矿井高温掘进巷道降温技术研究及应用

矿井高温影响作业人员健康、降低劳动效率、损坏作业器械。该文分析了矿井掘进时的热源及热害，并对现有的掘进面降温技术原理、适用环境、需解决的关键问题进行分析。非机械降温技术适用于浅层矿井降温; 隔热、个体防护等降温技术在深部高温矿井有较好的应用前景; 在矿井空调降温技术中，水制冷、制冰制冷等降温技术在未来会有更广泛的应用，以地热、热涌水、电站余热等为制冷动力的节能减排制冷空调技术是矿井降温技术研究主要的趋势。针对某硫铁矿的高温掘进问题，采用矿井空压式制冷空调系统和双层隔热风筒，及时排除掘进面的地热水，使得掘进作业区风流最高温度（干球）由34.7 ℃降至26 ℃。 

Research and application of cooling technology in roadway driving in the mine at high temperature

The high temperature in the mine affects the health of workers, reduces the labor efficiency and damages the working equipment. In this paper, we analyze the heat source and heat damage in the process of roadway driving, the principle and applicability of the existing cooling technology in driving surface and some key hitches to be solved. Such conclusions have been reached: high temperature mainly has a greater impact on workers, equipment, blasting and cement support; non-mechanical cooling technology is more suitable for shallow mine cooling but heat insulation and personal protection will have a better future in deep high-temperature mine; in terms of air conditioning cooling technology, water refrigeration and ice-making refrigeration technology will have greater application prospects in the future; refrigeration air conditioning technology that promotes energy-saving emission reduction, with geotherm, heat gushing water, power station waste heat as refrigeration power, is an important trend of mine cooling technology research. In the process of driving at high temperature in a pyrite mine, a mine air pressure refrigeration air conditioning system and a double-layer heat insulation air duct were adopted to remove geothermal water in the driving surface in time so that the maximum air temperature (dry ball) in the driving operation area was reduced from 34.7 ℃ to 26 ℃.