Analysis on Cooling Effect of Embankment with Crushed Rock and Gravel Revetment along Qinghai-Tibet Railway

doi:10.3969/j.issn.1001-8360.2022.05.017

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Analysis on Cooling Effect of Embankment with Crushed Rock and Gravel Revetment along Qinghai-Tibet Railway
	Zhao, Hongting 1,2; Wu, Qingbai 1; Hou, Yandong 3; Jiang, Guanli 1; Gao, Siru 1; Wang, Luyang 1,2
刊名	Tiedao Xuebao/Journal of the China Railway Society
	2022-05-15
卷号	44 期号:5 页码:132-140
关键词	Embankments Permafrost Railroads Rocks Temperature distribution Active cooling Closed systems Cooling effects Crushed rock Crushed rock and gravel revetment Crushed rock revetment Ground temperature Permafrost table Qinghai-Tibet Railway Variation of permafrost table
ISSN号	1001-8360
DOI	10.3969/j.issn.1001-8360.2022.05.017
英文摘要	Crushed rock and gravel embankmentsare common types of active cooling roadbed in Qinghai-Tibet railway. To verify the effectiveness of the engineering measures, it is necessary to research their long-term cooling effects.Based on the 10-year monitoring data of ground temperature in the Beiluhe experimental sections along the Qinghai-Tibet Railway, a comparison and analysis were made on the cooling effects of different crushed rock structures, including closed-system crushed rock revetment, open-system crushed rock revetment and open-system crushed gravel revetment, on the permafrost below the embankment. The results show that the embankment with the above three types of crushed rock revetments indicates a three-staged cooling process under the effect of engineering actives and warning climate, including rapid cooling, stable cooling and reduced cooling, with the open-system crushed gravel revetment performing the best. In this process, the cooling rates near the original permafrost table are respectively 0.39, 0.45, and 0.47 /10 a, in terms of the permafrost temperature variation and thermal regime. Compared with the closed-system crushed rock revetment, the soil temperature distributions beneath the open-system crushed rock revetment and open-system gravel rubble revetment perform a better symmetry.However, the aforementioned embankments have a cooling effect on underlying soil in the depth range of about 5.0 m, which is difficult to ensure the stability of deep permafrost. © 2022, Department of Journal of the China Railway Society. All right reserved.
语种	中文
出版者	Science Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158381]
专题	土木工程学院
作者单位	1.State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou; 730000, China; 2.University of Chinese Academy of Sciences, Beijing; 100049, China; 3.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Zhao, Hongting,Wu, Qingbai,Hou, Yandong,et al. Analysis on Cooling Effect of Embankment with Crushed Rock and Gravel Revetment along Qinghai-Tibet Railway[J]. Tiedao Xuebao/Journal of the China Railway Society,2022,44(5):132-140.
APA	Zhao, Hongting,Wu, Qingbai,Hou, Yandong,Jiang, Guanli,Gao, Siru,&Wang, Luyang.(2022).Analysis on Cooling Effect of Embankment with Crushed Rock and Gravel Revetment along Qinghai-Tibet Railway.Tiedao Xuebao/Journal of the China Railway Society,44(5),132-140.
MLA	Zhao, Hongting,et al."Analysis on Cooling Effect of Embankment with Crushed Rock and Gravel Revetment along Qinghai-Tibet Railway".Tiedao Xuebao/Journal of the China Railway Society 44.5(2022):132-140.