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冰川冻土 ›› 1998, Vol. 20 ›› Issue (1): 36-41.

• 研究论文 • 上一篇    下一篇

青康公路多年冻土区路堤的临界高度

吴紫汪1, 朱林楠1, 郭兴民1, 王晓阳2, 房建宏2   

  1. 1. 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;
    2. 青海省公路科学研究勘测设计院, 西宁810000
  • 收稿日期:1997-05-15 出版日期:1998-02-25 发布日期:2012-04-26
  • 基金资助:
    国家自然科学基金课题(49471020)和交通部行业联合科技攻关项目.

Critical Height of the Embankment in the Permafrost Regions along the Qinghai-Kangding Highway

WU Zi-Wang1, ZHU Lin-Nan1, GUO Xin-Ming1, WANG Xiao-Yang2, FANG Jian-Hong2   

  1. 1. State Key Laboratory of Frozen Soil Engineering, LIGG, CAS, 730000;
    2. Qinghai Institute of Highway Research and Survey, Xining 810000
  • Received:1997-05-15 Online:1998-02-25 Published:2012-04-26

摘要: 青康公路运行35a后,经沿线调查与钻探表明,在多年冻土区内,凡路堤高度低于0.8m的富冰地段,历年均有不同程度的热融、翻浆病害发生;凡路堤高度大于0.8m的路段则基本保持稳定。在全面分析路堤下冻土上限的升降规律基础上,并考虑目前区内冻土明显退化的现实与高级路面对路基变形的要求,提出高原多年冻土区修筑道路时,砂砾路面路堤高度应为1.6m,水泥混凝土路面路堤高度应为2.0m.

关键词: 冻土, 路基, 路堤临界高度

Abstract: The survey and drilling investigation in the permafrost regions along the Qinghai-Kangding Highway, which has been operated for 35 years, indicate that the line where the height of the embankment is lower than 0.8 m suffers from frost boiling and thermokast to different extent every year, and that the line where the height of embankment was over 0.8 m maintains a steady state. Based on an overall analysis on the change in permafrost table under the embankment, after considering the fact that the permafrost in the area is degrading and the requirement of the deformation of the road surface of high quality, it is suggested that the height of embankment is 1.6 m for the gravel road, and 2.0 m for cement concrete road in the plateau permafrost regions.

Key words: permafrost, embankment, height of embankement

中图分类号: 

  • P642.14