IMHE OpenIR  > 山地灾害与地表过程重点实验室
Comprehensive study of the Beijing Daanshan rockslide based on real-time videos, field investigations, and numerical modeling
Zhou, Shu1,2; Ouyang, Chaojun1,2,3; An, Huicong1,2; Jiang, Tianhai1; Xu, Qingsong1,2
Corresponding AuthorOuyang, Chaojun(cjouyang@imde.ac.cn)
2020-01-23
Source PublicationLANDSLIDES
ISSN1612-510X
EISSN1612-5118
Pages15
SubtypeArticle; Early Access
Contribution Rank1
AbstractThe depth-integrated model has been applied to the simulation of various kinds of earth surface flows. However, there are few studies that focus on the difference between the associated dynamic processes and the computational results. The recent Daanshan Village rockslide, recorded by 3 real-time videos from different view angles as well as pre-slide images and detailed field investigations, offers an opportunity to provide some new insights into this issue. In this paper, the failure mechanism and dynamic processes behind the Daanshan rockslide were analyzed in detail and simulation results obtained from depth-integrated modeling in both the vertical and rotated coordinate systems were compared with the videos and field investigations. The field investigations reveal that the rockslide was essentially controlled by the sedimentary unconformity interface and the interbedded black mudstone layers, and triggered by intense rainfall. The comparisons indicate that the simulated trimlines generally matched the real trimlines at each second, but at the initial stage, the simulated velocities are a little large. With respect to the final deposition area, the simulated runout distance and trimlines matched well with the field investigation results, and the accuracy estimated by the contact area percentage of the maximum impact area reached 91.46%. The simulation results obtained from the vertical and rotated coordinate systems show significant differences. The simulation accuracy of the rotated coordinate system was 91.46%, while for the vertical coordinate system it was 84.69%, demonstrating that the rotated coordinate system should be used, or the vertical acceleration should be modified to obtain credible results. This comprehensive analysis verified that the depth-integrated model can access both rockslide processes and the final deposition area. It is pointed out that the rotated coordinate system can obtain better results than the vertical coordinate system in areas with steep slopes, whereas the differences can be neglected when considering gentle slopes.
KeywordDynamic process Failure mechanisms MacCormack-TVD scheme Numerical modeling Rockslides
DOI10.1007/s10346-020-01345-2
Indexed BySCI
WOS Keyword2017 XINMO LANDSLIDE ; CATASTROPHIC ROCKSLIDE ; FAILURE-MECHANISM ; DEBRIS AVALANCHE ; DYNAMIC-ANALYSIS ; MAOXIAN ; SICHUAN ; VILLAGE ; COUNTY ; PHILIPPINES
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFC1501000] ; Strategic Priority Research Program of CAS[XDA23090303] ; NSFC[41572303] ; CAS Youth Innovation Promotion Association
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000508728900001
Funding OrganizationNational Key Research and Development Program of China ; Strategic Priority Research Program of CAS ; NSFC ; CAS Youth Innovation Promotion Association
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/33694
Collection山地灾害与地表过程重点实验室
Corresponding AuthorOuyang, Chaojun
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, 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
Zhou, Shu,Ouyang, Chaojun,An, Huicong,et al. Comprehensive study of the Beijing Daanshan rockslide based on real-time videos, field investigations, and numerical modeling[J]. LANDSLIDES,2020:15.
APA Zhou, Shu,Ouyang, Chaojun,An, Huicong,Jiang, Tianhai,&Xu, Qingsong.(2020).Comprehensive study of the Beijing Daanshan rockslide based on real-time videos, field investigations, and numerical modeling.LANDSLIDES,15.
MLA Zhou, Shu,et al."Comprehensive study of the Beijing Daanshan rockslide based on real-time videos, field investigations, and numerical modeling".LANDSLIDES (2020):15.
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