Comprehensive analysis using multiple-integrated techniques on the failure mechanism and dynamic process of a long run-out landslide: Jichang landslide case
文献类型:期刊论文
作者 | Bao, Yiding2,8; Wang, Hong7; Su, Lijun5,6,8; Geng, Dajiang4; Yang, Liang3; Shao, Peng7; Li, Yuchao2; Du, Ni1 |
刊名 | NATURAL HAZARDS |
出版日期 | 2022-02-14 |
页码 | 19 |
ISSN号 | 0921-030X |
关键词 | Jichang landslide Failure mechanism Dynamic process Numerical simulation |
DOI | 10.1007/s11069-022-05261-7 |
英文摘要 | This study systematically investigates the failure mechanism and dynamic process of a long run-out landslide in Jichang town based on multiple-integrated geotechniques including field investigations, remote sensing analysis, electrical resistivity tomography (ERT) analysis, seismic signal analysis, and numerical simulations. Multi-period remote sensing images show that there was no deformation of the slope before failure that the landslide occurred suddenly, and that rainfall was the main triggering factor. The field investigations and the ERT analysis show that the bedrock of basalt below the Quaternary deposits is moderately strongly weathered and fractured and was full of water from the heavy rainfall that occurred before failure. In addition, field investigations and ERT results show that the geometry of the slip surface is stair-stepping, indicating that there was at least one locked segment on the potential failure path before failure. The authors conclude that the failure of the Jichang landslide was caused by fractured rock filled with rainwater that reduced the shear strength of the discontinuous planes and increased the pore water pressure and weight of the material; this caused the damage of the locked segments and triggered a sudden landslide. Seismic signal analysis shows that the entire run-out process lasted for 60 s and can be divided into three stages: the initial failure stage, the acceleration stage, and the deposition stage. The initial failure stage lasted for 20 s, the acceleration stage lasted for 15 s, and the deposition stage lasted for 25 s. The results of the landslide run-out simulation based on a 3D SPH model are consistent with the seismic signal analysis and show that the peak speed of the sliding mass reached up to 45 m/s. This study shows that the multiple-integrated geotechniques are very useful in run-out landslide investigation and can be used as a reference in similar future studies. |
WOS关键词 | SLOPE ; MODEL |
资助项目 | National Natural Science Foundation[41790432] ; China Postdoctoral Science Foundation[2020M683369] |
WOS研究方向 | Geology ; Meteorology & Atmospheric Sciences ; Water Resources |
语种 | 英语 |
出版者 | SPRINGER |
WOS记录号 | WOS:000754943200004 |
资助机构 | National Natural Science Foundation ; China Postdoctoral Science Foundation |
源URL | [http://ir.imde.ac.cn/handle/131551/56465] |
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 | Wang, Hong |
作者单位 | 1.DongChen Int Sch, Chengdu 621051, Peoples R China 2.Jilin Univ, Coll Construct Engn, Changchun 130026, Peoples R China 3.Guizhou Inst Geol Environm Monitoring, Guiyang 550081, Peoples R China 4.China Construct 4th Engn Bur 6th Corp Ltd, Shanghai 201100, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.CAS HEC, China Pakistan Joint Res Ctr Earth Sci, Islamabad, Pakistan 7.Guizhou Univ, Coll Civil Engn, Guiyang 550025, Peoples R China 8.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China |
推荐引用方式 GB/T 7714 | Bao, Yiding,Wang, Hong,Su, Lijun,et al. Comprehensive analysis using multiple-integrated techniques on the failure mechanism and dynamic process of a long run-out landslide: Jichang landslide case[J]. NATURAL HAZARDS,2022:19. |
APA | Bao, Yiding.,Wang, Hong.,Su, Lijun.,Geng, Dajiang.,Yang, Liang.,...&Du, Ni.(2022).Comprehensive analysis using multiple-integrated techniques on the failure mechanism and dynamic process of a long run-out landslide: Jichang landslide case.NATURAL HAZARDS,19. |
MLA | Bao, Yiding,et al."Comprehensive analysis using multiple-integrated techniques on the failure mechanism and dynamic process of a long run-out landslide: Jichang landslide case".NATURAL HAZARDS (2022):19. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
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