前言在煤矿中,随着采场向深部发展而地热升高,加上大量电气设备散热等原因,致使井下有很多地点温度达30℃,湿度达98%以上,致使作业环境极为恶化。作为对策,是建立井下冷房。但只靠通风很难降低井下温度,也就是说用通风法降温,对全矿井来说,需要采用大型冷房,但其效果仍是有限的。因此,采用了局部冷房或冷水井下冷 Foreword In coal mines, as geothermal heats up in deep stopes and a large number of electrical equipment are dissipated, temperatures in well lots reach up to 30 ° C and humidity reaches over 98%, causing the working environment to deteriorate extremely. As a countermeasure, is to establish underground cold room. However, it is difficult to reduce the downhole temperature only by ventilation, that is to say, ventilation cooling is adopted. For the whole mine, large cold rooms are needed, but the effect is still limited. Therefore, the use of local cold or cold underground cooling