大红山铁矿深地矿井局部制冷降温设备选择

Analysis of Local Refrigeration and Cooling Equipment in Deep Mine of Dahongshan Iron Mine

大红山铁矿属于深井矿山,采用竖井—斜井—斜坡道联合开拓方式,井下回采矿石经溜破系统破碎后由胶带斜井运至地表。其中采6 #驱动站受到电机散热、配电室降温空调外挂机等设备散热、当地气温及原岩温度的影响,局部温度过高。因此,为了局部热源选用合适的局部制冷降温设备,分析矿井制冷降温系统的基本组成构架;结合局部通风方案,计算新风热负荷和设备散热确定系统制冷量,并在此基础上进行了制冷系统主要设备选型。该设备在大红山铁矿井下采6 #胶带驱动站实施后,硐室内干球温度下降6.2 ℃,与硐室串联的5 #胶带干球温度降低5.5 ℃,工人体感温度明显降低,现场作业环境有效改善,该套系统对于深井矿山在开拓期间通风困难,具有一定的推广意义。

Dahongshan Iron Mine belongs to the deep well mine and adopts the method of vertical shaft-inclined well-inclined ramp joint development.After the mine is broken through the sliding system,it is transported from the duct tape to the surface.Among them,the 6 # drive station is affected by the heat dissipation of the motor,the cooling of the air-conditioning outside the distribution room,and the temperature of the local temperature and the temperature of the original rock,and the local temperature is too high.Therefore,in order to select suitable local cooling equipment for local heat source,The basic structure of mine cooling system is analyzed.Combined with the local ventilation scheme,the cooling capacity of the new air heat load and the heat dissipation of the equipment is calculated.After the equipment was implemented under the Dahongshan Iron Mine,the temperature of the dry ball in the chamber dropped by 6.2 ℃,and the temperature of the dry ball of the 5 # duct tape in series with the chamber decreased by 5.5 ℃,and the worker's somatosensory temperature decreased significantly.The working environment has been effectively improved.The system has some generalization significance for the deep well mine during the development period.