综合考虑空气温度、湿度与焓等参数,提出以矿井空气吸热能力来衡量矿井工作热环境,当矿井空气绝对吸热能力为负值或相对吸热能力超过100%时,可认定此时的工作热环境超出了有关规定,有必要采取降温措施。以山东省济宁二号煤矿为例,对其井下冬夏两季空气吸热能力进行了测定与分析,结果表明:矿井空气吸热能力与一般空气热力参数如温度、湿度等变化趋势相反。在进风及用风区段,吸热能力逐渐下降,至回采工作面出口处最低,甚至出现负值。

In consideration of the air temperature, moisture, enthalpy and other parameters, the mine air absorption capacity was provided to judge the mine workin g thermal environment.When the mine air absolute thermal absorption capacity was negative value or the relative thermal absorption capacity was over 100%, the pape r held that the mine working thermal environment was over the related regulations and the cooling measures should be taken necessarily. Taking Jining No.2 Mine of Sh andong as an example, a measurement and analysis was conducted on the air thermal absorption capacity both at winter and summer in the underground mine.The res ults showed that the air thermal absorption capacity in the underground mine and the general air thermal parameters including the temperature, moisture and other vari ation tendency would be by contraries .At the air incoming and the ventilation sections, the thermal absorption capacity would be steadily reduced until the lowest capaci ty at the exit of the coal mining face and would be a minus value.