Evaluating the stability of Outang landslide in the Three Gorges Reservoir area considering the mechanical behavior with large deformation of the slip zone
文献类型：期刊论文
| 作者 | Yan, Junbiao1,4,5; Zou, Zongxing4,5; Mu, Rui4,5; Hu, Xinli3; Zhang, Jincheng2; Zhang, Wen2; Su, Aijun4,5; Wang, Jinge4,5; Luo, Tao4,5 |
| 刊名 | NATURAL HAZARDS
 |
| 出版日期 | 2022-02-21 |
| 页码 | 25 |
| 关键词 | Landslide evolution Slip zone soil Repeated direct shear test Constitutive model Shear mechanical behavior Large deformation |
| ISSN号 | 0921-030X |
| DOI | 10.1007/s11069-022-05276-0 |
| 英文摘要 | The large deformation mechanical properties of slip zone soil play an important role in the stability evolution of landslide. The traditional landslide stability evaluation method can only be used to calculate a single stability factor, which cannot dynamically evaluate the landslide stability as it evolves. The large deformation mechanical properties of slip zone soil from Outang landslide in the Three Gorges Reservoir area are investigated by the indoor repeated direct shear test. Based on the damage theory, the shear damage behavior of slip zone soil with large shear displacement is analyzed, and a mechanical model describing the relationship between shear stress and shear displacement in accordance with the mechanical mechanism of landslide is established. Then, the stability of Outang landslide is dynamically evaluated by skillfully combining the mechanical model and the residual thrust method. The results show that the slip zone soil has obvious softening behavior and constant residual strength under the condition of large deformation. The model with clear physical meaning can reflect the large displacement shear mechanical properties of slip zone soil, which is consistent with the test results. The stability factor of Outang landslide gradually decreases and tends to be constant as landslide moves. The mechanical mechanism of the landslide stability evolving with deformation is the strain softening behavior of the slip zone soil, and the mechanical mechanism of the landslide stability evolving with water level is the reduction of effective stress in anti-sliding section under the influence of reservoir water. It is suggested that active measures should be taken in time in the prevention and control of landslide, and the construction of drainage engineering should be paid attention to for large-scale bank landslides. |
| 资助项目 | National Natural Science Foundation of China[42020104006] ; National Natural Science Foundation of China[42077268] ; National Natural Science Foundation of China[42090055] ; Chongqing Geological Disaster Prevention and Control Center of China[20C0023] |
| WOS研究方向 | Geology ; Meteorology & Atmospheric Sciences ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000758125300002 |
| 出版者 | SPRINGER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34497]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zou, Zongxing |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Chongqing Geol Disaster Prevent Ctr, Chongqing 401147, Peoples R China 3.China Univ Geosci, Sch Engn, Wuhan 430074, Peoples R China 4.China Univ Geosci, Three Gorges Res Ctr Geohazards, Wuhan 430074, Peoples R China 5.China Univ Geosci, Badong Natl Observat & Res Stn Geohazards, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Junbiao,Zou, Zongxing,Mu, Rui,et al. Evaluating the stability of Outang landslide in the Three Gorges Reservoir area considering the mechanical behavior with large deformation of the slip zone[J]. NATURAL HAZARDS,2022:25. |
| APA | Yan, Junbiao.,Zou, Zongxing.,Mu, Rui.,Hu, Xinli.,Zhang, Jincheng.,...&Luo, Tao.(2022).Evaluating the stability of Outang landslide in the Three Gorges Reservoir area considering the mechanical behavior with large deformation of the slip zone.NATURAL HAZARDS,25. |
| MLA | Yan, Junbiao,et al."Evaluating the stability of Outang landslide in the Three Gorges Reservoir area considering the mechanical behavior with large deformation of the slip zone".NATURAL HAZARDS (2022):25. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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