A novel simple practical thermal-hydraulic-mechanical (THM) coupling model with water-ice phase change

被引：18

作者：

Li, Guofeng ^{[1
]}

Li, Ning ^{[1
]}

Bai, Yue ^{[2
]}

Liu, Naifei ^{[3
]}

He, Mingming ^{[1
]}

Yang, Min ^{[1
]}

机构：

[1] Xian Univ Technol, Inst Geotech Engn, Xian 710048, Peoples R China

[2] Top Int Engn Corp, Xian 710054, Peoples R China

[3] Xian Univ Architecture & Technol, Sch Civil Engn, Xian 710055, Peoples R China

来源：

COMPUTERS AND GEOTECHNICS | 2020年 / 118卷

基金：

中国国家自然科学基金;

关键词：

Rock mechanics; Water-ice phase change; THM coupling; PERMAFROST REGIONS; FREEZING PROCESSES; POROUS-MEDIA; HEAT; EMBANKMENT; REGIME;

D O I：

10.1016/j.compgeo.2019.103357

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

To reduce the threat from freeze-thaw weathering and to improve the safety of projects in permafrost areas, it is necessary to research freeze-thaw failure mechanisms and engineer safeguarding measures. Therefore, it is essential and effective to develop a reasonable, simple, practical and accurate thermal-hydraulic-mechanical (THM) coupling model with water-ice phase change. A simple model is embedded in the FLAC3D software package using FISH language. The model is developed by combining an ice-water phase change model and the THM coupling model. It is verified and extended via the uniform freeze-thaw test and the unidirectional freeze-thaw test, respectively. The results of the tests are in good agreement with laboratory tests, showing that the simplified algorithm is feasible. The favourable practical ability of the developed THM model makes it well suited for use in exploring multi-field change laws. It is an effective tool for analysing freeze-thaw failure mechanisms and engineering safeguard measures in permafrost regions.

引用

页数：17

共 29 条

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