近相变区细砂土导热系数试验及预测模型研究

刘志云, 张亚星, 崔福庆, 袁堃, 黄川

Study on thermal conductivity testing and prediction model of fine sandy soil in near phase transition zone

Zhiyun LIU, Yaxing ZHANG, Fuqing CUI, Kun YUAN, Chuan HUANG

表5 负温测试区间导热系数预测模型的预测结果

Table 5 Prediction results of thermal conductivity prediction model in the negative temperature testing range

区间 平均相对误差 最大误差 ±15%误差内占比 ±10%误差内占比 ±5%误差内占比 R2 稳定相变区 3.10% 10.19% 100% 88.9% 45.5% 0.892 近相变区 5.45% 12.39% 100% 99.3% 83.3% 0.883 整个温度区间 4.13% 12.39% 100% 94.7% 66.7% —