Long-Term Use of Diatomite Slope Embankments in Warm Permafrost Regions
文献类型：期刊论文
| 作者 | Chen, Ji1,2; Feng, Ziliang1; Sheng, Yu1; Liu, Lei3; Li, Jing1 |
| 刊名 | JOURNAL OF COLD REGIONS ENGINEERING
 |
| 出版日期 | 2017-09-01 |
| 卷号 | 31期号:3页码:16 |
| 关键词 | Diatomite slope Thermal semiconductor Warm permafrost Permafrost table Mean annual ground temperature |
| ISSN号 | 0887-381X |
| DOI | 10.1061/(ASCE)CR.1943-5495.0000124 |
| 通讯作者 | Chen, Ji(chenji@lzb.ac.cn) |
| 英文摘要 | Diatomite is a highly porous media with significant water absorption and retention capacity. In order to investigate the long-term cooling effect of diatomite on a roadbed in a warm permafrost region, a diatomite embankment was constructed in 2003, on National Highway 214, Qinghai-Tibet Plateau. Field data revealed that surface temperature differences between embankments with and without diatomite varied from 0.3 to 1.8 degrees C. According to permafrost tables and mean annual ground temperatures, the thermal semiconductivity of a 0.4-m thick diatomite slope only impeded permafrost degradation, but did not offset the temperature rise associated with installing an asphalt pavement and embankment in warm permafrost regions. Further analysis indicated that the initial cooling effect of the diatomite slope was influenced by the construction season and watering treatment. Additionally, maintenance and climatic conditions were important for the long-term thermal performance of the diatomite embankment. The results show that diatomite slopes should be considered in humid climates with high levels of autumn rainfall, and should ideally be constructed at the end of winter. |
| 收录类别 | SCI |
| WOS研究方向 | Engineering ; Geology |
| WOS类目 | Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000400524600003 |
| 出版者 | ASCE-AMER SOC CIVIL ENGINEERS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557711 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Chen, Ji |
| 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, Beiluhe Observat Stn Frozen Soil Environm & Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China 3.Qinghai Res Inst Transportat Sci & Technol, Xining 810000, Qinghai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Ji,Feng, Ziliang,Sheng, Yu,et al. Long-Term Use of Diatomite Slope Embankments in Warm Permafrost Regions[J]. JOURNAL OF COLD REGIONS ENGINEERING,2017,31(3):16. |
| APA | Chen, Ji,Feng, Ziliang,Sheng, Yu,Liu, Lei,&Li, Jing.(2017).Long-Term Use of Diatomite Slope Embankments in Warm Permafrost Regions.JOURNAL OF COLD REGIONS ENGINEERING,31(3),16. |
| MLA | Chen, Ji,et al."Long-Term Use of Diatomite Slope Embankments in Warm Permafrost Regions".JOURNAL OF COLD REGIONS ENGINEERING 31.3(2017):16. |
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来源：寒区旱区环境与工程研究所
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