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  4. 中国科学院页岩气与地质工程重点实验室
High mobility of the channelized ancient Linka rock avalanche within the Bangong - Nujiang suture zone, SE Tibetan Plateau

文献类型：期刊论文

作者Zeng, Qingli1,4; Zhu, Jiewang3; Liao, Liye1; Wei, Rongqiang1; Ma, Fengshan2; Ma, Xuping1; Yuan, Bo3
刊名ENGINEERING GEOLOGY
出版日期2021-03-05
卷号282页码:17
关键词Slope buckling failure Inverse remnant stratigraphy Superelevation Rock fragmentation Basal shear zone
ISSN号0013-7952
DOI10.1016/j.enggeo.2021.105999
英文摘要Large rock avalanches often result in loss of life and catastrophic damage to infrastructure far from their initial failure positions, predominantly due to their tremendous volumes, high velocities and long runouts. Studies of the surface morphologies and internal structures of rock avalanche deposits can reveal evidence of their movement and deposition mechanisms. Through field survey, satellite image interpretation and particle-size distribution analysis, we studied the ancient, long-runout Linka rock avalanche, which is next to the Nujiang River, southeast Tibetan Plateau. The Linka rock avalanche, with a source volume of similar to 310 Mm(3) originated from a high, steep dip slope and then transformed into a channelized rock avalanche, showing high mobility with a superelevation back-calculated maximal velocity of 42 m/s, a travel distance of similar to 6200 m and a Fahrboschung of 0.24. The slope failure sequence consisted of an initial failure of an outer limestone slab and a second failure of an inner sandstone slab. The limestone avalanche had 2 or 3 surges, while the sandstone avalanche probably had only one surge. The high mobility of the Linka rock avalanche predominantly resulted from a buckling failure occurred on a high relief source, low-energy dissipation during the channelized flow, intensive rock fragmentation in the basal facies and possible water lubrication when propagating bi-directionally along the Waqu River. Our findings for the Linka rock avalanche support previous knowledge that multiple mechanisms have different roles at different stages in a long runout rock avalanche.
资助项目National Natural Science Foundation of China[41772382] ; National Natural Science Foundation of China[42071020] ; Second Tibetan Plateau Scientific Expedition and Research[2019QZKK0904] ; National Key Research and Development Program of China[2019YFC1509703]
WOS研究方向Engineering ; Geology
语种英语
WOS记录号WOS:000621883800010
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research ; Second Tibetan Plateau Scientific Expedition and Research ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research ; Second Tibetan Plateau Scientific Expedition and Research ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research ; Second Tibetan Plateau Scientific Expedition and Research ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research ; Second Tibetan Plateau Scientific Expedition and Research ; National Key Research and Development Program of China ; National Key Research and Development Program of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/101000]  
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Zeng, Qingli
作者单位1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.Shandong Jianzhu Univ, Sch Civil Engn, Jinan 250101, Shandong, Peoples R China
4.Chinese Acad Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zeng, Qingli,Zhu, Jiewang,Liao, Liye,et al. High mobility of the channelized ancient Linka rock avalanche within the Bangong - Nujiang suture zone, SE Tibetan Plateau[J]. ENGINEERING GEOLOGY,2021,282:17.
APA Zeng, Qingli.,Zhu, Jiewang.,Liao, Liye.,Wei, Rongqiang.,Ma, Fengshan.,...&Yuan, Bo.(2021).High mobility of the channelized ancient Linka rock avalanche within the Bangong - Nujiang suture zone, SE Tibetan Plateau.ENGINEERING GEOLOGY,282,17.
MLA Zeng, Qingli,et al."High mobility of the channelized ancient Linka rock avalanche within the Bangong - Nujiang suture zone, SE Tibetan Plateau".ENGINEERING GEOLOGY 282(2021):17.

入库方式： OAI收割

来源：地质与地球物理研究所

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