| 渗流对多年冻土区路基温度场影响的数值模拟 |
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| 引用本文： | 令锋,吴紫汪.渗流对多年冻土区路基温度场影响的数值模拟[J].冰川冻土,1999,21(2):115-119. |
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| 作者姓名： | 令锋 吴紫汪 |
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| 作者单位： | 中国科学院兰州冰川冻土研究所冻土工程国家重点实验室!兰州，730000，中国科学院兰州冰川冻土研究所冻土工程国家重点实验室!兰州，730000 |
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| 摘 要： | 运用传热学理论和渗流理论导出了路堤侧向有地表积水入渗情形下，多年冻土区路基温度场渗流场耦合作用的控制微分方程，然后以现场观测资料为基础，用Ｇａｌｅｒｋｉｎ有限元方法对青康公路（２１４国道）花石峡冻土研究站１号试验路段路基温度场未来可能的变化状态进行了数值预报。结果表明，若无渗流作用，５ａ后路堤左侧天然地表、路堤堤身和路堤右侧天然地表的最大季节融深分别为１．４ｍ，３．２ｍ和１．４ｍ；若有渗流作用，则
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| 关 键 词： | 多年冻土区 路基 渗流 温度场 有限元 数值模拟 |
Numerical Simulation of the Infulance of Seepage on Temperature Field of Roadbed in Permafrost Regions |
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| LING Feng, WU Ziwang.Numerical Simulation of the Infulance of Seepage on Temperature Field of Roadbed in Permafrost Regions[J].Journal of Glaciology and Geocryology,1999,21(2):115-119. |
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| Authors: | LING Feng WU Ziwang |
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| Abstract: | This paper discusses the influence of seepage of surface water in the sides of embankment on the temperature field of roadbed in permafrost regions. First, a mathematical model is established based on the heat transfer theory and seepage theory.Then, based on the observed data, the variation process of temperature field in the experimental roadbed,which is in Huashixia along the Qinghai-KangdingHighway in the Tibetan Plateau, after five years fromthe present is simulated in terms of Galerkin finite element method. The prediction results show that in case of no seepage effect, the maximum thawing deepths of ground in left sides of embankment, embankment itself and right side of embankment in the fifth year are l.4 m, 3.2 m, l.4 m and in case of seepage effect they are 1.4 m, 3.6 m, 1.6 m, respectively. The seepage of surface water in the sides of embankment will deepen the maximum thawing depth, and the nearer the boundary of roadbed in horizonal direction to the headwaiers, the deeper the maximum thawing depth in the vertical direction is. |
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| Keywords: | permafrost regions seepage roadbed temperature field finite element method |
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