近年来,随着露天开采深度增加,开采过程中产生的有害气体和粉尘的污染程度呈递增趋势.为了加速采场内污染物扩散,研究自然环境下某深凹露天矿岩壁温度场分布规律是十分必要的.首先,基于传热学原理确立了其主要影响因素.然后,根据岩壁阴坡面和阳坡面受太阳辐射影响不同,选取某深凹露天矿四个典型位置来设计现场试验,并采用量纲分析法和多元非线性回归分析法建立了某深凹露天矿岩壁温度变化的经验模型,该经验模型能较好地拟合现场试验结果.研究深凹露天矿岩壁温度的分布规律,能够进一步揭示露天矿内部的温度场分布及逆温层的演变规律,为深凹露天矿通风热动力理论研究奠定坚实基础,对解决深凹露天矿大气污染难题具有重要的理论和实际意义.%In recent years, with the increase of the depth of open-pit mining, the pollution level has been on the rise due to harmful gases and dust occurring in the process of mining. In order to accelerate the diffusion of these air pollutants, the distributed regularity of the rock face temperature which is directly related to the air ventilation in deep open-pit mines should be studied. Here, we establish the key factors influencing the rock face temperature in a deep open-pit mine. We also present an empirical model of the rock face temperature variation in the deep open-pit mine, of which the performance is interestingly high compared with that of the field test. This study lays a foundation to study the ventilation thermodynamic theory in the deep open-pit mine, which is of great importance for theoretical studies and engineering applications of solving air pollution problem in deep open-pit mines.
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