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岩石热传导系数λ是指岩石每小瞄每 m~2面积上,岩石内温度降度为1℃每米时的导热量[Kcal/(m·h·℃))。λ值大的岩石属良导热性岩石。矿井通风温度的上升,约有40～50%是由围岩向风流散热而引起的。根据富里哀热传导方程,巷道岩壁传出来的岩热等于风流温升获得的热量,可见正确掌握λ这个岩石热物理参数,对通风温度预测计算是十分重要的。
The thermal conductivity λ of the rock refers to the thermal conductivity [Kcal / (m · h · ° C)] per m ~ 2 area of the rock per micrometer, and the temperature drop in the rock is 1 ° C per meter. A rock with a large λ value is a thermally conductive rock. Mine ventilation temperature rise, about 40 ~ 50% is caused by the surrounding rock cooling to the wind. According to the Fuli heat conduction equation, the rock heat coming out from the rock wall of the roadway is equal to the heat quantity obtained from the temperature rise of the wind flow. Therefore, it is very important for the prediction of the ventilation temperature to correctly understand the thermal physical parameter λ.