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DOI	10.1016/j.jhydrol.2021.126810
	A thermo-poro-mechanical model for catastrophic landslides under unsaturated conditions
	He, Chuan; Liu, Enlong; He, Siming; Wu, Yong; Yin, Xiao; Wang, Jinchang; Sun, Yongning
通讯作者	Liu, EL (通讯作者)，Sichuan Univ, Coll Water Resource & Hydropower, State Key Lab Hydraul & Nat River Engn, Chengdu 610065, Peoples R China.
发表日期	2021
ISSN	0022-1694
EISSN	1879-2707
卷号	601
英文摘要	Large landslides are one of the most menacing geological hazards in mountainous regions around the world due to their high-speed, large-scale characteristics. Up to now, the thermo-poro-mechanical coupling mechanism of catastrophic landslides under initial water-saturated conditions has been recognized by many scholars. Nevertheless, most slip zones of landslides are located in both the unsaturated and saturated zones and the unsaturated zone can account for a much larger portion when the groundwater level is relatively low. Typical examples of this situation include many loess landslides which have occurred in northwestern China. In this study, a unified quasi two-dimensional thermo-poro-mechanical model was proposed taking into account both the unsaturated and saturated zones in the slip band of landslides and an attempt was made to describe the complete movement process. Moreover, the Dongfeng loess landslide was chosen as a case study with an assumed triggering condition, and the model was validated by comparison between the simulation results and previous published work. A sensitivity analysis demonstrated that the frictional heating mechanism and the presence of a dry air phase in the slip band have clear impacts on the characteristics of the landslide. In particular, it was found that the soil-water characteristic curve and the initial degree of saturation are of significance.
关键词	BLOCK MODEL PERMEABILITY BEHAVIOR COLLAPSE STRESS SOILS
英文关键词	Unsaturated soil landslides; Thermo-poro-mechanical model; Numerical simulation
语种	英语
WOS研究方向	Engineering ; Geology ; Water Resources
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000695816300096
来源期刊	JOURNAL OF HYDROLOGY
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/254562
作者单位	[He, Chuan; Liu, Enlong; Yin, Xiao] Sichuan Univ, Coll Water Resource & Hydropower, State Key Lab Hydraul & Nat River Engn, Chengdu 610065, Peoples R China; [Liu, Enlong] Chinese Acad Sci, State Key Lab Frozen Soil Engn, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [He, Siming; Wu, Yong] Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China; [Wang, Jinchang; Sun, Yongning] China Railway Qinghai Tibet Grp Co, Xining 810000, Peoples R China
推荐引用方式 GB/T 7714	He, Chuan,Liu, Enlong,He, Siming,et al. A thermo-poro-mechanical model for catastrophic landslides under unsaturated conditions[J]. 中国科学院西北生态环境资源研究院,2021,601.
APA	He, Chuan.,Liu, Enlong.,He, Siming.,Wu, Yong.,Yin, Xiao.,...&Sun, Yongning.(2021).A thermo-poro-mechanical model for catastrophic landslides under unsaturated conditions.JOURNAL OF HYDROLOGY,601.
MLA	He, Chuan,et al."A thermo-poro-mechanical model for catastrophic landslides under unsaturated conditions".JOURNAL OF HYDROLOGY 601(2021).