depth increases, the degree of underground heat damage is also increasing, which seriously restricts the productivity of the mine and affects the physical and mental health of workers. Based on the mining situation of mineral resources, this paper summarized the formation mechanism and heat dissipation characteristics of different heat sources of mine high-temperature heat damage and analyzed the influence of heat damage on the mine production process and human physiological and biochemical indicators. Then, we summarized the existing cooling technologies, mainly divided into non-artificial and artificial cooling technology. The cooling mechanism and application status of cooling technology were introduced and analyzed and compared the characteristics and application scope of each cooling technology, which have specific guiding and reference significance for the selection of cooling technology for different degrees of heat damage mines. Finally, building upon the low-temperature rock formation pre-cooling technology, a novel concept for quantifying the mine inlet airflow volume was advanced, along with the formulation of a relationship model that correlates the geometry of the roadway with the temperature alteration of the airflow. This development laid a theoretical foundation for harnessing the ground temperature effect in shallow roadways to regulate the temperature of the mine’s inlet airflow, thereby enhancing the working environment at the mine’s working face.