岩土工程学报2013，Vol.35Issue(z1)：129-133,5.
非饱和土热导率预估模型研究
Prediction model for thermal conductivity of unsaturated soil
摘要
Abstract
The thermal conductivity of unsaturated soil,one of the key parameters,is very important for analyzing the thermal phenomenon in geotechnical engineering.Based on the distribution features of three-phase system in soil,through analogy the heat propagation in the earth is regarded as the seepage in soil.A parallel combination model for heat conduction in the soil is generalized.A mathematical model for thermal conductivity of the unsaturated soil is derived,and the model parameters are analyzed.To some specific soil,the porosity has dramatical influence on the thermal conductivity,but the influence of saturation is not significant.Finally,by comparing the predicted value of thermal conductivity to the data measured by KD2 instrument,the maximum error range is less than 10％.The results show that the proposed model can be employed to predict the thermal conductivity of the soil.关键词
导热系数/预估模型/非饱和土Key words
thermal conductivity/ prediction model/ unsaturated soil分类
建筑与水利引用本文复制引用
谈云志,喻波,胡新江,刘晓玲..非饱和土热导率预估模型研究[J].岩土工程学报,2013,35(z1):129-133,5.基金项目
国家自然科学基金项目(51009084) （51009084）
湖南省交通科技进步与创新计划项目(201045,200910) （201045,200910）
