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天然岩土导热系数的测定目前还没有统一的国家和行业标准。为更准确地获得天然岩土导热系数,采用GB/T50123-1999国家土工试验方法,在驻马店市城区某钻孔采集土样进行实验,分析含水率、直径和厚度对其导热系数的影响。结果表明,直径小于一百毫米时,导热系数增长较快,直径大于一百毫米时,导热系数增长缓慢,同时,导热系数随厚度和含水率的增大而增大。
The determination of natural rock and soil thermal conductivity at present there is no uniform national and industry standards. In order to obtain the thermal conductivity of natural rock more accurately, the GB / T50123-1999 national geotechnical test method was used to collect soil samples from a borehole in the urban area of Zhumadian City. The influence of moisture content, diameter and thickness on the thermal conductivity was analyzed. The results show that when the diameter is less than one hundred millimeters, the thermal conductivity increases rapidly. When the diameter is more than one hundred millimeters, the thermal conductivity increases slowly. Meanwhile, the thermal conductivity increases with the increase of thickness and moisture content.