| The 'thermal semi-conductor' effect of crushed rocks | |
| Cheng Guodong; Lai Yuanming; San Zhizhong; Jiang Fan | |
| 刊名 | PERMAFROST AND PERIGLACIAL PROCESSES
 |
| 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 |
| DOI | 10.1002/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 |
| 出版者 | JOHN WILEY & SONS LTD |
| WOS记录号 | WOS:000247244200004 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.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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