干旱区生态环境知识资源中心(Arid): Destabilization Mechanism and Stability Study of Collapsible Loess Canal Slopes in Cold and Arid Regions

Arid

DOI	10.3390/app14114518
	Destabilization Mechanism and Stability Study of Collapsible Loess Canal Slopes in Cold and Arid Regions
	Xu, Haozhen; Zhang, Lingkai; Shi, Chong
通讯作者	Zhang, LK
来源期刊	APPLIED SCIENCES-BASEL
EISSN	2076-3417
出版年	2024
卷号	14 期号:11
英文摘要	The combination of seasonal shutdowns, water conveyance, cold, and drought can easily lead to the deterioration of the anti-seepage system and loess foundation of the canal, which contributes to the destruction of the slope. To reveal the failure mechanism of the collapsible loess canal slope, this paper is based on the results of laboratory tests and adopts numerical simulations to analyze the stability of the canal slope under different conditions. The results show that the shear strength indexes and elastic modulus E of loess decrease following an exponential pattern with the increase in wetting-drying and freezing-thawing (WD-FT) cycles. The height of the seepage overflow point yields little effect on the water level behind the impermeable membrane, whereas the height of the water level has a significant effect. In the operation period, the slope under any working conditions is in a relatively stable state. However, the slope with a water level of 4.5 m behind the impermeable membrane tends to be unstable after three WD-FT cycles during the shutdown period. By replacing the surface-degraded loess with sand gravel and picking a depth of 0.9-1.2 m, the slope will maintain a long-term stable state.
英文关键词	cold and arid regions collapsible loess water conveyance canal sliding failure stability analysis
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001245422100001
WOS关键词	FAILURE ; CHINA
WOS类目	Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/402875
推荐引用方式 GB/T 7714	Xu, Haozhen,Zhang, Lingkai,Shi, Chong. Destabilization Mechanism and Stability Study of Collapsible Loess Canal Slopes in Cold and Arid Regions[J],2024,14(11).
APA	Xu, Haozhen,Zhang, Lingkai,&Shi, Chong.(2024).Destabilization Mechanism and Stability Study of Collapsible Loess Canal Slopes in Cold and Arid Regions.APPLIED SCIENCES-BASEL,14(11).
MLA	Xu, Haozhen,et al."Destabilization Mechanism and Stability Study of Collapsible Loess Canal Slopes in Cold and Arid Regions".APPLIED SCIENCES-BASEL 14.11(2024).