Influence of topography on the fragmentation and mobility of landslides
文献类型：期刊论文
| 作者 | Li, Zhaodong4; Guo, Jian1,5; Li, Tonglu2,4; Li, Ping2,4; Ma, Xuetong3; Zhang, Mengmeng2,4; Jia, Enxian2,4; Xu, Pingping2,4 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2025-02-01 |
| 卷号 | 84期号:2页码:73 |
| 关键词 | Landslide mobility Discrete element method Fragmentation degree Deposit characteristics |
| ISSN号 | 1435-9529 |
| DOI | 10.1007/s10064-025-04095-4 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | This study uses discrete element method models to simulate the fragmentation and deposition of landslides with varying volumes on terrains with different slopes and heights. The slope motion process during the numerical simulations of the landslide movement can be divided into three stages based on changes in the kinetic energy. The variations in the kinetic and frictional energies throughout the mass motion are used to establish pertinent parameters to analyze the dynamics of the slider fragmentation characteristics. Building on prior research, the impact of the slope on the mobility and deposit morphology, including the apparent and equivalent friction coefficients and the ratio of the width to length as a deposit morphology model, is examined using motion models. Concurrently, the three experimental variables (the slope gradient, slope height, and sliding block volume) are analyzed and discussed in conjunction with the motion and deposit morphology models. Previous studies indicate that the quantification of landslide fragmentation is only applicable to rock landslides and has limitations. In the numerical simulations, distinct contact models for pre- and post-fragment particles are defined to enumerate the total number of intact particles. Subsequently, a dimensionless parameter is formulated to quantify the degree of slope fragmentation. The relationship of this parameter with the motion and deposition models is subsequently explored. The results show that increased fragmentation reduces the landslide mobility, indicating that fragmentation is an energy-consumptive process that hinders landslide motion. These findings provide insights into the mechanisms of long-runout landslides and contribute to the reproduction of landslide dynamics. |
| URL标识 | 查看原文 |
| WOS关键词 | LONG-RUNOUT LANDSLIDES ; ROCK AVALANCHES ; MODEL ; FRICTION ; KINEMATICS ; REDUCTION ; ROCKFALLS ; MECHANISM ; INSIGHTS ; FAILURE |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001402590900001 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/211321]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Guo, Jian |
| 作者单位 | 1.Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China; 2.Minist Educ, Water Cycle & Geol Environm Observat & Res Stn Chi, Zhengning 745399, Peoples R China; 3.Northwest Elect Power Design Inst Ltd Co, China Power Engn Consulting Grp, Xian 710075, Peoples R China 4.Changan Univ, Sch Geol Engn & Geomat, Xian 710054, Shaanxi, Peoples R China; 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Li, Zhaodong,Guo, Jian,Li, Tonglu,et al. Influence of topography on the fragmentation and mobility of landslides[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2025,84(2):73. |
| APA | Li, Zhaodong.,Guo, Jian.,Li, Tonglu.,Li, Ping.,Ma, Xuetong.,...&Xu, Pingping.(2025).Influence of topography on the fragmentation and mobility of landslides.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,84(2),73. |
| MLA | Li, Zhaodong,et al."Influence of topography on the fragmentation and mobility of landslides".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 84.2(2025):73. |
入库方式： OAI收割
来源：地理科学与资源研究所
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