气候变化领域集成服务门户(CCPortal): Method for Unloading Zonation Based on Strain per Unit Crack: Case Study of a Large-Scale Rocky Slope on the Qinghai-Tibet Plateau

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DOI	10.3390/su15043861
	Method for Unloading Zonation Based on Strain per Unit Crack: Case Study of a Large-Scale Rocky Slope on the Qinghai-Tibet Plateau
	Xu, Zhengxuan; Chen, Guoqing; Sun, Xiang; Yang, Xin; Lin, Zhiheng
发表日期	2023
EISSN	2071-1050
卷号	15 期号:4
英文摘要	Distribution of unloading zones determines stability of slopes, and the unloading of a large-scale rocky slope formed by rapid river erosion and surface uplift on the Qinghai-Tibet Plateau is particularly severe. Generally, unloading assessment relies on traditional methods, which are mainly related to phenomena. However, unloading is a process of deformation and failure regarding the rock mass. Based on deformation and failure, strain rate and crack rate established through theoretical analysis can measure the relationship between accumulative width of open cracks and unloading deformation and the relationship between accumulative number of cracks and unloading failure, respectively. Thus, a method that combines strain rate and crack rate, namely strain per unit crack (i.e., SPUC), is proposed. The SPUC was applied to assess the unloading zones of a large-scale rocky slope on the Qinghai-Tibet Plateau. The results show that the SPUC curve regularly varied and can be easily divided into three parts. Strong and weak unloading zones can be recognized from the SPUC curve. The reasonability of SPUC in the unloading zones assessment was confirmed by comparing and verifying with traditional methods. We found that SPUC has good universality and can compensate for the defect of using strain rate or crack rate to assess unloading zones.
关键词	unloading zonation large-scale rocky slope Qinghai-Tibet Plateau strain per unit crack
英文关键词	EXCAVATION DAMAGED ZONE; BANK SLOPE; LANDSLIDE; PERMEABILITY; MECHANISM; MODEL; RIVER
WOS研究方向	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS记录号	WOS:000940016500001
来源期刊	SUSTAINABILITY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282795
作者单位	Southwest Jiaotong University; Chengdu University of Technology
推荐引用方式 GB/T 7714	Xu, Zhengxuan,Chen, Guoqing,Sun, Xiang,et al. Method for Unloading Zonation Based on Strain per Unit Crack: Case Study of a Large-Scale Rocky Slope on the Qinghai-Tibet Plateau[J],2023,15(4).
APA	Xu, Zhengxuan,Chen, Guoqing,Sun, Xiang,Yang, Xin,&Lin, Zhiheng.(2023).Method for Unloading Zonation Based on Strain per Unit Crack: Case Study of a Large-Scale Rocky Slope on the Qinghai-Tibet Plateau.SUSTAINABILITY,15(4).
MLA	Xu, Zhengxuan,et al."Method for Unloading Zonation Based on Strain per Unit Crack: Case Study of a Large-Scale Rocky Slope on the Qinghai-Tibet Plateau".SUSTAINABILITY 15.4(2023).