土体热传导系数测量与模型研究进展

Advances in measurement and model research of soil thermal conductivity

土壤流热耦合理论对于保障土石坝的长期稳定和安全运行等方面有着重要的意义。流热参数的确定是土壤流热耦合模型的关键,在一定程度上决定着模型模拟的结果。为优化流热耦合模型,提高渗流热监测技术理论的实用性与精度,建立完善可靠的土石坝渗流热监测体系,本文介绍了土壤热传导系数测量的稳态法和瞬态法,总结了目前应用较为广泛的经验模型与理论模型,并对模型进行了总结评价。在未来的研究中,应该进一步完善测量方法及预测模型的适用性和可靠性。

The theory of soil hydro-thermal coupling is of great significance to the long-term stability and safe operation of earth-rock dams. The determination of hydro-thermal parameters is the key process of studying the soil hydro-thermal coupling model, which determines the results of model simulation to a certain extent. In order to optimize the hydro-thermal coupling model, improve the practicability and accuracy of seepage monitoring with temperature technology theory and establish a sound and reliable seepage monitoring with temperature system for earth-rock dams, this paper introduces the steady-state method and transient method for measuring soil thermal conductivity, and summarizes the current applications. Moreover, a wide range of empirical models and theoretical models are summarized and evaluated. In the future research, the applicability and reliability of measurement methods and prediction models should be further improved.