| 冻胀过程与冻结缘特性 |
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| 引用本文： | 何平,邴慧,张钊,杨成松.冻胀过程与冻结缘特性[J].冰川冻土,2004,26(Z1):21-25. |
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| 作者姓名： | 何平 邴慧 张钊 杨成松 |
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| 作者单位： | State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou Gansu 730000, Chinas,The First Survey and Design Institute of China Railway, Lanzhou Gansu 730000, China |
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| 基金项目： | 中国科学院知识创新工程项目
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the Knowledge Innovatation Project of Cold and Arid Region Engineering and Environmental Research Institute, CAS |
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| 摘 要： | The complex process of soil freezing which relates to moisture field, temperature and stress field usually accompanies water migration and crystallization. The mechanism of water migration in the -frozen fringe is blurry though there have rather mature theory analyzing water migration in the unfrozen zone and fully-frozen zone. It is a visualized and easy method to calculate the potential gradient of frozen fringe by frost heave amount, the duration of the steady state of frost heaving and the coefficient of permeability based on the Darcy penetration theory, not directly considering water driving force, ice segregation temperature and the thickness of frozen fringe. The method is feasible by comparing the calculated amount of frost-heaving with the test data.
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| 关 键 词： | frost heave potential gradient prediction 冻胀 过程 冻结缘 特性 Fringe Characteristics Frost Heave feasible comparing test data segregation thickness driving force duration steady state frost heave heaving coefficient permeability based |
Process of Frost Heave and Characteristics of Frozen Fringe |
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| HE Ping,BING Hui,ZHANG Zhao,YANG Cheng-song.Process of Frost Heave and Characteristics of Frozen Fringe[J].Journal of Glaciology and Geocryology,2004,26(Z1):21-25. |
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| Authors: | HE Ping BING Hui ZHANG Zhao YANG Cheng-song |
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| Abstract: | The complex process of soil freezing which relates to moisture field, temperature and stress field usually accompanies water migration and crystallization. The mechanism of water migration in the -frozen fringe is blurry though there have rather mature theory analyzing water migration in the unfrozen zone and fully-frozen zone. It is a visualized and easy method to calculate the potential gradient of frozen fringe by frost heave amount, the duration of the steady state of frost heaving and the coefficient of permeability based on the Darcy penetration theory, not directly considering water driving force, ice segregation temperature and the thickness of frozen fringe. The method is feasible by comparing the calculated amount of frost-heaving with the test data. |
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| Keywords: | frost heave potential gradient prediction |
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