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冰川冻土 ›› 2014, Vol. 36 ›› Issue (4): 876-885.doi: 10.7522/j.issn.1000-0240.2014.0105

• 冻土地区工程建设 • 上一篇    下一篇

路基坡脚积水对多年冻土路基稳定性的影响研究进展

胡晓莹1,2, 盛煜1, 李静1, 吴吉春1, 陈继1, 宁作君1,2, 曹元兵1,2, 冯子亮1,2, 王生廷1,2   

  1. 1. 中国科学院 寒区旱区环境与工程研究所 冻土工程国家重点实验室, 甘肃 兰州 730000;
    2. 中国科学院大学, 北京 100049
  • 收稿日期:2014-03-09 修回日期:2014-06-17 出版日期:2014-08-25 发布日期:2014-08-23
  • 通讯作者: 盛煜,E-mail:sheng@lzb.ac.cn E-mail:sheng@lzb.ac.cn
  • 作者简介:胡晓莹(1987-),女,辽宁鞍山人,2013年在兰州交通大学获硕士学位,现为中国科学院寒区旱区环境与工程研究所在读博士研究生,主要从事寒区岩土工程研究.E-mail:xiaoyinghu@lzb.ac.cn
  • 基金资助:

    国家自然科学基金创新群体项目(41121061);国家自然科学基金项目(41271084)资助

Progress in the research of the influence of ponding by embankment on the stability of embankment in permafrost regions

HU Xiaoying1,2, SHENG Yu1, LI Jing1, WU Jichun1, CHEN Ji1, NING Zuojun1,2, CAO Yuanbing1,2, FENG Ziliang1,2, WANG Shengting1,2   

  1. 1. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2014-03-09 Revised:2014-06-17 Online:2014-08-25 Published:2014-08-23

摘要:

多年冻土路基的稳定性很大程度上取决于其下伏多年冻土层的热稳定性. 当融雪、降雨或人为等外界因素形成的路基坡脚积水持续一段时间后,这些积水可能通过入渗对流换热、热边界侵蚀、补给冻胀水分等方式加剧或诱发多年冻土路基热稳定性的下降和丧失. 通过回顾国内外相关文献,从影响多年冻土路基稳定性的因素、积水对路基活动层冻融过程中水分迁移的影响、热融湖塘类积水对冻土路基的热影响、降雨和融雪积水入渗对冻土路基的热影响等方面,归纳总结了坡脚积水对多年冻土路基影响方面的研究进展;在此基础上,提出了对此问题进一步深入的研究展望和探讨.

关键词: 多年冻土路基, 路基积水, 热稳定性

Abstract:

The stability of embankment in permafrost regions depends on the thermal stability of frozen soil under it largely. With the pondings caused by snowmelt, rainfall or other artificial factors beside the embankment for a long time, the water of the ponding can aggravate or induce the decreasing and loss of the thermal stability through infiltration with convection conduction, thermal boundary erosion, providing water for frost heaving, etc. In this paper, the related literatures from domestic and abroad are summarized to understand the research status of the influence of the pondings on the stability of permafrost embankment. These literatures involve the factors of affecting the stability of permafrost subgrade, the influence of water from ponding on the active layer and the thermal effect of the water from thermokarst lake, the seepage water from rainfall, snowmelt or other ponding on permafrost embankment. Based on this, the further outlook and research about this problem are proposed.

Key words: embankment in permafrost regions, ponding by an embankment, thermal stability

中图分类号: 

  • U416