QQ客服 官方微博 反馈留言

	Evaluating the cooling performance of crushed-rock interlayer embankments with unperforated and perforated ventilation ducts in permafrost regions
	Zhang, Mingyi; Zhang, Xiyin; Li, Shuangyang; Wu, Daoyong; Pei, Wansheng; Lai, Yuanming
刊名	ENERGY
	2015-12-15
卷号	93页码:874-881
关键词	Cooling performance Crushed-rock interlayer embankment Perforated ventilation duct Expressway Permafrost region
ISSN号	0360-5442
DOI	10.1016/j.energy.2015.08.059
通讯作者	Zhang, Mingyi(myzhang@lzb.ac.cn)
英文摘要	The crushed-rock interlayer embankment with ventilation ducts has been advocated to stabilize the permafrost stratum under expressways in permafrost regions. This embankment must render better cooling effect than railway embankments because the expressway surface is wider and hotter. To this purpose, the walls of the ventilation ducts need to be perforated. This study evaluates the cooling performance of the rushed-rock interlayer embankments with unperforated and perforated ventilation ducts along an expressway in permafrost regions of the Qinghai-Tibet Plateau. A three-dimensional numerical model is developed based on heat and mass transfer theories. The model includes the coupled heat transfer between air and ventilation duct wall, the air convective heat transfer in crushed-rock layer, and the heat conduction with phase change in soil layers. The numerical results indicate that if the ventilation ducts are perforated and embedded at the top of the crushed-rock interlayer, the cooling effect of the embankment can be greatly enhanced. A good cooling performance can still be achieved even if the centerline spacing of the perforated ventilation ducts is enlarged to 4 m to facilitate the construction. The crushed-rock interlayer embankment with perforated ventilation ducts is a better candidate structure for expressways in permafrost regions of the Qinghai-Tibet Plateau. (C) 2015 Elsevier Ltd. All rights reserved.
收录类别	SCI
WOS关键词	QINGHAI-TIBET RAILWAY ; LAYER
WOS研究方向	Thermodynamics ; Energy & Fuels
WOS类目	Thermodynamics ; Energy & Fuels
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000367630200079
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557123
专题	寒区旱区环境与工程研究所
通讯作者	Zhang, Mingyi
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	Zhang, Mingyi,Zhang, Xiyin,Li, Shuangyang,et al. Evaluating the cooling performance of crushed-rock interlayer embankments with unperforated and perforated ventilation ducts in permafrost regions[J]. ENERGY,2015,93:874-881.
APA	Zhang, Mingyi,Zhang, Xiyin,Li, Shuangyang,Wu, Daoyong,Pei, Wansheng,&Lai, Yuanming.(2015).Evaluating the cooling performance of crushed-rock interlayer embankments with unperforated and perforated ventilation ducts in permafrost regions.ENERGY,93,874-881.
MLA	Zhang, Mingyi,et al."Evaluating the cooling performance of crushed-rock interlayer embankments with unperforated and perforated ventilation ducts in permafrost regions".ENERGY 93(2015):874-881.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。