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Chinese Academy of Sciences Institutional Repositories Grid
The 'thermal semi-conductor' effect of crushed rocks

文献类型:期刊论文

作者Cheng Guodong; Lai Yuanming; San Zhizhong; Jiang Fan
刊名PERMAFROST AND PERIGLACIAL PROCESSES
出版日期2007-04-01
卷号18期号:2页码:151-160
关键词crushed-rock layer Rayleigh-Benard convection chimney effect wind-forced convection global warming
ISSN号1045-6740
DOI10.1002/ppp.575
通讯作者Cheng Guodong(gdcheng@lzb.ac.cn)
英文摘要Coarse rock layers are widespread in periglacial environments and can lower the temperature of underlying ground. We show that the cooling effect of closed and sloping rock layers is in the form of Rayleigh-Benard convection, while that of open and inclined rock layers is via the 'chimney effect' and wind-forced convection. Cooling has been observed in numerical simulations, laboratory models and field mock-up experiments. Coarse rocks were widely used in the construction of the Qinghai-Xizang Railroad and temperature monitoring of their performance indicates that they do have a cooling effect on embankments. The advantages of utilising such materials are many, including high efficiency, ease of installation, environmental friendliness and relatively low cost. It is recommended that they be used in engineering projects in sensitive permafrost areas as a cooling agent and/or a countermeasure against possible global warming. Copyright (C) 2007 John Wiley & Sons, Ltd.
收录类别SCI
WOS关键词BOUNDARY-CONDITIONS ; PERMAFROST AREAS ; POROUS LAYER ; EMBANKMENTS ; CONVECTION ; PLATEAU ; FLOW
WOS研究方向Physical Geography ; Geology
WOS类目Geography, Physical ; Geology
语种英语
WOS记录号WOS:000247244200004
出版者JOHN WILEY & SONS LTD
URI标识http://www.irgrid.ac.cn/handle/1471x/2555920
专题寒区旱区环境与工程研究所
通讯作者Cheng Guodong
作者单位1.Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China
2.Chinese Acad Sci, Inst Engn Thermophys, Beijing, Peoples R China
推荐引用方式
GB/T 7714
Cheng Guodong,Lai Yuanming,San Zhizhong,et al. The 'thermal semi-conductor' effect of crushed rocks[J]. PERMAFROST AND PERIGLACIAL PROCESSES,2007,18(2):151-160.
APA Cheng Guodong,Lai Yuanming,San Zhizhong,&Jiang Fan.(2007).The 'thermal semi-conductor' effect of crushed rocks.PERMAFROST AND PERIGLACIAL PROCESSES,18(2),151-160.
MLA Cheng Guodong,et al."The 'thermal semi-conductor' effect of crushed rocks".PERMAFROST AND PERIGLACIAL PROCESSES 18.2(2007):151-160.

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来源:寒区旱区环境与工程研究所

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