直埋电缆回填土导热系数测试

吕洪坤,吴宇豪,冯彦皓,汪明军,俞自涛

Measurement of thermal conductivity of backfill soil for buried power cable

Hong-kun LV,Yu-hao WU,Yan-hao FENG,Ming-jun WANG,Zi-tao YU

表 2 各土壤试样导热系数样本标准差

Tab.2 Sample standard deviation of thermal conductivity of soil samples

ww/% $\lambda_{\rm{sd}} $ / (W·m−1·K−1) 粗骨土 水稻土 红壤 潮土 黄壤 0 0.004 0.003 0.004 0.004 0.003 5 0.031 0.014 0.014 0.029 0.008 10 0.074 0.044 0.046 0.051 0.017 15 0.099 0.072 0.047 0.060 0.067 20 0.113 0.099 0.074 0.094 0.053 25 0.090 0.112 0.066 0.090 0.057