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| DOI | 10.1016/j.enggeo.2021.106166 |
| The effect of horizontal freezing on the characteristics of water migration and matric suction in unsaturated silt | |
| Tang, Tianxiao; Shen, Yupeng; Liu, Xin; Zhang, Zhongqiong; Xu, Jiayi; Zhang, Zhicheng | |
| 通讯作者 | Shen, YP (通讯作者)，Beijing Jiaotong Univ, Beijing Key Lab Track Engn, Beijing 100044, Peoples R China. |
| 发表日期 | 2021 |
| ISSN | 0013-7952 |
| EISSN | 1872-6917 |
| 卷号 | 288 |
| 英文摘要 | Existing research on the mechanism of water migration during horizontal freezing is limited. Available freezing models are mainly applicable to saturated soils subjected vertical freezing and cannot accurately describe the coupled water-heat movement in unsaturated soils. In this paper, based on the Dallavalle formula and Young-Laplace equation, the Smith empirical formulation is used to establish a link between the macroscopic and microscopic water content of the frozen soil, and derive an analytical relationship between the matric suction and unfrozen water content of frozen soil. The formula is simplified to deduce the matric suction of unsaturated silt during horizontal freezing. A laboratory horizontal freezing experiment is carried out to explore the characteristics of the freezing process. The model established for the unsaturated freezing soil is subsequently improved by incorporating the relationships between matric suction, pore ice content, temperature, and unfrozen water content in the model. Using the model, the coupled water-heat movement during horizontal freezing process can be accurately described, and a typical case is analyzed to explore the interactions of temperature, unfrozen water, ice, and matric suction. In addition, the influence of the temperature gradient and initial water content on the freezing process characteristics is studied. |
| 关键词 | ISOTROPIC FROST HEAVENUMERICAL-ANALYSISDEFORMATIONTRANSPORTSTRESSFORCE |
| 英文关键词 | Horizontal freezing; Unsaturated silt; Water migration; Matric suction; Coupled water-heat movement |
| 语种 | 英语 |
| WOS研究方向 | Engineering ; Geology |
| WOS类目 | Engineering, Geological ; Geosciences, Multidisciplinary |
| WOS记录号 | WOS:000655073200026 |
| 来源期刊 | ENGINEERING GEOLOGY
 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/254238 |
| 作者单位 | [Tang, Tianxiao; Shen, Yupeng; Liu, Xin; Xu, Jiayi; Zhang, Zhicheng] Beijing Jiaotong Univ, Sch Civil Engn, Beijing 100044, Peoples R China; [Shen, Yupeng] Beijing Jiaotong Univ, Beijing Key Lab Track Engn, Beijing 100044, Peoples R China; [Zhang, Zhongqiong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Tianxiao,Shen, Yupeng,Liu, Xin,et al. The effect of horizontal freezing on the characteristics of water migration and matric suction in unsaturated silt[J]. 中国科学院西北生态环境资源研究院,2021,288. |
| APA | Tang, Tianxiao,Shen, Yupeng,Liu, Xin,Zhang, Zhongqiong,Xu, Jiayi,&Zhang, Zhicheng.(2021).The effect of horizontal freezing on the characteristics of water migration and matric suction in unsaturated silt.ENGINEERING GEOLOGY,288. |
| MLA | Tang, Tianxiao,et al."The effect of horizontal freezing on the characteristics of water migration and matric suction in unsaturated silt".ENGINEERING GEOLOGY 288(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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