IMHE OpenIR  > 山地灾害与地表过程重点实验室
An Experimental Study on the Hydromechanical Behaviours of the Evolution of Postearthquake Landslide Deposits
Cai, Huan1,2; Yang, Zong-Ji1; Wang, Li-Yong1,2; Lei, Xiao-Qin1; Fu, Xiao-Long1,2; Liu, Shi-Hao1,2; Qiao, Jian-Ping1
Corresponding AuthorYang, Zong-Ji(yzj@imde.ac.cn)
2019
Source PublicationGEOFLUIDS
ISSN1468-8115
Pages18
AbstractIn this study, a series of experiments of the full-scale physical model was employed to investigate the hydromechanical behaviours of the postearthquake landslide evolution, in forms of rill erosion and shallow headward failure on the rill bank slopes under unsaturated conditions. Soil-water characteristic curves (SWCC) were established using the Brooks-Corey (BC) and van Genuchten (VG) models. The stability of the shallow failure was then analyzed via a one-dimensional and unsaturated stability analysis model of the infinite slope. This measurement revealed that the preferential flow and the matrix flow coexisted when infiltration occurred and the VG model performs better in fitting the SWCC than the BC model. Consistent feedback between stability calculations and experimental observations enables the analysis of mechanisms of rill erosion and slope failure of postseismic landslide under the impact of preferential flow. Furthermore, the seepage-induced internal erosion phenomenon was observed in the experiment. This work thus provides a new perspective on the triggering mechanisms of debris flow during the postseismic period.
DOI10.1155/2019/3032494
Indexed BySCI
WOS KeywordRAINFALL-INDUCED LANDSLIDES ; SLOPE STABILITY ANALYSIS ; 2008 WENCHUAN EARTHQUAKE ; INDUCED FINES MIGRATION ; FLOW ; INFILTRATION ; MODEL ; INSTABILITY ; FLOWSLIDES ; MECHANISMS
Language英语
Funding ProjectNational Natural Science Foundation of China[41771021] ; National Natural Science Foundation of China[41471012] ; 135 Strategic Program of the Institute of Mountain Hazards and Environment[SDS-135-1701] ; 135 Strategic Program of the Institute of Mountain Hazards and Environment[SDS-135-1704]
WOS Research AreaGeochemistry & Geophysics ; Geology
WOS SubjectGeochemistry & Geophysics ; Geology
WOS IDWOS:000475589800001
Funding OrganizationNational Natural Science Foundation of China ; 135 Strategic Program of the Institute of Mountain Hazards and Environment
PublisherWILEY-HINDAWI
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Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/26783
Collection山地灾害与地表过程重点实验室
Corresponding AuthorYang, Zong-Ji
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Cai, Huan,Yang, Zong-Ji,Wang, Li-Yong,et al. An Experimental Study on the Hydromechanical Behaviours of the Evolution of Postearthquake Landslide Deposits[J]. GEOFLUIDS,2019:18.
APA Cai, Huan.,Yang, Zong-Ji.,Wang, Li-Yong.,Lei, Xiao-Qin.,Fu, Xiao-Long.,...&Qiao, Jian-Ping.(2019).An Experimental Study on the Hydromechanical Behaviours of the Evolution of Postearthquake Landslide Deposits.GEOFLUIDS,18.
MLA Cai, Huan,et al."An Experimental Study on the Hydromechanical Behaviours of the Evolution of Postearthquake Landslide Deposits".GEOFLUIDS (2019):18.
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