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开河期冰盖纵向冰缝形成机理

茅泽育, 赵雪峰, 王爱民, 张磊

茅泽育, 赵雪峰, 王爱民, 张磊. 开河期冰盖纵向冰缝形成机理[J]. 水科学进展, 2009, 20(3): 434-437.
引用本文: 茅泽育, 赵雪峰, 王爱民, 张磊. 开河期冰盖纵向冰缝形成机理[J]. 水科学进展, 2009, 20(3): 434-437.
MAO Ze-yu, ZHAO Xue-feng, WANG Ai-min, ZHANG Lei. Mechanism of longitudinal-crack formation during river-ice breakup[J]. Advances in Water Science, 2009, 20(3): 434-437.
Citation: MAO Ze-yu, ZHAO Xue-feng, WANG Ai-min, ZHANG Lei. Mechanism of longitudinal-crack formation during river-ice breakup[J]. Advances in Water Science, 2009, 20(3): 434-437.

开河期冰盖纵向冰缝形成机理

基金项目: 国家自然科学基金资助项目(50579030)
详细信息
    作者简介:

    茅泽育(1962- ).男,浙江绍兴人.教授,主要从事水力学及河流动力学方面研究.E-mail:maozeyu@tsinghua.edu.cn

  • 中图分类号: TV875

Mechanism of longitudinal-crack formation during river-ice breakup

Funds: The study is financially supported by the National Natural Science Foundation of China(No.50579030).
  • 摘要: 春季河道武开河可能导致冰坝形成,至今仍缺乏以力学机制为基础的开河预测方法。春季河道径流增加导致与岸壁冻结的冰盖底部产生上举力,并引起纵向冰缝产生。利用力学分析中弹性基础上的梁理论对开河期冰盖纵向冰缝形成机理进行了研究,提出了纵向冰缝间距解析表达式,可用于开河期冰盖断裂预测。应用原型观测资料对提出的纵向冰缝间距理论表达式进行了验证分析。研究结果表明,开河期纵向冰缝间距计算值与实测值吻合较好。
    Abstract: The mechanical breakup of ice covers during spring often lead to the serious ice-dam formation.However,the method for predicting the ice-cover breakup based upon the mechanical principle is in short supply.In this paper with the mechanical-analysis methodology the mechanism of the longitudinal-crack formation during the river-ice initial breakup is fully investigated by using the theory of beams on elastic foundation.A theoretical expression for predicting ice-cover breakup is presented.The comparison with the field observations indicates that the presented formula can to predict the location accurately.
  • [1] 茅泽育,许听,王爱民.等.开河期冰坝预测方法研究[J].水利水电科技进展,2007,27(3):76-80.(MAO Ze-yu,xu Xin,WANG Ai-min,et al.Advances in predictions methods for breakup ice-jams[J].Advances in Science and Technology d Water Resources,2007,27(3):76-80.(in Chinese))
    [2] 张磊.江河春季开河机理及冰坝形成和演变研究[D].北京:清华大学,20115..(ZnANG Lei.River-ice mechanism and ice-dam formation and evolution[D].Beijing:Tsinghua University,2005.(in Chinese))
    [3] 茅泽育,赵雪峰,王爱民,等.武开河的边壁阻力判别准则[J],冰川冻土,2008,30(3):508-513.(MAO Ze-yu,ZHAO Xue-feng,WANG Ai-min,et al.Side-resistance criterion for onset of mechanical ice-cover breakup[J].Journal of Glaciology and Geocryology,2008,30 (3):5(}8-513.(in Chinese))
    [4] BELTAOS S.A conceptual model of river ice brakp[J].CanJ Civ Eng,1984,11:516-529.
    [5] BELTAOS S.Initial fractute petterns of river ice cover[R].Burlington Ont:National Water Research Institute,1985.
    [6] HETENYI M.Beams on elastic foundation[M].Michigan:Cushing-Malloy,INC.1955.
    [7] 刘鸿文.材料力学[M].北京:高等教育出版社.1992.(LIU HonK-wen.Mechanics of materials[M].Beijing:Higher Education Press,1992.(in Chinese))
    [8] ASHTON G A,River and lake ice engineering[M].Michigan:Water Resources Publications,USA,1986.
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  • 被引次数: 0
出版历程
  • 收稿日期:  2008-06-25
  • 刊出日期:  2009-05-24

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