摘要
为加深对冻胀机理的了解，首先研究与未冻水迁移密切相关的冻结缘是十分必要的，文章综述了冻结缘的微结构特征和冻结缘的特征参数（包括未冻水含量、导湿系数和冰、水相压力），然后概述了各类冻胀预报模型的发展方向，并提出冻结缘和冻胀模型研究领域的工作重点是：继续加强冻胀机理的研究、深入测定冻结缘的特征参数和建立健全冻胀预报模型的综合评价．
In large permafrost and seasonally frozen ground regions, many damages to various constructions are the result of freeze-thaw action caused by water migration. In order to deepen the understanding of frost-heaving mechanism, it is necessary to research the frozen fringe closely related to unfrozen water migration. In this paper a general overview about microscopic structure characteristics of the frozen fringe and characteristic parameters of the frozen fringe including unfrozen water content, hydraulic conductivity and pressure between.ice and water was presented. And then developments of all kinds of frost heave prediction models were summarized. For further researching the frozen fringe it is urgent to continually strengthen the study of frost heave mechanism, thoroughly measure the characteristic parameters of the frozen fringe and perfect the general evaluation of frost heave prediction models.
出处
《冰川冻土》
CSCD
北大核心
2000年第1期90-95,共6页
Journal of Glaciology and Geocryology
基金
国家自然科学基金资助项目!49771023
关键词
冻结缘
未冻水含量
导湿系数
冻胀模型
冻土
frozen fringe
unfrozen water content
hydraulic conductivity, frost heave prediction model
