Variation and significance of surface heat after the mechanical sand control of Qinghai-Tibet Railway was covered with sandy sediments
文献类型：期刊论文
| 作者 | Xie, Shengbo1; Qu, Jianjun1; Mu, Yanhu1; Xu, Xiangtian2 |
| 刊名 | RESULTS IN PHYSICS
 |
| 出版日期 | 2017 |
| 卷号 | 7页码:1712-1721 |
| 关键词 | Mechanical control of sand Sand depositions Surface radiation Heat flux Qinghai-Tibet Railway |
| ISSN号 | 2211-3797 |
| DOI | 10.1016/j.rinp.2017.05.005 |
| 通讯作者 | Xie, Shengbo(xieshengbo@lzb.ac.cn) |
| 英文摘要 | Mechanical control of drifting sand used to protect the Qinghai-Tibet Railway from sand damage inevitably results in sand deposition, and the change in radiation and heat flux after the ground surface is covered with sandy sediments remains unclear. These variations were studied in this work through field observations along with laboratory analyses and tests. After the ground surface was covered with sandy sediments produced by the mechanical control of sand in the Qinghai-Tibet Railway, the reflectivity increased, and the annual average reflectivity on the surface covered with sandy sediments was higher than that without sandy sediments, with the value increasing by 0.043. Moreover, the surface shortwave radiation increased, whereas the surface net radiation decreased. The annual average value of the surface shortwave radiant flux density on the sandy sediments was higher than that without sandy sediments, with the value increasing by 7.291W.m(-2). The annual average value of the surface net radiant flux density on the sandy sediments decreased by 9.639W.m(-2) compared with that without sandy sediments. The soil heat flux also decreased, and the annual average value of the heat flux in the sandy sediments decreased by 0.375W.m(-2) compared with that without sandy sediments. These variations caused the heat source on the surface of sandy sediments underground to decrease, which is beneficial for preventing permafrost from degradation in the section of sand control of the railway. (C) 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license |
| 收录类别 | SCI |
| WOS关键词 | UNCONFINED COMPRESSIVE STRENGTH ; FREEZE-THAW CYCLES ; BOTTOM ASH ; PERMAFROST REGIONS ; THERMAL-CONDUCTIVITY ; GROUND SURFACE ; SOIL ; PLATEAU ; DEGRADATION ; PREDICTION |
| WOS研究方向 | Materials Science ; Physics |
| WOS类目 | Materials Science, Multidisciplinary ; Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000417531500235 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558029 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Xie, Shengbo |
| 作者单位 | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China 2.Inner Mongolia Univ, Inst Transportat, Hohhot 010070, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xie, Shengbo,Qu, Jianjun,Mu, Yanhu,et al. Variation and significance of surface heat after the mechanical sand control of Qinghai-Tibet Railway was covered with sandy sediments[J]. RESULTS IN PHYSICS,2017,7:1712-1721. |
| APA | Xie, Shengbo,Qu, Jianjun,Mu, Yanhu,&Xu, Xiangtian.(2017).Variation and significance of surface heat after the mechanical sand control of Qinghai-Tibet Railway was covered with sandy sediments.RESULTS IN PHYSICS,7,1712-1721. |
| MLA | Xie, Shengbo,et al."Variation and significance of surface heat after the mechanical sand control of Qinghai-Tibet Railway was covered with sandy sediments".RESULTS IN PHYSICS 7(2017):1712-1721. |
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来源：寒区旱区环境与工程研究所
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