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作者投稿 专家审稿 编辑办公 编委办公 主编办公

冰川冻土 ›› 2022, Vol. 44 ›› Issue (2): 470-484.doi: 10.7522/j.issn.1000-0240.2022.0052

• 寒区工程与灾害 • 上一篇    


周保1(), 魏刚2(), 张永艳1, 魏赛拉加1, 蒋观利3   

  1. 1.青海省地质环境监测总站,青海 西宁 810008
    2.青海省环境地质勘查局,青海 西宁 810008
    3.中国科学院 西北生态环境资源研究院 冻土工程国家重点实验室,甘肃 兰州 730000
  • 收稿日期:2022-02-22 修回日期:2022-03-18 出版日期:2022-04-30 发布日期:2022-06-10
  • 通讯作者: 魏刚 E-mail:41448053@qq.com;158213989@qq.com
  • 作者简介:周保,正高级工程师,主要从事工程地质、地质灾害调查研究. E-mail: 41448053@qq.com
  • 基金资助:

Study on the diversities of thermal impacts of Qinghai-Tibet Highway on permafrost under different surface conditions

Bao ZHOU1(), Gang WEI2(), Yongyan ZHANG1, Sailajia WEI1, Guanli JIANG3   

  1. 1.Qinghai Geological Environment Monitoring Station,Xining 810008,China
    2.Qinghai Bureau of Environmental Geology Exploration,Xining 810008,China
    3.State Key Laboratory of Frozen Soil Engineering,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
  • Received:2022-02-22 Revised:2022-03-18 Online:2022-04-30 Published:2022-06-10
  • Contact: Gang WEI E-mail:41448053@qq.com;158213989@qq.com



关键词: 多年冻土, 地表条件, 青藏公路, 热影响, 青藏高原


In permafrost regions, road infrastructures have thermal impacts on adjacent permafrost, but the diversities of the feedback of permafrost under different surface conditions from road thermal impact is not totally understood. Based on the monitoring data of two monitoring sites along the Qinghai-Tibet Highway, this work studies the diversities of thermal impact of Qinghai-Tibet Highway on adjacent permafrost under different surface conditions. The results show that the Qinghai-Tibet Highway has a significant thermal impact on the permafrost on both sides, but the feedbacks from the thermal impact are different due to different surface conditions. Compared to the site with higher vegetation coverage, the mean annual ground temperature as well as the active layer thickness are respective greater, along with a wider horizontal thermal impact in the site with lower vegetation coverage. In addition, for the site with lower vegetation coverage, at the slope foot of the embankment, because of its bare surface, the topsoil is more susceptible to external disturbances, leading to form a thermal exchange pattern differing from other positions, and this may be a reason causes the different thermal states between the two sites. In present, there are many linear projects in the Qinghai-Tibet Engineering Corridor which makes it necessary to take into account the interactions between projects and their relationships with permafrost. This work can provide references for the setting of reasonable distance between linear projects in the Qinghai-Tibet Engineering Corridor in the permafrost region of the Qinghai-Tibet Plateau as well as for the reasonable distance arrangement between bidirectional roadbed of the Qinghai-Tibet Expressway to be built, so as to reduce mutual disturbances and ensure the operational safety of the them.

Key words: permafrost, surface condition, Qinghai-Tibet Highway, thermal impact, Qinghai-Tibet Plateau


  • P642.14