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Dynamic process of a typical slope debris flow: a case study of the wujia gully, Zengda, Sichuan Province, China

文献类型：期刊论文

作者Yao Shunyu3,5,6; Bazai, Nazir Ahmed4,7; Tang Jinbo7; Jiang Hu1,7; Yi Shujian6,7; Zou Qiang6,7; Ahmed, Tashfain8; Guo Jian2
刊名NATURAL HAZARDS
出版日期2022-01-09
页码22
关键词Slope failure Topography Shallow water equation Debris flow movement
ISSN号0921-030X
DOI10.1007/s11069-021-05194-7
通讯作者Bazai, Nazir Ahmed(nazirbazai61@yahoo.com)
英文摘要On July 25, 2020, a debris flow occurred in the Wujia Gully, Sichuan Province, China. The last debris flow in this gully occurred 70 years ago and severely impacted the area downstream. The primary goal of this study was to analyze the impact of the topography on the movement process of the debris flow. To gain a precise understanding, a dataset was compiled, including metrological data, field data, accounts from locals, field sampling to obtain specific information using Unmanned Aerial Vehicle (UAV) photography, and the rheological properties of the debris flow slurry obtained through soil mechanics and rheological experiments. The movement process of the debris flow was simulated using the depth-integrated continuum approach. Based on numerical simulation analysis, the influence of the Wujia gully's topography on the debris flow's dynamic process was examined. It was found that the debris flow in the Wujia Gully was a typical viscous debris flow, and the debris flow slurry had the properties of a Bingham fluid. The dynamic process of the debris flow was divided into four stages: an acceleration stage, a deceleration stage in the channel, a smooth movement stage, and a slow accumulation stage. The topography was the main factor controlling the formation of the four stages of the dynamic process. Furthermore, Manning's resistance coefficient did not change the debris flow's dynamic process, but it significantly affected the velocity and duration of each stage. The results of this study provide a reference for future research on debris flow kinematics and flow channels of typical slope debris flows and their movement processes.
WOS关键词WENCHUAN EARTHQUAKE ; GLACIAL TILL ; LANDSLIDE ; ZHOUQU ; TIBET ; RIVER ; MECHANISMS ; SIMULATION ; RAINFALL ; DISASTER
资助项目Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-DQC006] ; National Natural Science Foundation of China[U20A20112] ; Sichuan Province Science and Technology Support Program[2021YFH0009] ; Major Program of the National Natural Science Foundation of China[41790432] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23090303]
WOS研究方向Geology ; Meteorology & Atmospheric Sciences ; Water Resources
语种英语
WOS记录号WOS:000740627000001
出版者SPRINGER
资助机构Key Research Program of Frontier Sciences, CAS ; National Natural Science Foundation of China ; Sichuan Province Science and Technology Support Program ; Major Program of the National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/169537]  
专题中国科学院地理科学与资源研究所
通讯作者Bazai, Nazir Ahmed
作者单位1.Southwest Univ Sci & Technol, Sch Environm & Resource, Mianyang 621010, Sichuan, Peoples R China
2.Changan Univ, Dept Geol Engn, Xian 710064, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
4.CAS HEC, China Pakistan Joint Res Ctr Earth Sci, Islamabad 45320, Pakistan
5.Chinese Acad Sci, Key Lab Land Surface Syst & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
6.Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China
7.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
8.Balochistan Univ Informat Technol Engn & Manageme, Fac Informat Commun Technol, Dept Comp Sci, Quetta, Pakistan
推荐引用方式
GB/T 7714		 Yao Shunyu,Bazai, Nazir Ahmed,Tang Jinbo,et al. Dynamic process of a typical slope debris flow: a case study of the wujia gully, Zengda, Sichuan Province, China[J]. NATURAL HAZARDS,2022:22.
APA Yao Shunyu.,Bazai, Nazir Ahmed.,Tang Jinbo.,Jiang Hu.,Yi Shujian.,...&Guo Jian.(2022).Dynamic process of a typical slope debris flow: a case study of the wujia gully, Zengda, Sichuan Province, China.NATURAL HAZARDS,22.
MLA Yao Shunyu,et al."Dynamic process of a typical slope debris flow: a case study of the wujia gully, Zengda, Sichuan Province, China".NATURAL HAZARDS (2022):22.

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来源：地理科学与资源研究所

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