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  2. 地质与地球物理研究所
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  4. 中国科学院页岩气与地质工程重点实验室
Effects of the attitude of dominant joints on the mobility of translational landslides

文献类型：期刊论文

作者Sun, Juanjuan2,3,4; Wang, Xueliang2,3,4; Liu, Haiyang2,3,4; Yuan, Honghu1
刊名LANDSLIDES
出版日期2021-04-22
页码16
关键词Mobility Translational landslide Attitude of the dominant joint Back-analysis Topographic constraints Depth-averaged model
ISSN号1612-510X
DOI10.1007/s10346-021-01668-8
英文摘要Geological structures and ground undulation affect the mobility of translational landslides. Combining field investigation, back-analysis, and numerical simulation, we explore the role of dominant joint dip angle in controlling the mobility of translational landslides. First, the attitudes of the geological structures are revealed by aerial photography measurements. The pre-failure slope surface of the Wolong landslide, Southeastern Tibetan Plateau, is estimated from the contours of the adjacent stable hillslopes and the deposit bottom boundary. Then, to back-analyze cohesion and internal fraction angle of the landslide, we fit a maximum stable relief limit based on Culmann's model to the upper envelope of 96 rock scars and 37 previously published landslides. Next, we design eight scenarios (S1-S8) for the simulation of landslide mobility, respectively, corresponding to the eight joint dip angles between 20 degrees and 60 degrees. The mobility index H/L increases with the dip angle beta, as confirmed by the best-fit line H/L = 0.288 ln(beta) - 0.698. The numerical results of the runout characteristics, velocity, and energy consumption of the simulated landslides in the eight scenarios indicate that (1) the momentum losses at slope break are closely related to the joint dip, apparent friction angle, and height of the mass center; (2) local undulations in substrate have an inapparent effect on mobility of large and long runout landslides; and (3) conventional mobility indexes need to be improved or modified when high mobile landslides encounter high obstacles at slope bottom, opposite hills, or mountains. This study will be useful for hazard evaluations of translational landslides in mountainous regions.
资助项目Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0904] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23090402] ; Strategic Priority Research Program of the Chinese Academy of Sciences[52199918000C] ; China Scholarship Council Foundation
WOS研究方向Engineering ; Geology
语种英语
WOS记录号WOS:000642055900001
出版者SPRINGER HEIDELBERG
资助机构Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; China Scholarship Council Foundation ; China Scholarship Council Foundation ; China Scholarship Council Foundation ; China Scholarship Council Foundation ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; China Scholarship Council Foundation ; China Scholarship Council Foundation ; China Scholarship Council Foundation ; China Scholarship Council Foundation ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; China Scholarship Council Foundation ; China Scholarship Council Foundation ; China Scholarship Council Foundation ; China Scholarship Council Foundation ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; China Scholarship Council Foundation ; China Scholarship Council Foundation ; China Scholarship Council Foundation ; China Scholarship Council Foundation
源URL[http://ir.iggcas.ac.cn/handle/132A11/101137]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Wang, Xueliang
作者单位1.Beijing Inst Water, Beijing 100048, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Juanjuan,Wang, Xueliang,Liu, Haiyang,et al. Effects of the attitude of dominant joints on the mobility of translational landslides[J]. LANDSLIDES,2021:16.
APA Sun, Juanjuan,Wang, Xueliang,Liu, Haiyang,&Yuan, Honghu.(2021).Effects of the attitude of dominant joints on the mobility of translational landslides.LANDSLIDES,16.
MLA Sun, Juanjuan,et al."Effects of the attitude of dominant joints on the mobility of translational landslides".LANDSLIDES (2021):16.

入库方式： OAI收割

来源：地质与地球物理研究所

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