超深井矿山井下降温技术研究

Research on cooling technology for ultra-deep mine shafts

针对某超深井矿山井下热害问题,利用Ventsim^(TM) DESIGN 5.4三维通风软件对矿山井下通风系统进行通风和热模拟计算,并通过热负荷计算对比需风量焓差,分析得到:矿山一期工程通过加大风量可以降低井下工作面气象环境至国家相关安全规程允许范围内(湿球温度不高于27℃)。二期工程通过加大风量不能解决井下高温问题,通过热模拟计算和分析后,根据矿山现状,在3个位置设置制冷站并进行核算,得到了每个制冷站所需负荷,最终对各个制冷机组进行了选型。

Addressing the issue of heat hazards in an ultra-deep mine,the Ventsim^(TM) DESIGN 5.43D ventilation software was utilized to simulate and calculate the mine's underground ventilation system.By comparing the required airflow enthalpy difference through thermal load calculations,it was determined that in the first phase of the mine project,increasing the airflow could reduce the working face's meteorological environment to within the limits allowed by national safety regulations(wet-bulb temperature not exceeding 27℃).However,in the second phase,increasing the airflow alone could not resolve the high-temperature issue underground.Based on thermal simulation calculations and analysis,3 refrigeration stations were placed in specific locations according to the current conditions of the mine.The required load for each refrigeration station was calculated,and suitable refrigeration units were selected accordingly.