Comprehensive analysis and numerical simulation of a large debris flow in the Meilong catchment, China | |
An, Huicong2,3; Ouyang, Chaojun2,3; Wang, Fulei2,3; Xu, Qingsong2,3; Wang, Dongpo1; Yang, Weibin1; Fan, Tianzhen1 | |
刊名 | ENGINEERING GEOLOGY |
2022-03-05 | |
卷号 | 298页码:13 |
关键词 | Shallow landslide Debris flow Hazard chain Integrated numerical simulation Uncertainty analysis |
ISSN号 | 0013-7952 |
DOI | 10.1016/j.enggeo.2022.106546 |
英文摘要 | On June 17, 2020, a large debris flow occurred in the Meilong catchment following a short-duration, high -intensity rainstorm. The debris flow was initiated by two shallow landsides upstream of the catchment and had a volume of approximately 7.7 x 10(5 )m(3). It blocked the river and then induced flooding, causing significant losses to the local residents. In this study, through a combination of field observation, image interpretation, and laboratory experiments, the initiation mechanism, erosion depth along the main channel, and deposition area of this debris flow were comprehensively analyzed. A sequentially integrated numerical model considering the rainfall interception by vegetation, infiltration, and runoff process was developed. Considering the spatial variations in the climatic, hydrological, and geotechnical parameters, the entire process of debris flow initiation, motion, entrainment, and deposition was simulated. The computational outcomes matched well with the field observation results. A combination of the proposed integrated model and spatially varying parameters can be used to effectively describe the debris flow characteristics in the initiation and propagation stages and provide significant insights into the physical processes involved in such hazards. |
资助项目 | NSFC[42022054] ; Stra-tegic Priority Research Program of CAS[XDA23090303] ; Youth Innovation Promotion Association |
WOS关键词 | 3D GROUNDWATER MODEL ; SHALLOW LANDSLIDES ; RAINFALL ; SOIL ; INTERCEPTION ; PARAMETERS ; INITIATION |
WOS研究方向 | Engineering ; Geology |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000804596500002 |
资助机构 | NSFC ; Stra-tegic Priority Research Program of CAS ; Youth Innovation Promotion Association |
内容类型 | 期刊论文 |
源URL | [http://ir.imde.ac.cn/handle/131551/56678] |
专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
通讯作者 | Ouyang, Chaojun |
作者单位 | 1.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm IMHE, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China |
推荐引用方式 GB/T 7714 | An, Huicong,Ouyang, Chaojun,Wang, Fulei,et al. Comprehensive analysis and numerical simulation of a large debris flow in the Meilong catchment, China[J]. ENGINEERING GEOLOGY,2022,298:13. |
APA | An, Huicong.,Ouyang, Chaojun.,Wang, Fulei.,Xu, Qingsong.,Wang, Dongpo.,...&Fan, Tianzhen.(2022).Comprehensive analysis and numerical simulation of a large debris flow in the Meilong catchment, China.ENGINEERING GEOLOGY,298,13. |
MLA | An, Huicong,et al."Comprehensive analysis and numerical simulation of a large debris flow in the Meilong catchment, China".ENGINEERING GEOLOGY 298(2022):13. |
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