气候变化领域集成服务门户(CCPortal): Field experiment Study on ventilation characteristics of block stones embankment in Qinghai-Tibet Railway

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DOI	10.4028/www.scientific.net/AMR.479-481.174
	Field experiment Study on ventilation characteristics of block stones embankment in Qinghai-Tibet Railway
	Bian, Xiaolin; He, Ping; Wu, Qingbai; Shi, Yehui
发表日期	2012
ISSN	1022-6680
起始页码	174
结束页码	+
卷号	479-481
英文摘要	The forced convection in the blocky stone layer plays a major impact on the temperature field of embankment in Qinghai-Tibetan Plateau. Thus, a field test on air flow inside the blocky stone layer has been carried out to make clear the ventilation characteristics. The results show that pore-air velocity in embankment slope of following wide side is in well accordance with the external wind, and the temperature in sunny slope is higher than in shaded slope. The variation of velocity in sunny slope is larger than shade in summer, which is inverse in winter. The time of air flow through an embankment was calculated by the Bernoulli Equation, and the results show that the air can flow though the embankment in less than a minute, indicating the pore-air velocity in blocky stone layers is mainly influced by atmospheric wind field and blocky stone layers have good ventilation ability. So, it is advisable to consider the ventilation ability in analyzing the temperature field of block stones.
英文关键词	Permafrost; Nonlinear Analysis; Forced Convection; Velocity Field; Temperature Field
语种	英语
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Manufacturing ; Engineering, Mechanical ; Materials Science, Multidisciplinary
WOS关键词	PERMAFROST REGIONS
WOS记录号	WOS:000311979400035
来源期刊	ADVANCED MECHANICAL DESIGN, PTS 1-3
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/240293
作者单位	[Bian, Xiaolin; He, Ping] Beijing Jiaotong Univ, Minist Educ, Tunnel & Underground Engn Res Ctr, Beijing 100044, Peoples R China; [Wu, Qingbai] Chinese Acad Sci, Cold & Arid Regions Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Shi, Yehui] PLA Univ Sci & Technol, Nanjing 210007, Peoples R China
推荐引用方式 GB/T 7714	Bian, Xiaolin,He, Ping,Wu, Qingbai,et al. Field experiment Study on ventilation characteristics of block stones embankment in Qinghai-Tibet Railway[J]. 中国科学院西北生态环境资源研究院,2012,479-481.
APA	Bian, Xiaolin,He, Ping,Wu, Qingbai,&Shi, Yehui.(2012).Field experiment Study on ventilation characteristics of block stones embankment in Qinghai-Tibet Railway.ADVANCED MECHANICAL DESIGN, PTS 1-3,479-481.
MLA	Bian, Xiaolin,et al."Field experiment Study on ventilation characteristics of block stones embankment in Qinghai-Tibet Railway".ADVANCED MECHANICAL DESIGN, PTS 1-3 479-481(2012).