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DOI	10.1016/j.enggeo.2023.107029
	Method for analyzing the evolution characteristics of in-situ stress field considering rheology and degradation: A deeply incised valley in Qinghai-Tibet Plateau, case study
	Sun, Xiang; Chen, Guoqing; Huang, Minyao; Zhang, Shishu; Yang, Jingxi; Ma, Jin'gen
发表日期	2023
ISSN	0013-7952
EISSN	1872-6917
卷号	315
英文摘要	The in-situ stress field in deeply incised valleys is an important factor to be considered in major construction projects on the Qinghai-Tibet Plateau. The resulting in-situ stress has a complex distribution and large magnitude due to rapid river erosion. Considering that the few actual measured in-situ stress values are insufficient to meet the needs of understanding the regional in-situ stress field and its evolution, this research proposes a method, the Svisc model, to study the distribution and evolution characteristics of the in-situ stress field and applies it to a case study of the Jinping-I Hydropower Station. The results show that the Svisc model, which considers the rheological and degradation properties of the rock mass, applies strength parameters that change from peak to residual values rather than remaining constant with rock mass degradation during the downcutting process of valleys. The stress adjustment depth obtained is deeper, and the current in-situ stress field values are higher overall according to the Svisc model. This model is more effective than conventional methods to simulate the long-term evolution of valleys.
关键词	In -situ stress field Long-term evolution characteristics Rheological properties Degradation properties Deeply incised valley
英文关键词	DAMAGE MODEL; TRANSIENT CREEP; RIVER VALLEY; BOREHOLE; BEHAVIOR; DEFORMATION; FAILURE; SLOPE; MECHANISMS; PARAMETERS
WOS研究方向	Engineering, Geological ; Geosciences, Multidisciplinary
WOS记录号	WOS:000947784600001
来源期刊	ENGINEERING GEOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283301
作者单位	Chengdu University of Technology
推荐引用方式 GB/T 7714	Sun, Xiang,Chen, Guoqing,Huang, Minyao,et al. Method for analyzing the evolution characteristics of in-situ stress field considering rheology and degradation: A deeply incised valley in Qinghai-Tibet Plateau, case study[J],2023,315.
APA	Sun, Xiang,Chen, Guoqing,Huang, Minyao,Zhang, Shishu,Yang, Jingxi,&Ma, Jin'gen.(2023).Method for analyzing the evolution characteristics of in-situ stress field considering rheology and degradation: A deeply incised valley in Qinghai-Tibet Plateau, case study.ENGINEERING GEOLOGY,315.
MLA	Sun, Xiang,et al."Method for analyzing the evolution characteristics of in-situ stress field considering rheology and degradation: A deeply incised valley in Qinghai-Tibet Plateau, case study".ENGINEERING GEOLOGY 315(2023).