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	Thermal stabilization of duct-ventilated railway embankments in permafrost regions using ripped-rock revetment
	Hou Yandong1,3; Wu Qingbai1,2; Niu Fujun1,2; Liu Yongzhi1,2
刊名	COLD REGIONS SCIENCE AND TECHNOLOGY
	2015-12-01
卷号	120页码:145-152
关键词	Qinghai-Xizang Railway Duct-ventilated embankment Ripped-rock revetment Artificial permafrost table Cooling effects
ISSN号	0165-232X
DOI	10.1016/j.coldregions.2015.10.002
通讯作者	Wu Qingbai(qbwu@lzb.ac.cn)
英文摘要	Duct-ventilated railway embankment (DVE) is relatively effective at preserving underlying permafrost under the current climatic conditions. To increase its capacity to adapt to climate warming, a ripped-rock revetment was added to the DVE. To evaluate the effectiveness in cooling of different embankment treatments, long-term insitu soil temperature data were collected from eight experimental embankment sections along the Qinghai-Xizang Railway in the Beiluhe region between 2002 and 2012. Analysis of these soil temperatures shows that the addition of the ripped-rock revetment is effective in improving the cooling capacity of the DVE, enhancing the thermal stability of both the embankment body and the underlying permafrost. Soil temperature in the overall embankment decreases about 0.5-1.0 degrees C, the temperature of the underlying permafrost decrease, the artificial permafrost table is further raised, and average range for cooling effect gets further enlarged under the joint effect of ventilated ducts and ripped-rock revetment. What is more, this cooling effect of embankments with low-positioned ducts is greater than that with high-positioned ducts. Besides, cooling effect is greater for ducts with a diameter of 30 cm coupled with ripped-rock revetment than that of 40 cm. Another positive outcome of this reinforcement is the greater restriction in the temperature difference between the sunny and shady embankment shoulders, especially for the embankments with low-positioned ducts or with a diameter of 30 cm. Therefore, implementation of ripped-rock revetment is recommended for duct-ventilated embankments, particularly for embankments where high-positioned ducts are present. (C) 2015 Elsevier B.V. All rights reserved.
收录类别	SCI
WOS关键词	QINGHAI-TIBET RAILWAY ; TEMPERATURE-CONTROLLED VENTILATION
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000365055400015
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557179
专题	寒区旱区环境与工程研究所
通讯作者	Wu Qingbai
作者单位	1.Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Cold & Arid Environm & Engn Res Inst, Beiluhe Observat Stn Frozen Soil Environm & Engn, Lanzhou 730000, Peoples R China 3.Univ Chinese Acad Sci, Sch Resources & Environm, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Hou Yandong,Wu Qingbai,Niu Fujun,et al. Thermal stabilization of duct-ventilated railway embankments in permafrost regions using ripped-rock revetment[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2015,120:145-152.
APA	Hou Yandong,Wu Qingbai,Niu Fujun,&Liu Yongzhi.(2015).Thermal stabilization of duct-ventilated railway embankments in permafrost regions using ripped-rock revetment.COLD REGIONS SCIENCE AND TECHNOLOGY,120,145-152.
MLA	Hou Yandong,et al."Thermal stabilization of duct-ventilated railway embankments in permafrost regions using ripped-rock revetment".COLD REGIONS SCIENCE AND TECHNOLOGY 120(2015):145-152.

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