矿产资源的开采深度日趋增大，温度高达40-50℃的围岩导致了高温高湿地下空间环境，严重危及地下设备运行安全及作业人员的身体健康和工作效率。当前矿井制冷降温能耗巨大、降温效果评价指标单一，不能满足深部开采必须的环境要求。本项目拟采用理论分析、数值计算与实验研究相结合的方法，进行主被动技术改善深部地下空间热环境及热舒适评价的基础研究。具体内容包括：建立传热强化的矿用空冷器数值模型并进行传热-流动优化计算，在此基础上研究模块化空冷器除尘效率、流动阻力和换热量的变化规律；研究复合相变材料热物性参数变化及相变装置传热强化方法，分析复杂条件下相变装置-隔热层-围岩非稳态传热特性；研究围岩温度、空气干球温度、相对湿度和风速等对地下空间环境热舒适度影响规律并建立评价模型。本项目研究成果有助于解决当前深部热环境控制技术难题，为低能耗的矿井降温提供理论基础和技术支撑。

The exploiting depths of mineral resources is increasing rapidly. The surrounding rock with temperature of 40-50 °C results in hot and humid environment in the deep underground space. Both the operation of equipment and the health and work efficiency of workers are seriously affected. At present, the energy consumption of mine cooling system is huge and the evaluation index for the underground environment is scarce. The conventional measures cannot meet the thermal environment requirements of the deep underground space. In this work, the basic research of the improvement of thermal environment by active and passive technologies and model for the thermal comfort will be conducted through using the comprehensive method of theoretical analysis, numerical calculation and experimental research. The main works are divided into the following parts: numerical simulation and experimental validation of the optimization model coupled with heat transfer and fluid flow for mining air cooler. The efficiency of dust collection, flow resistance and heat transfer rate of the new module-designed air cooler will therefore be studied; Experimental research on the thermal properties of composite phase change materials and numerical calculation of heat transfer enhancement of the phase change unit. Theorical study of the unsteady heat transfer characteristic of composite layers composed of phase change device-thermal insulation layer-surrounding rock; Experimental study of the effects of rock temperature, dry bulb temperature of air, relative humidity and wind speed on thermal comfort and the evaluating model for the thermal environment in deep underground space. The research results will solve the thermal environment controlling problems of underground space and provide theoretical basis and technical support for low energy consumption cooling in deep mine.