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	Adjusting temperature distribution under the south and north slopes of embankment in permafrost regions by the ripped-rock revetment
	Lai, YM; Zhang, SJ; Zhang, LX; Xiao, JZ
刊名	COLD REGIONS SCIENCE AND TECHNOLOGY
	2004-08-01
卷号	39期号:1页码:67-79
关键词	porous media embankment with south and north slopes adjusting temperature distribution permafrost table
ISSN号	0165-232X
DOI	10.1016/j.coldregions.2004.04.003
通讯作者	Lai, YM(ymlai@lzb.ac.cn)
英文摘要	In this paper, the finite-element formula of convective heat transfer in porous media is obtained by using the Galerkin's method according to the continuity, momentum and energy equations of fluid heat convection for solving the computational problem of temperature field on the ripped-rock revetment embankment in Qing-Tibetan railway. The temperature changes of the ripped-rock revetment and common ballast embankments with south and north slopes have been investigated in coming 24 years, respectively. The results indicate that the ripped-rock of 10 cm diameter is paved on the south and north side slopes of common embankment ballast with the corresponding thickness of 1.6 and 0.8 m, respectively, when the temperature difference of the south and north slopes is 1.8 degreesC, which is able to make the temperature field distribution symmetrical during summertime, permafrost table greatly raised above the native ground surface with frost-susceptible sub-clay (the active layer before embankment construction) completely frozen under embankment during the time, and eliminate the disasters of longitudinal cracks resulting from the uneven settlement of embankment. Thus, we strongly suggest that the ripped-rock revetment embankment be adopted as a kind of embankment structure of Qing-Tibetan railway with south and north slopes in permafrost regions in order to protect the railway as much as possible. (C) 2004 Elsevier B.V. All rights reserved.
收录类别	SCI
WOS关键词	STAGNANT THERMAL-CONDUCTIVITY ; POROUS-MEDIA ; NATURAL-CONVECTION ; MASS-TRANSFER ; HEAT
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:000222986200007
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2555595
专题	寒区旱区环境与工程研究所
通讯作者	Lai, YM
作者单位	Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Lai, YM,Zhang, SJ,Zhang, LX,et al. Adjusting temperature distribution under the south and north slopes of embankment in permafrost regions by the ripped-rock revetment[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2004,39(1):67-79.
APA	Lai, YM,Zhang, SJ,Zhang, LX,&Xiao, JZ.(2004).Adjusting temperature distribution under the south and north slopes of embankment in permafrost regions by the ripped-rock revetment.COLD REGIONS SCIENCE AND TECHNOLOGY,39(1),67-79.
MLA	Lai, YM,et al."Adjusting temperature distribution under the south and north slopes of embankment in permafrost regions by the ripped-rock revetment".COLD REGIONS SCIENCE AND TECHNOLOGY 39.1(2004):67-79.

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