气候变化领域集成服务门户(CCPortal): Heat transfer characteristics of gravelly soils with different compactness during unidirectional freezing process

CCPortal

DOI	10.1007/s00231-021-03022-z
	Heat transfer characteristics of gravelly soils with different compactness during unidirectional freezing process
	Zhang, Zhenyu; Yu, Qihao; Wang, Jinguo; Yue, Pan; Liu, Enlong; Wang, Xinbin
通讯作者	Yu, QH (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0947-7411
EISSN	1432-1181
起始页码	1161
结束页码	1170
卷号	57 期号:7
英文摘要	During the construction of clay core rockfill dam in cold regions in winter, the heat transfer characteristics of gravelly soil are important to the anti-freezing control of the core. Laboratory experiment and field test data showed that the frost depth of gravelly soil in unconsolidated state was deeper than that in compacted state at the early period of soil freezing. With the increase of the freezing time, however, the frost depth of compacted soil is deeper than that of unconsolidated soil. Further study showed that this phenomenon was main caused by the change of thermophysical parameters between unconsolidated and compacted soil. Under the same soil temperature, the thermal conductivity of compacted soil was approximately 2.6 times of that of unconsolidated soil, and the volume heat capacity and phase change latent heat of compacted soil was approximately 1.7 times of that of unconsolidated soil. The different thermophysical parameters caused the differences of the heat transfer rate, temperature distribution and heat release by cooling between compacted soil and unconsolidated soil. This study provides a theoretical guidance for freezing process of soil with different compactness and anti-freezing technology of clay core rockfill dam in cold regions.
英文关键词	Compactness; Unidirectional freezing; Cooling process; Heat transfer characteristics
语种	英语
WOS研究方向	Thermodynamics ; Mechanics
WOS类目	Thermodynamics ; Mechanics
WOS记录号	WOS:000609040500001
来源期刊	HEAT AND MASS TRANSFER
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254165
作者单位	[Zhang, Zhenyu; Yu, Qihao; Liu, Enlong; Wang, Xinbin] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Zhang, Zhenyu] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Wang, Jinguo; Yue, Pan] Yalong River Hydropower Dev Co Ltd, Chengdu 610065, Sichuan, Peoples R China; [Liu, Enlong] Sichuan Univ, Coll Water Resources & Hydropower, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhenyu,Yu, Qihao,Wang, Jinguo,et al. Heat transfer characteristics of gravelly soils with different compactness during unidirectional freezing process[J]. 中国科学院西北生态环境资源研究院,2021,57(7).
APA	Zhang, Zhenyu,Yu, Qihao,Wang, Jinguo,Yue, Pan,Liu, Enlong,&Wang, Xinbin.(2021).Heat transfer characteristics of gravelly soils with different compactness during unidirectional freezing process.HEAT AND MASS TRANSFER,57(7).
MLA	Zhang, Zhenyu,et al."Heat transfer characteristics of gravelly soils with different compactness during unidirectional freezing process".HEAT AND MASS TRANSFER 57.7(2021).