大红山铜矿西矿段巷道喷涂隔热材料降温效果的数值模拟分析

Numerical simulation Analysis on the Cooling Effect of Spraying Thermal Insulation Material to Roadway in the West of Dahongshan Copper Mine

随着深部开采活动的增多,越来越多的矿山面临着因地热导致的矿井热害难题。为探讨高温巷道围岩喷涂隔热材料后的降温效果,以大红山铜矿西矿段-20m中段为研究对象,进行围岩热力学参数测试,并利用Ventsim软件开展-20m中段全区域巷道喷涂隔热材料的降温效果仿真分析,进一步分析了不同进风条件下局部巷道区域喷涂隔热材料的降温效果。结果表明:在-20m中段全区域喷涂隔热材料后,平均降温仅1.12℃,整体降温效果不佳;当局部巷道喷涂隔热材料且入口风流温度小于28℃时,喷涂隔热材料的降温效果能满足要求,喷涂隔热材料可作为一种辅助降温措施应用于局部区域的热害防治。

With the increase of deep mining activities,more and more mines are facing the problem of mine heat damage caused by geothermal heat.In order to discuss the cooling effect of spraying thermal insulation material to high-temperature roadway surrounding rock,taking the-20mlevel in the west of Dahongshan Copper Mine as the research object,the thermodynamic parameters of surrounding rock were tested.And the Ventsim software was used to carry out the simulation analysis on the cooling effect of spraying thermal insulation material to the whole areas of the-20mlevel,and to further analyze the cooling effect of spraying thermal insulation material to the local roadway areas under different air inlet conditions.The results show that the average cooling effect is only 1.12℃after spraying the thermal insulation material to the whole areas of the-20m level,and the overall cooling effect is not good.When the local roadway is sprayed with thermal insulation material and the inlet air flow temperature is less than 28℃,the cooling effect of spraying thermal insulation material could meet the requirements.Spraying thermal insulation material can be used as an auxiliary cooling measure to prevent heat damage in local areas.