中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (S2): 1-5.doi: 10.16265/j.cnki.issn1003-3033.2018.S2.001

• 安全科学技术基础学科 •    下一篇

气温持续升高对青藏铁路运输安全的影响研究*

孟超1 高级工程师, 韩龙武2 高级工程师, 赵相卿2 高级工程师, 戴路生1 高级工程师, 秦宏1 工程师, 马哲1 工程师   

  1. 1 国家铁路局 工程质量监督中心, 北京 100891;
    2 中铁西北科学研究院有限公司, 甘肃 兰州 730030
  • 收稿日期:2018-08-26 修回日期:2018-10-23 出版日期:2018-12-30 发布日期:2020-11-11
  • 作者简介:孟 超 (1968—),男,山东滕州人,本科,高级工程师,主要从事铁路工程质量安全监督工作。E-mail:shmengchao@126.com。

Study on influence of continuous rising temperature on transportation safety of Qinghai-Tibet railway

MENG Chao1, HAN Longwu2, ZHAO Xiangqing2, DAI Lusheng1, QIN Hong1, MA Zhe1   

  1. 1 Center of Engineering Quality Supervision, National Railway Administration, Beijing 100891, China;
    2 Northwest Research Institute Co., Ltd. of C.R.E.C, Lanzhou Gansu 730030,China
  • Received:2018-08-26 Revised:2018-10-23 Online:2018-12-30 Published:2020-11-11

摘要: 在全球升温的背景下,为确保跨越多年冻土区的青藏铁路安全运营,收集青藏铁路沿线的气候变化资料,调查铁路路基对气候变化的响应,结合对路基、桥梁和涵洞等方面的病变,提出确保青藏铁路多年冻土区工程的稳定性对策。结果表明:气温升高和降雨增加导致青藏铁路沿线多年冻土退化;设置排水沟、保温盲沟、坡脚增设土护道以及封堵道床、涵洞路基体空洞等措施可防止积水对建筑物造成冻胀作用,预防多年冻土造成的热侵蚀;增设热棒、坡脚增设土护道加保温板、坡面采用片(碎)石护坡、遮阳板、植草等坡面热防护措施可冷却路基,保护多年冻土。

关键词: 青藏铁路, 气候变化, 运输安全, 路基, 桥梁, 涵洞

Abstract: Under the background of global warming, in order to ensure the safe operation of Qinghai-Tibet railway across the permafrost region,the climate change data along the Qinghai-Tibet railway was collected. The response of railway subgrade to climate change was investigated. In accordance with the pathological changes of subgrade, bridge and culvert, the countermeasures were put forward to ensure the stability of the project in permafrost region of the Qinghai-Tibet railway. The results show that the degradation of permafrost is affected by the increase of temperature and rainfall along the Qinghai-Tibet railway. Measures such as drainage ditch, thermal insulation blind ditch, additional soil protection at the foot of the slope, blocking bed, culvert matrix voids can be taken to prevent water accumulation from causing frost heave effect on buildings,and prevent thermal erosion caused by permafrost. The addition of hot rods, the addition of soil protection roads at the foot of the slope, and the use of sheet(broken) stone protection slopes, sunshade panels, grass planting and other slope thermal protection measures can be carried out to cool the roadbed and protect permafrost.

Key words: Qinghai-Tibet railway, climate change, subgrade, bridge, culvert

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