【摘要】 多年冻土地区兴建的道路、工业设施以及大型土木工程建筑工程等,都会受到多年冻土稳定性问题的影响。土壤中的热状况、水分状况及其变化是引发冻害及严重程度的主要因素。基于工程稳定性、耐久性及积极性考虑,建立可靠的路基工程冻土热环境评价方法和合理准确的路基温度场计算模型对指导寒区工程建设有重要意义。本文从冻土介质热质耦合输运过程的机理及理论模型、温度场相关问题的计算方法及工程应用等几个方面简要综述了近年来国内外有关多年冻土地区路基工程与冻土间相互作用问题的研究现状和进展。更多还原

【Abstract】 Roads, industrial infrastructures and large-scale construction projects constructed in permafrost regions are affected completely by the stability of frozen ground. Thermal conditions, moisture transference and their transformation are main causes for frost heave. With the view of the stability, endurance and initiative of construction projects, the establishment of a reliable evaluation method of the thermal environment for roadbeds and a reasonable and accurate computational model of the temperature field in that connection are particularly essential for civil engineering in cold regions. In this paper, recent researches on mechanism, modeling and computation of heat and moisture flow in frozen soils are briefly reviewed and directions for further efforts are suggested.更多还原