【摘要】 地下空间和地热能源的开发和利用已引起了国内外学者的广泛关注,与之有关的岩土体热性质起着至关重要的作用。土的热性质参数包括热导率、热扩散率和比热容。热导率作为热性质最重要的参数之一,它不仅决定着热量在土体中的传递,还影响着土体温度场和湿度场的分布。介绍了研究土体热导率的现实意义,阐述了热量在土中的传递方式,总结了影响土体热导率的主要因素,最后提出了土体热导率的研究方向和展望。更多还原

【Abstract】 In recent years,with the rapid growth of economy and energy consumptions,the development and utilization of underground space and geo-thermal energy have attracted a wide attention of researchers world-wide.The thermal properties of rock and soil play a vital role in these studies.Specifically,the thermal properties of soils include thermal conductivity,thermal diffusivity and specific heat capacity.As one of the most important parameters of thermal properties,the thermal conductivity not only determines the heat transfer in soil,but also affects the distribution of temperature and humidity fields.According to the research status at home and abroad,the practical significance of studying thermal conductivity of soil is introduced,the heat transfer mode in soil is investigated,the main factors affecting thermal conductivity of soil are summarized,and the research direction and development trend of thermal conductivity of soil are put forward.更多还原