DOI: 10.1007/s11069-021-04558-3
论文题名: Dynamic hazard assessment of group-occurring debris flows based on a coupled model
作者: Nie Y. ; Li X. ; Zhou W. ; Xu R.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 106, 期: 3 起始页码: 2635
结束页码: 2661
语种: 英语
中文关键词: Coupled model
; Dynamic hazard assessment
; Flow-R model
; Group-occurring debris flows
; TRIGRS model
英文关键词: debris flow
; flow modeling
; gravity field
; hazard assessment
; mountain region
; rainfall
; China
; Qingping
; Sichuan
英文摘要: A scientific hazard zoning of debris flows can ensure that human activities are not performed therein, thereby reducing economic loss as much as possible. In this study, by considering the formation background conditions of mountain hazards and dynamic rainfall conditions, the Transient Rainfall Infiltration and Grid-Based Regional Slope-Stability Model (TRIGRS) and Flow path assessment of gravitational hazards at a Regional scale (Flow-R) are organically combined to establish a new coupled model for debris flow dynamic hazard assessment from the viewpoint of landslides providing the material source of debris flows. The coupled model was employed in Qingping township, Sichuan province of China, which was severely damaged by the “5·12” Wenchuan earthquake in 2008. Evaluation results show that the accuracy of the coupled model is 87.98%, which is significantly higher than that of the static Flow-R model (75.51%). This study not only considers the effect of the formation condition of mountain hazards and rainfall-induced shallow landslides on the source of debris flows, but also realises real-time hazard assessment and prediction of group-occurring debris flows. The coupled model used in this study provides a new perspective and is paramount for improving the accuracy and reliability of debris flow hazard assessment. © 2021, The Author(s), under exclusive licence to Springer Nature B.V. part of Springer Nature. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169253
Appears in Collections: 气候变化与战略
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作者单位: Key Laboratory of Mountain Hazards and Earth Surface Process, Chinese Academy of Sciences, Chengdu, Sichuan 610041, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan 610041, China; Village and Town Construction Service Center of Longgang Town of Kaiyang County, Guiyang, Guizhou 550000, China; Department of Geology and Geological Engineering, Colorado School of Mines, Golden, CO, United States
Recommended Citation:
Nie Y.,Li X.,Zhou W.,et al. Dynamic hazard assessment of group-occurring debris flows based on a coupled model[J]. Natural Hazards,2021-01-01,106(3)