气候变化领域集成服务门户(CCPortal): Experimental Study on the Influence of Increased Summer Rainfall on the Hydrothermal Process within the Highway Embankments in Permafrost Regions

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DOI	10.1061/JCRGEI.CRENG-766
	Experimental Study on the Influence of Increased Summer Rainfall on the Hydrothermal Process within the Highway Embankments in Permafrost Regions
	Zhang, Mingli; Zhou, Zhixiong; Zhou, Fengxi; Li, Desheng; Feng, Wei; Lei, Bingbing; Ma, Anjing
发表日期	2024
ISSN	0887-381X
EISSN	1943-5495
起始页码	38
结束页码	2
卷号	38 期号:2
英文摘要	The Qinghai-Tibet Plateau shows an obvious trend of warming and humidification, and the increased rainfall is mainly concentrated in the summer. There have been few reports on the effects of summer rainfall variations on the hydrothermal states of embankments in permafrost regions. Therefore, based on an indoor embankment-scale model experiment, the effects of increased summer rainfall on the surface energy, temperature, and water fields of highway embankments in permafrost regions were investigated. The results showed that increased summer rainfall led to an increase in surface net radiation. However, the increase in summer rainfall led to a decreasing trend in the pavement temperature and shallow heat flux of the embankment, indicating that increased summer rainfall could effectively inhibit the increase in pavement temperature. Simultaneously, the increased summer rainfall also increased the shallow water content at different locations of the embankment in the following order: natural site > shoulder > slope > pavement. The maximum increase in water content at the natural site was 6.7% after a twofold increase in the summer rainfall. In addition, the temperature within the embankment exhibited a decreasing trend with an increase in summer rainfall. Compared to other parts of the embankment, although the increased summer rainfall led to a relatively small increase in water content in the lower part of the pavement, the asphalt concrete pavement had a higher temperature. Therefore, when rainfall acts as an energy cold pulse on the pavement, the temperature of the lower part of the pavement decreases more significantly than that of the other parts of the embankment. The increased summer rainfall affected the cooling range of different parts of the embankment in the following order: pavement > natural site > shoulder > slope. The increase in summer rainfall had a hysteresis effect that affected the water and temperature fields within the embankment in autumn.
英文关键词	Permafrost region; Highway embankment; Hydrothermal process; Summer rainfall; Model experiment
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS记录号	WOS:001202618500002
来源期刊	JOURNAL OF COLD REGIONS ENGINEERING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/303600
作者单位	Lanzhou University of Technology; Nanjing University of Science & Technology
推荐引用方式 GB/T 7714	Zhang, Mingli,Zhou, Zhixiong,Zhou, Fengxi,et al. Experimental Study on the Influence of Increased Summer Rainfall on the Hydrothermal Process within the Highway Embankments in Permafrost Regions[J],2024,38(2).
APA	Zhang, Mingli.,Zhou, Zhixiong.,Zhou, Fengxi.,Li, Desheng.,Feng, Wei.,...&Ma, Anjing.(2024).Experimental Study on the Influence of Increased Summer Rainfall on the Hydrothermal Process within the Highway Embankments in Permafrost Regions.JOURNAL OF COLD REGIONS ENGINEERING,38(2).
MLA	Zhang, Mingli,et al."Experimental Study on the Influence of Increased Summer Rainfall on the Hydrothermal Process within the Highway Embankments in Permafrost Regions".JOURNAL OF COLD REGIONS ENGINEERING 38.2(2024).