Research on the Mechanisms of Frost Heave and Thaw Settlement, Influencing Factors, and Engineering Prevention and Control Technologies

Debin Lei

doi:10.54691/hz36j305

Authors

Debin Lei

DOI:

https://doi.org/10.54691/hz36j305

Keywords:

Frost Heave and Thaw Settlement; Frozen Soil; Water Migration; Engineering Prevention and Control; Multi-field Coupling.

Abstract

Frost heave and thaw settlement are core problems restricting the construction and safe operation of infrastructure in cold regions. This phenomenon widely exists in seasonal frozen soil and permafrost regions, which will lead to uneven deformation of engineering structures, cracks, and even safety accidents. Based on the systematic analysis of the physical process of frost heave and thaw settlement, this paper expounds the development of classical theories such as capillary theory and frozen fringe theory, and discusses the key influencing factors including soil properties, water content, temperature gradient and engineering load. On this basis, a comprehensive technical system for frost heave and thaw settlement prevention and control is constructed from three aspects: engineering measures, material improvement and intelligent monitoring. Combined with typical engineering cases in seasonal frozen soil areas and plateau permafrost areas, the application effect of various prevention and control technologies is verified. Finally, the future research directions in the fields of multi-field coupling mechanism, intelligent prevention and control equipment and full life cycle management are prospected.

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