The effect of topography on landslide kinematics: a case study of the Jichang town landslide in Guizhou, China
文献类型：期刊论文
| 作者 | Guo Jian2; Yi Shujian1,3; Yin Yanzhou1,3; Cui Yifei4; Qin Mingyue1,3; Li Tonglu2,5; Wang Chenyang4 |
| 刊名 | LANDSLIDES
 |
| 出版日期 | 2020-04-01 |
| 卷号 | 17期号:4页码:959-973 |
| ISSN号 | 1612-510X |
| 关键词 | Terrestrial Water Resources Satellite Soil moisture Airborne experiment L-band active and passive Luan River |
| DOI | 10.1007/s10346-019-01339-9 |
| 通讯作者 | Cui, Yifei(yifekui@mail.tsinghua.edu.cn) |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | On July 23, 2019, a large-scale landslide occurred in Jichang town, Shuicheng County, Liupanshui City, Guizhou Province in China. The landslide, which moved along two gullies, resulted in strong punching-shear, induced scarping on vegetation and large destruction of houses, and finally formed a deposit with a volume of 2 x 10(6) m(3). This research aims to understand the effect of topography on landslide kinematics. To achieve this aim, a detailed field investigation was first carried out with an unmanned aerial vehicle (UAV) aerial photography survey, resident interviews, and field sampling. The rainfall analysis indicates the effective rainfall within 7 days before landslides was 70.14 mm which exceeded the rainfall threshold of 54.3 mm in this region, which finally triggered the landslide. Traditional soil mechanic tests were then performed to identify the soil properties of the source material. Combined with numerical simulation using the nonlinear shallow water equation, the whole process of landslides was divided into four stages: instability stage, acceleration stage, transformation stage, and impact and accumulation stage. The simulations results show the landslide block slid with a low velocity of 8 m/s for about 100 m. Then, Froude number of landslide increases from 2 to 3 when passing the high and steep terrain, indicating that landslide change to inertial dominated with potential same Froude behavior of classic debris flow. The rupture mass slid with the peak velocity of 23 m/s and diverged in two gullies and ran out for about 600 m. The maximum velocity is 23 m/s in east gully while only 15 m/s in west gully. Compared with deep and incised valleys in the west, shallow and straight valley in the east decreases the deposit depth and further increases the velocity of landslide material with increased runout distance. This research may provide a fast flow path of back analyzing geo-hazards on complex terrain and serve as a basis for future research on long runout landslides. |
| 电子版国际标准刊号 | 1612-5118 |
| WOS关键词 | DEBRIS-FLOW ; DYNAMIC-ANALYSIS ; INITIATION ; SOIL ; MOVEMENT ; FAILURE |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | SPRINGER HEIDELBERG |
| WOS记录号 | WOS:000525619200014 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/34329]  |
| 专题 | 中国科学院水利部成都山地灾害与环境研究所 |
| 通讯作者 | Cui Yifei |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 2.Changan Univ, Dept Geol Engn, Xian 710064, Peoples R China; 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Hazards, Chengdu 610041, Peoples R China; 4.Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China; 5.Minist Educ, Water Cycle & Geol Environm Observat & Res Stn Ch, Zhengning 745399, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo Jian,Yi Shujian,Yin Yanzhou,et al. The effect of topography on landslide kinematics: a case study of the Jichang town landslide in Guizhou, China[J]. LANDSLIDES,2020,17(4):959-973. |
| APA | Guo Jian.,Yi Shujian.,Yin Yanzhou.,Cui Yifei.,Qin Mingyue.,...&Wang Chenyang.(2020).The effect of topography on landslide kinematics: a case study of the Jichang town landslide in Guizhou, China.LANDSLIDES,17(4),959-973. |
| MLA | Guo Jian,et al."The effect of topography on landslide kinematics: a case study of the Jichang town landslide in Guizhou, China".LANDSLIDES 17.4(2020):959-973. |
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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