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本文论述一种运用数学物理方程推算地下通道中全年自然气温的方法。在推导过程中普遍使用运算微积法。由于以圆柱体作为地下通道的数学模型并且考虑了空气进入地下通道后含湿量变化造成的对于空气干球温度的影响,因此用最终得到的公式进行计算,其结果比较精确。用二个天然岩洞中实测的气温资料和计算结果相比较,二者较好地符合。公式形式虽稍复杂,但具有明显的物理意义,而且以实际数值代入各物理常数后可使公式大为简化。
This paper discusses a method of using mathematical physics equations to calculate the annual natural air temperature in underground passages. The computing micro-product method is commonly used in the derivation process. Since the cylinder is used as the mathematical model of the underground passage and the influence of the change of moisture content after the air enters the underground passage on the air dry-bulb temperature is considered, the final formula is used to calculate and the result is more accurate. The measured temperature data from the two natural caves and the calculated results are in good agreement. Although the form of the formula is slightly complicated, it has obvious physical meanings, and the formula can be greatly simplified by substituting the actual values into the physical constants.