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文章摘要
刘文博,吴雨薇,张皖湘,胡 俊.变直径冻结管冻结温度场发展规律数值分析[J].海南大学学报编辑部:自然科学版,2018,36(4):.
变直径冻结管冻结温度场发展规律数值分析
Numerical analysis on development law of freezing temperature field of variable diameter freezing pipe
投稿时间:2018-07-30  修订日期:2018-11-14
DOI:
中文关键词: 变直径冻结管;数值模拟;人工冻结;温度场
英文关键词: variable diameter freezing tube; Numerical simulation; Artificial freezing; Temperature field
基金项目:海南省自然科学(518MS122,518QN307)、中国博士后科学基金资助项目(2018M630722),国家自然科学(51368017);
作者单位E-mail
刘文博 海南大学 土木建筑工程学院 1139596074@qq.com 
吴雨薇 海南大学 土木建筑工程学院  
张皖湘 中铁时代建筑设计院有限公司  
胡 俊 海南大学 土木建筑工程学院 183633299@qq.com 
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中文摘要:
      人工冻结技术中变直径螺纹冻结管是一种新型冻结管,它具备无需挖孔和缩短工期等优点。主要讨论变直径螺纹冻结管在冻结过程中冻土帷幕情况以及温度场的变化规律。运用有限元软件建立三维数值模型,针对变直径冻结管冻土壁温度场的发展和分布规律进行研究。数值计算表明:30d到40d强弱区的最终冻土厚度均为0.5m,其中弱区最小半径为0.03m使冻土厚度达到0.5m,半径未达到0.03m时冻土厚度无法达到要求;强弱区交界处的冻土厚度并不受强弱区域的影响,保持冻土厚度0.5m。在工程中可以通过所得结果为今后类似工程设计提供了理论依据。
英文摘要:
      The variable diameter thread frozen pipe is a new kind of frozen pipe in artificial freezing technology. This paper mainly discusses the variation of frozen soil curtain and temperature field in the process of freezing. A three-dimensional numerical model was established by using finite element software to study the development and distribution of the wall temperature field of frozen tundra with variable diameter. The numerical calculation shows that the ultimate thickness of the permafrost in the strong and weak zones of 30d to 40d is 0.5m. The minimum radius of the weak zone is 0.03m, which makes the thickness of the permafrost reach 0.5m. The thickness of permafrost at the junction of strong and weak areas is not affected by the strong and weak areas, and the thickness of permafrost is kept at 0.5m. The results can provide theoretical basis for similar engineering design in the future.
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