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本文详尽地分析了在现场用热探针法测量土壤导热系数和导温系数时,由于热探针有限长、被测热物性不均匀、土壤内温度分布不均匀,以及探针内部加热器与保护套管之间和保护管套与被测土壤之间存在着接触热阻等原因,探针的实际升温过程与理想条件下升温过程的差别和由此引起的所求取热物性的误差。本文同时给出防止和修正这些误差的一些具体方法。
In this paper, a detailed analysis of the thermal probe method used in the field of soil thermal conductivity and thermal conductivity coefficient, due to the finite length of the thermal probe, the measured thermal properties of non-uniform soil temperature distribution is uneven, and the probe internal heater and The thermal resistance between the protective sleeve and the protective sleeve and the soil under test, the difference between the actual heating process of the probe and the heating process under ideal conditions and the error of the thermal physical property obtained therefrom. This article also gives some specific ways to prevent and correct these errors.